BMW 1 Series Reference Manual
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BMW 1 Series Reference Manual

BMW 1 Series Reference Manual

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R e f e r e n c e Ma n u a l
E 8 2 / E 8 8
C OMP L E T E V E H I C L E
T e c h n i c a l T r a i n i n g
T h e i n f o r ma t i o n c o n t a i n e d i n t h i s ma n u a l i s n o t t o b e r e s o l d , b a r t e r e d , c o p i e d o r t r a n s f e r r e d
w i t h o u t t h e e x p r e s s w r i t t e n c o n s e n t o f B MW o f N o r t h A me r i c a , L L C ( " B MW N A " ) .

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Summary of Contents for BMW 1 Series

  • Page 1 R e f e r e n c e Ma n u a l E 8 2 / E 8 8 C OMP L E T E V E H I C L E T e c h n i c a l T r a i n i n g T h e i n f o r ma t i o n c o n t a i n e d i n t h i s ma n u a l i s n o t t o b e r e s o l d , b a r t e r e d , c o p i e d o r t r a n s f e r r e d w i t h o u t t h e e x p r e s s w r i t t e n c o n s e n t o f B MW o f N o r t h A me r i c a , L L C ( "...

  • Page 2: Table Of Contents

    Table of Contents E82 Complete Vehicle Subject Page Introduction ..........3 Exterior Dimensions .
  • Page 3 Complete Vehicle Model: E82 Production: 3/2008 After completion of this module you will be able to: • Describe the similarities between the E82 and the E9X vehicles • Describe the construction of the body-shell of the E82 • Identify the features offered in the E82 E82 Complete Vehicle...

  • Page 4: Introduction

    Introduction Inspired by past 2002 models of the sixties and seventies BMW has designed a vehicle combining rear-wheel-drive, excellent handling and powerful engines with the stiffest and lightest bodyshell possible along with accommodations for four. The 1 Series Coupe is sure to pick up where the 2002 left off.

  • Page 5: Exterior Dimensions

    300 horsepower and an incredible 300 lb-ft of torque from as low as 1,400 rpm. Conforming to BMW’s Efficient Dynamics, these vehicles will include the following: • Light weight but rigid bodyshell. • Aluminum front axle with lightweight components like hollow anti-roll bars.

  • Page 6: Interior Dimensions

    Wheelbase 2660 Overhang front Overhang rear 1049 Track width front 1486 1500 1513 Track width rear 1532 (135i) Interior Dimensions 1357 1372 1398 1423 Note: A convertible version of the 1 Series, the E88, is also available. E82 Complete Vehicle...

  • Page 7: Body

    The front body work was inspired by the E9x design and re designed to complement the E82 styling. The doors were adopted from the European 1 Series. The luggage com- partment is somewhat shorter than that of the E92. The main differences are to be found in the side view and silhouette of the vehicles.

  • Page 8: Passive Safety

    Additionally, the underbody allows a defined flow of air to be directed to components subjected to greater thermal load with the use of spoiler edges and ram-air ducts. E82 Front Brake Cooling Passive Safety The basics for the E82’s bodyshell passive safety are: •...
  • Page 9 In the event of a strong frontal collision, optimum dissipation of forces is achieved by means of precisely calculated and tested load paths which absorb and distribute the force of impact onto several of the body components. The main focus is the development of an optimum balance between front-end deforma- tion and passenger compartment rigidity, minimizing the forces to the vehicle occupants.

  • Page 10: Bodyshell Construction

    Bodyshell Construction Index Explanation Index Explanation HC180BD, HC180YD, HX180BD H400T, HC400TD, HC420LAD DC01, DC04, DX54D, DX56D HC600C, HD680C HC220BD, HC220YD, HX220BD Plastics HC300BD, HC306LAD, HC300XD Other metal materials HC380LAD E82 Complete Vehicle...
  • Page 11 Bodyshell Components Index Explanation Index Explanation HC180BD, HC180YD, HX180BD H400T, HC400TD, HC420LAD DC01, DC04, DX54D, DX56D HC600C, HD680C HC220BD, HC220YD, HX220BD Plastics HC300BD, HC306LAD, HC300XD Other metal materials HC380LAD E82 Complete Vehicle...
  • Page 12 Bodyshell Components Index Explanation Index Explanation HC180BD, HC180YD, HX180BD H400T, HC400TD, HC420LAD DC01, DC04, DX54D, DX56D HC600C, HD680C HC220BD, HC220YD, HX220BD Plastics HC300BD, HC306LAD, HC300XD Other metal materials HC380LAD E82 Complete Vehicle...

  • Page 13: Undercar View Of Strut/Sill Concept

    Undercar View of Strut/sill Concept Index Explanation 1 Tension struts Layout of Components in Luggage Compartment Index Explanation Index Explanation CD changer Battery E82 Complete Vehicle...

  • Page 14: Bumpers

    Bumpers In contrast to the E90, the E82 has new bumper trims of different appearance. Energy is dissipated through carriers with deforming elements. • Fulfillment of Institute for Highway Safety (IIHS) low-speed frontal crash at 10 km/h (6 mph). • Fulfillment of Institute for Highway Safety (IIHS) low-speed side crash at 5 km/h (3 mph) @ a 15% offset.

  • Page 15: Chassis Dynamics

    The double pivot spring strut front axle design of the 3, 5, 7 and 8 Series vehicles will now be used on the 1 Series. With the exception of the 135i sport tuned version the front and rear suspensions are inspired by the E90 design.
  • Page 16 Double pivot spring strut front axle components Index Explanation Index Explanation Front Axle Carrier Tension Strut Wheel Hub Stabilizer Bar Stabilizer Link Swivel Bearing Control Arm Hydro-Mount Rack-and-Pinion Steering Spring Strut E82 Complete Vehicle...

  • Page 17: Rear Axle "Ha 5

    It is designed as a multi-link independent rear suspension axle with 5 different link arms. The designation "HA 5" does not refer to the five links but represents the consecutive development designation used at BMW. Rear Axle “HA 5” Components...
  • Page 18 Together with the double flexible mounting, this provides outstanding insulation against road noise and tire rolling noise. Note: For further information on the 1 Series front or rear suspension refer to the E90 reference material. E82 Complete Vehicle...
  • Page 19 The two upper links (blue in the illustration) E9X/E82 Rear Axle Adjustments (rear view of left rear) form a triangle in the top view as do the two lower links (purple in the illustration). The rear link (orange in the illustration) represents the toe rod.

  • Page 20: Dynamic Driving Systems

    The springs and dampers differ from those in the E90 in that they have been adapted to the E82’s vehicle weight. The front axle of the E82 is fitted with a hollow-type anti-roll bar for weight reduction and a sport tuned suspension is available as an option on the 128i (standard equipment on 135i).

  • Page 21: New Dsc Function

    New DSC Function At present only the BMW M models are equipped with a mechanical locking differential lock for obtaining optimum traction in extreme driving conditions. Power is sent to the wheel that grips High Traction DSC applies brake to the...
  • Page 22 The advantages of the new DSC program function over a mechanical limited slip differential are: • It is cost effective. • It does not add to the vehicle weight. • Improved fuel economy. • It activates only when required and if the DSC/DTC is switched off. •...

  • Page 23: Bus System Overview

    Bus System Overview E82 Complete Vehicle...

  • Page 24: Electrical System

    • The IHKA is derived from the E9X vehicles and shares its concepts with some differences. • CAS3 and SBX High are used. • As stated on the bus chart D-CAN is used as on all current BMW vehicles. E82 Complete Vehicle...
  • Page 25 Interface Box (SBX) High US version will receive a high variant of the interface box, (SBX High) containing the following functions: • Pairing of customer mobile phone to the vehicle via Bluetooth interface • Voice-activated control of the telephone or expanded voice-activated control in connection with the Assist/Bluetooth option •...

  • Page 26: Usb/Audio Interface

    Apple iTunes are to be played, the iPod must be connected by means of an adapter cable that simultaneously uses the jack socket and the USB. The adapter cable comes with the vehicle and is also available from BMW Parts Sales. Note: The USB Audio interface is located under the driver’s armrest on the E82.
  • Page 27 The Y cable is supplied with the vehicle and also may be ordered through BMW Parts Sales. A convenient media player holder is located under the arm rest.

  • Page 28: Special Features

    Special Features Special Features of the 135i The top model of the E82, the 135i, has the following special features pertaining to chassis and dynamic driving systems: • Xenon Adaptive Headlights with auto-leveling, and Cornering Lights are standard equipment. • Sports suspension is standard equipment. •...
  • Page 29 Table of Contents E88 Complete Vehicle Subject Page Introduction ..........5 Body .

  • Page 30: Subject Page

    Subject Page Service Information ..........45 Service Notes .
  • Page 31 Subject Page BLANK PAGE...
  • Page 32 Production: 3/2008 After completion of this module you will be able to: • Identify the different features of the E88 BMW 1 Series • Diagnose and service the E88 Convertible Top • Identify the components that make up the E88 Convertible Top •...

  • Page 33: Introduction

    BMW would build today in honor of such automotive legacy. With the 1 Series convertible, BMW succeeded in taking the typical sports coupe to the next level. To the already fun inspiring and performance oriented theme of the E82, designers added the free spirited look and feel that all past BMW convertibles models share.
  • Page 34 The 1 Series Convertible is a four-seater vehicle with a fully automatic fabric convertible top The 128i is powered by the N51B30M0 SULEV engine or the N52B30O1, 230 horse- power inline 6-cylinder 3.0-liter engine that generates 200 lb-ft of torque; the 128i will feature Valvetronic, VANOS and aluminum/magnesium block construction.

  • Page 35: Body

    Body Body Dimensions 1474 1507 1748 1934 2660 4360 Comparison of the E88 with the current E93 and E46/C: External dimensions (mm) E46/C Vehicle length 4360 4580 4,488 Overall vehicle width 1748 1782 1,757 Vehicle height, unladen 1411 1384 1,370 Wheelbase 2660 2760...

  • Page 36: Dimensional Variations Between The E88 And E93

    Dimensional Variations Between the E88 and E93 -100 -100 Index Explanation Index Explanation +7 mm @ Rear edge of the hood -100 mm Wheelbase +27 mm @ Vehicle height unladen -100 mm Rear overhang -20 mm Front overhang +27 mm @ Rear edge of the trunk Dimensional Variations Between the E88 and E46/C Index Explanation...

  • Page 37: Bodyshell

    Bodyshell Index Explanation Index Explanation DC04, DX54 HC420LAD HC180BD, HC180YD HC600C HC220BD, HC260LAD 22MnB5 HC300BD Plastics HC340LAD, HC380LA Other metal materials E88 Complete Vehicle...
  • Page 38 Index Explanation Index Explanation DC04, DX54 HC420LAD HC180BD, HC180YD HC600C HC220BD, HC260LAD 22MnB5 HC300BD Plastics HC340LAD, HC380LA Other metal materials E88 Complete Vehicle...
  • Page 39 The bodyshell is fully galvanized and composed of a variety of steel grades. High-tensile steels and specially designed bracing concepts ensure the bodyshell is extremely rigid and stable. Rigidity is increased with the use of a convertible-specific bracing package that reinforces the front section and trunk area in combination with a specially design sill/rocker beam component.
  • Page 40 Top view of front shock tower bracing (hood removed) E88 Complete Vehicle...

  • Page 41: Exterior Sill/Rocker Structure

    Exterior Sill/Rocker Structure The sill/rocker structure represents the principle load path from the front section to the rear. To provide rigidity against bending and torsion forces, a horizontal flange has been added between the inner and outer sill/rocker beam shell. The sill/rocker structure is addi- tionally reinforced with the incorporation of transverse reinforcing components.

  • Page 42: Partition Wall Module

    Partition Wall Module Additional bracing has been incorporated into the rear section, as in previous convert- ibles. The partition wall is designed as an assembly module which provides structure with only minimal vehicle weight gain. The main support is also transmitted through the parti- tion wall reinforcement struts, offering a weight bearing advantage.

  • Page 43: Strut Brace Concept

    Strut Brace Concept The underbody strut braces along with the sill/rocker beam structure secure the front and rear sections of the under body while reinforcing the lower rocker assemblies. The entire concept is designed to work together with the modular partition wall and the front strut bracing assembly to meet the E88’s requirements for structure rigidity and crash safety standards.

  • Page 44: Front Section Body Work

    Front Section Body work The the design of the E88 front body work meets the requirements for the US market while accommodating the current top of the line N54B30 engine (in the135is) within the established dimensions of the 1-Series body. The design front section features: •...

  • Page 45: Interior Features

    Interior Features Doors and Side Panels Index Explanation Index Explanation Frameless door Open storage compartment Tweeter Switch cluster Mid-range speaker Rubber inlay mat Shared Door Design for the E88/E82 The doors were adopted from the E82 Coupe. The inner door panels are designed with integrated storage areas and new door opening handle.

  • Page 46: Dashboard Module

    Dashboard Module Dashboard module features: • 2-piece driver’s footrest • The design and arrangement of the dashboard components (start/stop, light switch cluster, etc.) • Electric steering column lock (not on manual gearshift vehicles) • Steering column adjustment lever located to the side (out of the range of knee impact).

  • Page 47: Luggage Compartment

    Luggage Compartment The luggage compartment offers the customer versatility, while providing for convenient location and logical arrangement of the control modules. Volume/loading In order to provide the customer with the largest cargo room possible, a variable roof storage compartment has been incorporated, as on the E46/C. When the convertible roof is stowed the available cargo room is 260 liters, with the convertible top up the cargo room increases by 40 liters to a maximum of 300 liters;...

  • Page 48: Convertible Top

    Convertible Top The convertible top is 20 mm shorter and the top storage compartment is 20% smaller than on the E46/C. The use of a sound-absorbing material for the convertible top makes it possible to reduce noise levels in the vehicle and also compensates for aerodynamic disadvantages caused by the rounded shape of the top.
  • Page 49 Trunk Partition, raised (Left side view) Trunk Partition, lowered (Left side view) E88 Complete Vehicle...

  • Page 50: Top Opening And Closing Procedure

    Trunk Partition, lowered (View from luggage compartment) Top Opening and Closing Procedure Fully automatic opening and closing of the top takes 22 seconds (not counting windows operation time). Once the convertible top is fully closed, the side windows are actuated. Opening/closing –...

  • Page 51: Layout Of The Hydraulic Control Unit

    Layout of the Hydraulic Control Unit The hydraulic pump is located in the right side section of the trunk. The benefits of this location are: • Maximum distance between the pump and the driver for noise suppression. • Hydraulic lines are easily concealed by the luggage compartment trim. •...

  • Page 52: Top Storage Compartment Cover

    Top Storage Compartment Cover Notable features of the top storage compartment lid/cover are: • The top storage compartment lid is made from sheet metal. • There is a concealed trim panel on the top storage compartment lid. • The side trim panel overlaps with the metal panel to provide anti-trap function. •...

  • Page 53: System Components

    System Components Convertible Top The electrohydraulic convertible top can be opened and closed fully automatically. Opening or closing the convertible top takes approximately 22 seconds. If necessary it may also be activated when moving at low speeds (up to 40 km/h or 25mph). This involves moving the convertible top by means of a hydraulic cylinders.
  • Page 54 Convertible top position sensor component location Index Explanation Index Explanation Incremental sensor in the drive unit for the wind- Hall sensor, main pillar raised shield cowl locking system Hall sensor, windshield cow panel locked Hall sensor, main pillar stowed Hall sensor, roll bar stowed Switch for the trunk partition Hall sensor, roll bar raised or Hall sensor, Top storage...
  • Page 55 Incremental Sensor The incremental sensor #1 is integrated into the drive unit for the convertible top locking mechanism. The incremental sensor monitors the revolutions of the drive unit by monitor- ing motor position and the locking system linkage and the different states are identified, closed, intermediate and open positions.
  • Page 56 Hall Sensor #4 Measures the Roll Bar in its most vertical position referred to as “Clamping Bar Positioned” in the current diagnostic equipment software version. It is located right side bracket of top linkage/mechanism (mid bracket). Hall Sensor #5 Measures the position of the top extending piston actuator which is labeled as “Roll Bar Unclamped”...
  • Page 57 Hall Sensor #7 Signals “Main Pillar Stowed” and is located on the rear of the right side bracket of top linkage/mechanism (upper most sensor). Hall Sensor #6 Signals “Main Pillar Position” and is located on the rear of the right side bracket of top link- age/mechanism (lower most sensor).
  • Page 58 Hall Sensor #9 Signals “Convertible Top Compartment Lid Opened” and is located on the rear of the left top lid hinge bracket shown here. Hall Sensor #10 Signals when the “Convertible Top Compartment Lid Locked” and is located on the front of the left hinge behind the top lid locking mechanism.
  • Page 59 Trunk Partition Microswitch #8 This microswitch #8 ensures that the trunk partition has been lowered. With the trunk partition lowered, the microswitch is connected to ground. If this condition is not fulfilled, the convertible top does not open (disabling condition). Located on the left side trunk partition catch.

  • Page 60: Convertible Top Module (Cvm)

    Convertible Top Module (CVM) The convertible top module (CVM) controls all the electrical and hydraulic functions of the convertible top. The convertible top module is connected to the K-CAN. The convertible top module is fitted to the partition wall module. Under certain inhibition conditions, the CVM will not activate the convertible top (see system functions, prerequi- sites for opening and closing the top).

  • Page 61: Controls For Operation

    Controls for Operation The center console switch cluster has 2 buttons for operating the convertible top (Open convertible top and Close convertible top). The center console switch cluster (SZM) is connected to the heating/air conditioning controls module. Above the two buttons there are a red and a green function LEDs. These LEDs are con- trolled by the convertible top module (CVM) via the K-CAN.

  • Page 62: Convertible Top Hydraulic Circuit Components

    Convertible Top Hydraulic Circuit Components The convertible top hydraulic control unit consists of the electric motor with hydraulic pump, fluid reservoir, valve block and relays. The hydraulic control unit powers all the movements of the convertible top using 3 cylinder pairs. Each cylinder pair controls either: •...

  • Page 63: Electrical Hydraulic Control Unit

    Electrical Hydraulic Control Unit The direction of movement of the con- vertible top (OPEN or CLOSE) is con- trolled by 2 relays. The cylinders are supplied with oil by a hydraulic pump with 3 valves and with 2 directions of flow. A change in direction by the hydraulic pump determines the direction of movement of the pistons/ rams.
  • Page 64 The hydraulic pump is only operational while the convertible top is in motion. Should the pump fail, emergency operation will be necessary. The hydraulic control unit is installed in the right side of the luggage compartment. It has been placed in the furthest point possible from the driver in order to minimize the sound being transmitted into the passenger compartment by the pump during operation.

  • Page 65: Windshield Cowl Locking System

    Windshield Cowl Locking System A geared electric motor locks and unlocks the convertible top to and from the windshield cowl on the top of the windshield frame. The convertible top module (CVM) actuates the drive unit. The drive unit is located in the center of the cowl locking system. The right and left side catches are moved via a disc and 2 thrust rods.
  • Page 66 The CVM is supplied via terminal 15 of the Car Access System (CAS). If, for example, the junction box power supply is interrupted, sufficient communication is still possible with the BMW diagnostic system. • Car Access System (CAS) The CAS stores the power window position or status and makes that information avail- able to the CVM control module.
  • Page 67 Convertible top system circuit diagram E88 Complete Vehicle...
  • Page 68 Convertible top system circuit diagram legend Index Explanation Index Explanation Car Access System (CAS) Switch for the trunk partition Hall sensor, convertible top storage Footwell module (FRM) compartment lid open Instrument cluster (KOMBI) Hall sensor, windshield cowl locked Center console switch cluster (SZM) Hall sensor, roll bar unclamped IHKA control module Hall sensor, roll bar positioned/raised...

  • Page 69: System Functions

    System Functions The system functions for the automatic convertible top are: • Opening and closing the convertible top • Comfort operation • Check Control messages Prerequisites for Opening and Closing the Top In order to open and close the convertible top, the following conditions must be fulfilled: •...

  • Page 70: Top Opening Sequence

    Top Opening Sequence Automatic top opening proceeds as follows: • Side windows are opened (if closed or in an intermediate position) • Convertible top is unlocked from the windshield cowl • Rear-window heater is switched off (via the junction box electronics) •...

  • Page 71: Check Control Messages

    Check Control Messages Under certain circumstances it may not possible to open or close the convertible top. The appropriate Check Control messages will be displayed in the instrument cluster. On vehicles with a Central Information Display (CID), a text-based message and accom- panying instructions are displayed.
  • Page 72 - Automatic locking interrupted. See the Owner's Convertible top not locked Manual for how to lock the convertible top. - Have the problem checked by your BMW Service. - Convertible top control failure - Convertible top position and locking status cannot be detected.

  • Page 73: Service Information

    Service Information Service Notes Consider the following helpful hints when servicing the E88 top: • The rear power windows do not have an anti-trap mechanism. There is no one- touch control function for closing the rear windows. • No comfort closing from the outside door handle electronics. On vehicles with Comfort Access, comfort closing cannot be activated from the outside door handle electronics.

  • Page 74: Encoding/Programming Notes

    Encoding/Programming Notes After replacement, the convertible top module (CVM) must be re-encoded. Window Adjustments The windows on the E88 don’t have to be initialized, but they do need to be adjusted to the body to prevent rattles, wind noises and vibrations as well as water leaks. Note: Special tools are needed to perform the window adjustment procedure.
  • Page 75 Convertible top open and stored in the luggage compartment Sensor State Hall sensor, main pillar positioned Hall sensor, main pillar stowed Hall sensor, roll bar unclamped Hall sensor, clamping bar in position (roll bar raised) Hall sensor, roll bar stowed Hall sensor, windnield cowl panel closed Incremental sensor, windnield cowl locking system motor position Lock opened...
  • Page 76 Roof storage compartment lid open Sensor State Hall sensor, main pillar positioned Hall sensor, main pillar stowed Hall sensor, roll bar unclamped Hall sensor, clamping bar in position (roll bar raised) Hall sensor, roll bar stowed Hall sensor, windnield cowl panel closed Incremental sensor, windnield cowl locking system motor position Lock opened Hall sensor, convertible top storage compartment lid locked...
  • Page 77 Convertible top intermediate position and top storage compartment lid open Sensor State Hall sensor, main pillar positioned Hall sensor, main pillar stowed Hall sensor, roll bar unclamped Hall sensor, clamping bar in position (roll bar raised) Hall sensor, roll bar stowed Hall sensor, windnield cowl panel closed Incremental sensor, windnield cowl locking system motor position Lock opened...
  • Page 78 Convertible roof intermediate position and roof storage compartment lid closed Sensor State Hall sensor, main pillar positioned Hall sensor, main pillar stowed Hall sensor, roll bar unclamped Hall sensor, clamping bar in position (roll bar raised) Hall sensor, roll bar stowed Hall sensor, windnield cowl panel closed Incremental sensor, windnield cowl locking system motor position Lock opened...
  • Page 79 Convertible roof closed Sensor State Hall sensor, main pillar positioned Hall sensor, main pillar stowed Hall sensor, roll bar unclamped Hall sensor, clamping bar in position (roll bar raised) Hall sensor, roll bar stowed Hall sensor, windnield cowl panel closed Incremental sensor, windnield cowl locking system motor position Lock closed Hall sensor, convertible top storage compartment lid locked...
  • Page 80 Hall sensor installation locations Index Explanation Index Explanation Hall sensors roll bar stowed Hall sensors main pillar positioned (raised) Hall sensors roll bar positioned (raised) Hall sensors main pillar stowed E88 Complete Vehicle...

  • Page 81: Emergency Operation

    Emergency Operation To activate the convertible top in an emergency, the following tools are required: • Allen key • Thin slotted screwdriver These tools can be found in the tool kit located in the luggage compartment of the vehicle. Closing the top in an emergency must be performed by CAUTION!!! two people.
  • Page 82 3. Pull the pull left and right knobs towards the rear of the vehicle until resistance is detected (as illustrated to the left). Note: The convertible top storage compartment lid is fully unlocked and it can now be manually lifted. 4.
  • Page 83 Before lifting the convertible top, make a visual CAUTION!!! inspection to ensure that the locking pin is not incor- rectly positioned, either on the left or right-hand side. (Only the left side locking pin is visible in the image) If one or both locking pins are incorrectly positioned, proceed as follows: 1.
  • Page 84 To manually close the convertible top: 1. With the help of a second person, reach under the top edge in the area indicated (on the left and right-hand side). 2. Lift the convertible top up and out of the top storage compartment. E88 Complete Vehicle...
  • Page 85 3. Open the convertible top as far as the position illustrated. 4. Lift the roll bar into an upright position. Once raised, the roll bar must be held at all times, as it CAUTION!!! could otherwise fall on its own and may cause injury. E88 Complete Vehicle...
  • Page 86 CAUTION!!! storage compartment lid is no longer locked. Seek the assistance of a BMW Center as soon as possible. 3. Press the edge of the top onto the fastener until it is lying flush. This automatically pulls the roll bar onto the top storage compartment lid.
  • Page 87 To lock the convertible top to the edge of the windshield cowl: 1. Sit in one of the two front seats. 2. Pry the access cover flap for the locking screw out of the top edge trim using the small flat screwdriver. 3.
  • Page 88 4. Turn the Allen bolt counterclockwise. This pulls the convertible top downward and locks it in place. If necessary, pull the convertible top downward while gently sup- porting it as to guide the locking mechanisms in place. 5. Snap the plastic access cover back into place. 6.

  • Page 89: Rollover Protection System

    The design and function of the Rollover Protection System (ROC) is similar to the E93. The ROC used in the 1 Series has been enhanced with the following features: • Ski bag option with 380 mm through loading opening will accommodate 2 snowboards or 2 golf bags •...
  • Page 90 Partition wall module Note: The mechanism of the rollover protection system may only be removed and fitted as a complete unit, as its part of the partition wall module. Individual mechanical components of the system may not be replaced separately. E88 Complete Vehicle...

  • Page 91: Bus System Overview

    The longitudinal dynamics management (LDM) and Active Cruise Control (ACC) functions are not offered in the E88. Note: As on all current new BMW models D-CAN is incorporated to the bus system instead of D-bus to enhance communication on this line and comply with OBD regulations.
  • Page 92 E88 Bus System Overview E88 Complete Vehicle...
  • Page 93 Index Explanation Index Explanation KOMBI Active steering system Instrument cluster Outside mirror Steering angle sensor ACSM Comfort access Advanced crash and safety management Car access system Seat occupancy detection mat Car communication computer Park distance control CD changer Quality, level,temp, oil sensor Central information display Radio 2 Controller...
  • Page 94 Terminal Status of the E88 (US variant) E88 Complete Vehicle...

  • Page 95: General Vehicle Electrical System

    General Vehicle Electrical System Because the vehicle systems network in the E88 is the same as that in the E93, only new features and differences will be described here. For detailed information on the vehicles systems network , refer to ST701 training material. Central Locking System In contrast to the E93, in the E88 the glove compartment and the storage compartment in the center console are not locked/unlocked automatically.
  • Page 96 E88 Convertible anti-theft alarm system K-CAN DWA-Bus SINE E88 Complete Vehicle...
  • Page 97 Index Explanation Index Explanation Hood contact switch trunk-lid contact switch Car Access System Luggage compartment light Interior rear-view mirror with remote Rear microwave sensor control receiver and DWA LED Junction box Microwave sensor, front left Passenger's door contact Footwell module Microwave sensor, front right Driver's door contact Siren with tilt alarm sensor...
  • Page 98 NOTES PAGE E88 Complete Vehicle...

  • Page 99: Audio And Communication Systems

    Audio and Communication Systems USB/audio Interface The USB/audio interface is available as an option. This interface can be used to connect external audio devices and stor- age media into the vehicle entertain- ment system via a USB interface. If the vehicle is equipped with a center armrest, the external player can be stored in a special pocket on the under- side of the armrest, where it is...

  • Page 100: Am/Fm Antennas

    AM/FM Antennas Three FM antennas (FM1, FM2, FM3) and one AM antenna are switched via an FM diversity module and are used for radio reception in the E88. The AM and FM1 antennas are integrated into the mast antenna. The FM2 and FM3 antennas are located under the rear bumper trim.

  • Page 101: Antennas For Digital Receivers

    Antennas for Digital Receivers Satellite Digital Audio Radio Services (SDARS) antenna on trunk lid (View from the rear of the vehicle) View from under trunk lid. Index Explanation SDARS antenna Note: The terrestrial In Band On Channel (IBOC) uses the FM antennas for digital reception.

  • Page 102: Antennas For Telephone And Telematics

    Telematics Antenna The telematics antenna is located on the rear bumper under the left tail light. On vehicles equipped with the BMW Assist option, the telematics antenna is connect- ed directly to the telematics control unit TCU and is used solely for data transmis- sion relating to telematics functions.

  • Page 103: Sos Antenna

    MOST. The GPS antenna is connected directly to the TCU on vehicles with no navigation sys- tem but with BMW radio 2 and telematics functions. In this case, the TCU determines the location. The GPS antenna is located on Index...

  • Page 104: E88 Antenna Circuit Diagram

    E88 Antenna Circuit Diagram K-CAN K-CAN RAD2 MOST IBOC SDARS SDARS GSM 2 E88 Complete Vehicle...
  • Page 105 E88 Antenna Circuit Diagram Legend Index Explanation Index Explanation Head unit ( RAD2, CCC) FM3 antenna Car Access System Telematic Control Unit (TCU) Mast antenna (telephone antenna, AM antenna Remote control receiver in rear-view mirror and FM1 antenna) Junction box FM antenna diversity module Comfort access IBOC receiver (digital radio tuner)
  • Page 106 Top cut away view of components located in the luggage compartment Index Explanation Index Explanation Top-HiFi amplifier Japan navigation system SDARS On-board tool kit Telematics control CD changer unit TCU with BMW Assist Battery Hi-Fi amplifier Removable towing hitch (Not for US) IBOC E88 Complete Vehicle...

  • Page 107: Passive Safety Systems

    Passive Safety Systems Advanced Crash and Safety Management The E88 is equipped with the second generation advanced crash and safety manage- ment system (ACSM2) as featured in the E93. The system is enhanced with the following components: • Seat position sensor, driver seat and front passenger seat •...

  • Page 108: E88 Passive Safety System Circuit Diagram

    E88 Passive Safety System Circuit Diagram Kl. R CAS3 K-CAN ACSM Kl. R K-Bus E88 Complete Vehicle...
  • Page 109 E88 Passive Safety System Circuit Diagram Legend Index Explanation Index Explanation Up-front sensor, left B-pillar satellite, right Driver airbag Battery Front passenger airbag Safety battery terminal Up-front sensor, right Right-hand roll bar actuator Junction box Rollover protection controller Knee airbag, passenger's side Left-hand roll bar actuator Car access system 3 B-pillar satellite, left...

  • Page 110: Front Seats Air Bags

    Front Seats Air Bags The front seats in the E88 do not have an integrated seat belt system. The automatic seat belt tensioner is secured to the bodyshell. The front seats each house a side head- level airbag. These seat airbags when deployed are much taller and are used in the con- vertible because of the absence of curtain airbags.
  • Page 111 Seat position sensor in the driver's seat Index Explanation Index Explanation Seat position sensor Permanent magnet The system adapts the triggering of the two airbags to the driver's and front passenger's seat position. Due to US legal requirements, the driver's seat and front passenger seat must be able to detect the size of the occupant.

  • Page 112: Retraction Tensioner And Adaptive Belt-Load Limiter

    Retraction Tensioner and Adaptive Belt-load Limiter The automatic seat belt tensioner is enhanced with the addition of two extra functions: • Retraction tensioner Automatic seat belt tensioner • Adaptive belt-load limiter. Index Explanation Seat belt Automatic seat belt tensioner Pyrotechnic actuator for the adaptive belt-load limiter Pyrotechnic actuator for the retraction tensioner...
  • Page 113 Retraction Tensioner As with the seat belt tensioner, the role of the pyrotechnic retraction tensioner is to mini- mize any looseness of the belt in the pelvis and shoulder areas in the event of impact. The pyrotechnic retraction tensioner is located in the driver and front passenger automat- ic seat belt tensioner.
  • Page 114 NOTES PAGE E88 Complete Vehicle...

  • Page 115: Component Location

    Component Location The control modules in the luggage compartment are located so as to avoid the need for different luggage compartment trim, wherever possible. The hydraulic control unit is located in the right side panel of the luggage compartment floor. This reduces the loss of useable cargo room and minimizes noise inside the vehi- cle.
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This manual is also suitable for:

E82E88

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