Audi Q7 361 Service
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Audi Q7 361 Service

Self-study programme 361
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Self-study programme 361

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  • Page 1 Service Training Audi Q7 Self-study programme 361...
  • Page 2 The Audi Q7 In superior fashion, the Audi Q7 combines The very design of the Audi Q7 sets new standards. sportiness and versatility, advanced technology and Characteristic of the typical Audi dynamism are the premium-class luxury. swooping curve of the roofline and the distinctive...

  • Page 3: Table Of Contents

    Contents Introduction ........4 Body .

  • Page 4: Introduction

    Introduction In a nutshell Some Audi Q7 dimensions. 361_045 361_046 5-seater 6/7-seater Admissible total weight in kg 4.2l FSI 2895 3065 3.0l TDI 2950 3120 Unladen weight without driver in kg 4.2l FSI 2240 2270 3.0l TDI 2295 2325 Drag coefficient Cw 0.37...
  • Page 5 Interior dimensions 361_103 Luggage compartment volume 775 l 330 l 361_105 361_104 2035 l 361_106...
  • Page 6 Introduction Body The body of the Audi Q7 has been newly developed by Audi and is not based on a predecessor SUV model. During the development process, the most significant properties and characteristic values were initially defined. For example: body weight ●...
  • Page 7 (seamless joints between roof employed on the Audi Q7: and side frame) amounts to 4420 mm. As with the Audi A3 Sportback and the Audi A6 Avant '05, the – Spot welding side panel and the rain channel are joined using –...

  • Page 8: Body

    Body Materials In addition to the joining techniques employed, The sill tube consists of a rolled section because the selection of the correct materials is vital for manufacturing tolerances are lower in this case achieving both crash safety and body rigidity. than for an extruded tube, enabling smaller wall Depending on loading and weight, the most thicknesses.
  • Page 9 Standard steels High strength steels Higher-strength and super high-strength steels Aluminium 361_056...
  • Page 10 Where the Audi Q7 is equipped with a third seat row, the second seat row features an easy-entry function and longitudinal seat adjustment. In the 6-seater equipment version, comfort seats are optionally available for the second seat row.
  • Page 11 The head restraints of the second seat row do not prevent the backrests from folding. When the head restraints of the second seat row are lowered, the backrests do not fully reach the load floor position. When folding down the backrests of the third seat row, the head restraints lower automatically, making it easier to fold down the backrests.

  • Page 12: Passenger Protection

    Owing to its wide range of use, the Audi Q7 represented a special challenge for the development team: A high degree of passenger protection during both on-road and off-road operation. In meeting these requirements, the Audi Q7 fits seamlessly into the high safety level of the current Audi model range.
  • Page 13 361_001 G283 Front airbag crash sensor for driver side Driver side airbag igniter (front end, left) N250 Driver side airbag igniter 2 G284 Front airbag crash sensor for front passenger N131 Front passenger side airbag igniter 1 side (front end, right) N132 Front passenger side airbag igniter 2 N153 Driver seat belt tensioner igniter 1 J234 Airbag control unit...

  • Page 14: Airbag Control Unit J234

    Passenger protection Airbag control unit J234 The purpose of the electronics integrated in the airbag control unit is to detect vehicle deceleration or acceleration and to evaluate it so as to detect a vehicle impact. In order to detect vehicle deceleration or acceleration during an impact, external sensors are used in addition to the sensors installed inside the control unit.
  • Page 15 Data exchange The airbag control unit is connected to the drive CAN. The airbag control unit transmits the following information via the drive CAN: – Activation of warning lamp K75 – Activation of seat belt warning system – Diagnostic data –...

  • Page 16: Seat Belt Warning System

    Passenger protection Seat belt warning system The Audi Q7, like the Audi A6 ´05 for example, features a seat belt warning function for the driver and front passenger. When the ignition is switched on, the airbag control unit evaluates the information from the driver and front passenger belt buckle switches as well as information from the front passenger side seat occupied sensor.
  • Page 17 Seat occupied sensor, front passenger side G128 The front passenger side seat occupied sensor consists of a plastic film incorporating several individual pressure sensors. The front passenger side seat occupied sensor is located in the front passenger seat, between the seat cover and padding.
  • Page 18 Passenger protection Belt switch Driver side belt switch E24 Front passenger side belt switch E25 (In the driver and front passenger side belt buckles) Information as to whether or not the driver and front passenger have fastened their seat belts is required by the "seat belt warning system"...
  • Page 19 Driver seat belt tensioner igniter 1 - N153 Front passenger seat belt tensioner igniter 1 - N154 The front seats of the Audi Q7 is equipped with the proven compact tensioners. The belt tensioners work according to the "ball gear" principle (not USA) and are triggered electrically by the airbag control unit.
  • Page 20 Passenger protection Airbag The front airbags on the driver and front passenger sides are equipped with two-stage gas generators. Depending on the nature and severity of the accident, the airbag control unit sets a time delay between the two ignitions (from approx. 5ms to 30 ms). The loads which the driver and front passenger are exposed to during a crash can be reduced by means of a delayed ignition of the propellant charges.
  • Page 21 Driver side airbag igniter I - N95 The electrical igniter I, which is activated by the airbag control unit, ignites the priming charge I. This ignites the actual propellant charge I via the bores. When the gas pressure generated through combustion of the propellant charge I exceeds a specified threshold, the housing of the gas generator becomes deformed, opening up a passage to the airbag via the metal filter.

  • Page 22: Front Passenger Airbag

    Passenger protection Front passenger airbag N131 Front passenger side airbag igniter I N132 Front passenger side airbag igniter II The front passenger airbag module housing is made of plastic. 361_008 A two-stage hybrid gas generator is used on the passenger side. Two pyrotechnic propellant charges are contained in a compressed gas cylinder, which is activated separately by the airbag control unit.
  • Page 23 Front passenger side airbag igniter I - N131 The airbag control unit energizes the igniter I and the priming charge I is ignited. This in turn ignites the actual propellant charge I. The combustion gas generated increases the pressure in the compressed gas cylinder until the burst disc breaks at a predetermined pressure value.

  • Page 24: Side Airbags

    However, they have been adapted to the passenger compartment concept of the Audi Q7. For the first time, so-called "soft-cover modules" have been used for the side airbags on the second seat row. With these modules, the usual plastic casing has been replaced by a fabric cover.
  • Page 25 Side airbag igniter on driver side N199 Side airbag igniter on front passenger side N200 The relevant side airbag igniters are energised by the airbag control unit. The priming charge then ignites the propellant charge. The combustion gas generated flows through the metal filter into the airbag. The airbag is deployed.

  • Page 26: Curtain Airbag

    Passenger protection Curtain airbag (sideguard) Driver side curtain airbag igniter N251 Front passenger side curtain airbag igniter N252 In order to better protect occupants in the event of a side impact, the curtain airbag covers virtually the complete side window area from the A to the D-pillar.
  • Page 27 Diagnostic monitoring is performed by the airbag control unit J234. 361_033 In the Audi Q7, the battery isolation igniter N253 is installed in an electrics box beneath the front left seat. Battery isolation igniter Battery isolation igniter activated...
  • Page 28 Supplementary passenger protection system features for the North American market In order to meet the statutory and market-specific requirements for the US market, the Audi Q7 is equipped with a special seat occupied sensor for the front passenger seat and a roll-over detection system.
  • Page 29 Seat occupied recognition control unit J706 The seat occupied recognition control unit J706 evaluates the signals from the pressure sensor for seat occupied recognition G452 and seat belt force sensors for seat occupied recognition G453. The signal from the seat belt force sensor for seat occupied detection provides information on how high the tension force is on the seat belt.
  • Page 30 Passenger protection Seat belt force sensor for seat occupied recognition G453 The seat belt force sensor for seat occupied The distance between the Hall sensor and magnets I recognition is integrated in the front passenger seat and II changes. The action of the magnets on the belt buckle.
  • Page 31 Belt switch Driver side belt switch E24 Front passenger side belt switch E25 The belt switches (reed switches) are installed in the The magnet I is located at the tip of the moveable belt buckles of the front seats. As long as the latch spring thorn.
  • Page 32 Passenger protection Pressure sensor for seat occupied recognition G452 The pressure sensor for seat occupied recognition G452 and the seat occupied sensor mat are integrated in a single component. The seat occupied sensor mat is filled with a silicone-like gel and is located under the seat padding of the front passenger seat.
  • Page 33 Driver seat belt tensioner igniter 1 - N153 Front passenger seat belt tensioner igniter 1 - N154 In the Audi Q7 for the North American market, belt Initial position reels with newly-developed belt tensioners, so- called rack-and-pinion belt tensioners, are used for Damping element the driver and front passenger.

  • Page 34: Engine

    Engine Engine/gearbox combinations For the market introduction of the Audi Q7, only the 3.0l V6 TDI and the 4.2l V8 FSI engines will be available in conjunction with the (09D) 6A 6-speed automatic gearbox. Note For the design and function of the...

  • Page 35: Technical Features

    4.2l V8 FSI The engine number is located in the inner V of the engine block at the left cylinder head. Technical features – Chain drive on the power take-off side – Selective FSI petrol direct injection – Individual pencil ignition coils –...
  • Page 36 Engine 3.0l V6 TDI Common Rail Technical features – Chain drive on the power take-off side – Common rail injection system with 1600 bar injection pressure – 8-hole piezo injectors – Turbocharger with variable turbine geometry – Steel glow plugs –...
  • Page 37 3.0l V6 TDI modifications Lateral inclination The oil supply in the engine must be ensured during extreme off-road situations. For this reason, in the case of the Q7, the oil sump and oil suction pipe have been designed and modified so that sufficient oil can be supplied to the pump even in the case of extreme lateral inclination of the vehicle.
  • Page 38 Engine 4.2l V8 FSI Crankcase With a length of 430 mm and a width of 520 mm, the 90° V cylinder crankcase is very compact. The bore diameter is of 84.5 mm and the distance between cylinders is 90 mm. Cylinder liners have been dispensed with in order to achieve a wall thickness of 5.5 mm between the cylinders.

  • Page 39: Oil Circuit

    Oil circuit The oil supply is based on a classic wet-sump concept. It has been possible to reduce the delivery rate of the oil pump through optimisation of the crankshaft bearings. For this reason, the oil remains in the sump for longer, improving degassing.

  • Page 40: Fuel System

    Engine Fuel system Two demand-controlled single-plunger high-pressure pumps are used in the fuel system, which are driven by a double cam on each of the inlet camshafts. In comparison with a constant delivery pump, the drive power is reduced depending on the rail pressure. The operating pressure is between 30 and 100 bar.

  • Page 41: Fuel Tank

    Fuel tank In terms of the tank bladder, the fuel tank is the same component for petrol and diesel engines. Its useful volume is approx.103 l. The main differences are to be found in the fuel tank breather system and the inside of the fuel tank.

  • Page 42: Petrol Engine

    Engine Petrol engine Here, a fuel delivery unit is fitted in the fuel tank. It is located in the right main chamber. In order to also deliver fuel from the left chamber, the delivery unit drives two suction jet pumps, which pump the fuel into the delivery unit.

  • Page 43: Exhaust System

    Exhaust system 4.2l V8 FSI engine The complete exhaust system from the cylinder heads to the tailpipes is designed as a dual-branch system. Air gap insulated manifolds in the clamp flange technique are bolted onto the cylinder heads. These optimize flow characteristics, ensuring quick heating of the catalytic converters.

  • Page 44: Running Gear

    Running gear Overview The running gear also excels through its all-rounder qualities. Steel-spring suspension and twin tube shock absorbers are set up for sporty driving properties and high comfort, even during off-road use. The optionally available adaptive air suspension with an electronically controlled damper system represents the perfect synthesis of decidedly sporty handling characteristics and the highest ride comfort.

  • Page 45: Rear Axle

    Rear axle A double wishbone axle with split upper wishbones is used. The design principle has been adopted from the VW Touareg. The mounting bracket, wheel bearings and wishbones are identical components. The increased track width, which has been extended by 14 mm, is achieved by means of a modified wheel carrier.
  • Page 46 The operating principle is the same as that of the sensors already used in the Audi A8 ´03. In the Audi Q7, the familiar dual sensor is used for detecting lateral acceleration, yaw velocity and longitudinal acceleration. The sensor is installed in the front passenger footwell.
  • Page 47 ESP on-road control Optimum stability Control is speed dependent ESP off-road control Optimum traction Road speed (km/h) 362_057 Some new functions are implemented with the new ESP. The "off-road" mode is particularly worthy of mention. The basic function of this mode is to optimise the ESP/ASR/EDS and ABS interventions with respect to traction and braking on loose surfaces (off-road).

  • Page 48: Steering System

    A mechanically-adjustable steering column is available as basic equipment. The plate-clamp system is the same as on the steering columns of the Audi 8 and Audi A6 ´05 (see SSP 285). The steering columns for the Audi Q7 are also equipped with an electric steering column lock.

  • Page 49: Wheels And Tyres

    6- cylinder) 362_035 Tyre pressure monitoring system A tyre pressure monitoring system is optionally available for the Audi Q7. Its design and operating principle are the same as those of the Audi A6 ´05 (see SSP 324). 361_127...

  • Page 50: Electrical System

    Electrical system Installation overview of control units Note For more information on the electrical system, please refer to the self-study programme SSP 364 Audi Q7 – Electrics. 364_004 1 Garage door operation control unit J530 2 Adaptive cruise control unit J492...
  • Page 51 364_005 20 Rear lid control unit J605 21 Rear lid control unit 2 - J756 22 Reversing camera system control unit J772 23 Convenience system central control unit J773 24 Convenience system central control unit J393 25 Auxiliary heater control unit J364 26 Aerial reader unit for keyless entry system J723 27 Parking aid control unit J446 28 Trailer detector control unit J345...
  • Page 52 Electrical system Networking Side assist control unit 2 J770 Side assist Adaptive cruise Control unit in dash control unit control panel insert J769 J428 J285 Data bus diagnostic interface J533 Engine Parking aid control unit J446 J623 Driver door Energy Engine control unit management...
  • Page 53 Mobile phone operating electronics J412 Telephone Telephone handset transmitter and Front information receiver unit display and operating unit J523 Navigation system with CD drive J401 TV tuner Radio Language input J507 Media player in position 1 R118 MOST bus Digital sound packet J525 Digital radio...

  • Page 54: Air Conditioning System

    Air conditioning system Overview The new Audi Q7 is equipped with an air conditioning system as standard. Three different air conditioners are available: Air conditioner (basic) Deluxe automatic air conditioner Four-zone deluxe automatic air conditioner 361_069 361_071 361_118 The systems can be identified by means of the different air conditioner operating units.
  • Page 55 Refrigerant circuit General The refrigerant circuits of the three systems are identical to those in the VW Touareg. The air conditioner units are supplied by a common compressor. In four-zone systems, the rear air conditioner unit additionally features a heat exchanger and an evaporator. The systems are equipped with a dust and pollen filter in the front air conditioner unit.

  • Page 56: Air Conditioning

    Air conditioning Refrigerant circuit of the four-zone deluxe automatic air conditioner The two evaporators of the four-zone air conditioner are integrated in parallel into the refrigerant circuit. They are both supplied by a single externally-controlled compressor. In the case of a V6 TDI engine, the compressor is driven via a muli-V belt and in the case of a V8 FSI engine, via a drive shaft.
  • Page 57 Front air conditioner unit The front air conditioner unit is the same in design and function as that of the VW Touareg. However, additional control motors have been fitted. All three air conditioners are air-controlled systems. Control motors on support plates Dust and pollen filter 361_084 Heat exchanger...
  • Page 58 Air conditioning The table shows the number and designations of the various control motors for the three air conditioner versions. In the basic air conditioner version, the control motors perform various functions: Automatic air conditioners Control motors Air conditioner (basic) 2-zone and 4-zone 4-zone automatic air automatic air...
  • Page 59 Rear air conditioner unit The rear air conditioner unit is located under the side trim at the left of the luggage compartment. The blower motor draws in the air to be cooled directly from the passenger compartment. During auxiliary heater and residual heat operation, the rear air conditioner unit remains switched off. Blower motor Rear heat exchanger 361_070...
  • Page 60 361_068 Deluxe automatic air conditioner The controls of the deluxe automatic air conditioner are the same as those in the Audi A6 ’05. The air conditioner control unit software has been adapted to the passenger compartment dimensions of the Audi Q7.
  • Page 61 The rear Climatronic operating and display unit E265 beneath the rear vent in the centre console is the same as the one in the Audi A8 ´03. All the familiar functions are identical. In the Audi Q7, the rear air conditioner unit is used for the rear passenger compartment in the case of the four-zone automatic air conditioner.

  • Page 62: Air Distribution

    Air conditioning Air distribution In the front passenger compartment, air distribution is the same for the basic air conditioner and the deluxe automatic air conditioner; the differences lie in the design of the air conditioner units and the flap control of the two versions.
  • Page 63 Residual heat function The residual heat function is only available with the two automatic air conditioning systems. Following activation, the residual heat function operates for a maximum of 30 minutes. Activation is performed via the ON/OFF button, which must be pressed for longer than 1 second with the ignition in the OFF position. Activation can be performed either from the rear Climatronic operating and display unit J265, or from the Climatronic control unit J255.
  • Page 64 Sensors and actuators High-pressure sender G65 In the Audi Q7, the high pressure sender generates a pressure-dependent pulse width modulation signal. The high pressure sender G65 is not connected to the LIN bus in this model. Possible fault memory entries include: –...
  • Page 65 Ambient temperature sensor For evaluation of the ambient temperature, two sensors are used in the deluxe automatic air conditioner and the four-zone deluxe automatic air conditioner. Ambient temperature sensor G17 The measured value from the ambient temperature sensor G17 is evaluated by the control unit J285 in the dash panel insert and transmitted to the Climatronic control unit J255 via the convenience CAN data bus.
  • Page 66 Air conditioning Fresh air blower control unit J126 The fresh air blower control unit J126 controls the blower speed in the deluxe automatic air conditioner and the four-zone deluxe automatic air conditioner. In the manual system, a series resistor is installed in its place.
  • Page 67 Networking The Climatronic control unit J255 is connected to the convenience CAN bus, It is the master control unit for the distributed functions of the heated rear window, the optional heated seats, the additional heater in the case of diesel engines, as well as the optional, factory-installed auxiliary heater. The Climatronic control unit J255 does not control any modules connected to the LIN bus.

  • Page 68: Infotainment

    Infotainment Overview of Audi Q7 infotainment systems MMI basic MMI basic plus Standard equipment Display Monochrome 6.5" screen Monochrome 6.5" screen Operating unit 4-button operating unit 4-button operating unit Display and operating unit In conjunction with CD changer under the...
  • Page 69 MMI basic plus with CD navigation Monochrome 6.5" screen 7" colour screen 8-button operating unit 8-button operating unit Under the centre armrest In the dash panel behind the glove – incl. radio module compartment – incl. navigation module – incl. single-CD drive for navigation system or audio CD 7-channel DSP sound system with 180 W 7-channel DSP sound system with 180 W...
  • Page 70 DSP sound system is standard equipment for the basic plus and high MMI versions. BOSE sound system A BOSE sound system is installed in the Audi Q7, the technology of which is based on the Bose sound system in the current Audi A6 Avant '05.
  • Page 71 1 R103 Front left mid-range loudspeaker 17 R160 Rear right mid-range and bass loudspeaker 2 R158 Centre treble/mid-range loudspeaker 18 R1113 Aerial amplifier 4 3 R104 Front right mid-range loudspeaker 19 R24 Aerial amplifier 4 J685 Display unit for front information display 20 R105 Rear left mid-range loudspeaker and operating unit control unit (BOSE only)
  • Page 72 Infotainment Aerial system In the Audi Q7, the aerials are vapour-deposited on the rear and side windows and installed in the rear spoiler. The amplifiers for the various systems are installed at the right of the rear window, in the R113 C-pillars and in the rear spoiler.
  • Page 73 Auxiliary heater HF radio IF radio Telephone Passenger side R112 Navigation SDARS, terr. system FM1 + TV1 SDARS SAT FM1 + AM R111 R112 Aerials in spoiler Auxiliary heater FM4 + TV4 C18 Window aerial suppression filter - FM2 + TV2 364_067 Rear window...
  • Page 74 Notes...
  • Page 75 Self-study Programmes on the Audi Q7 The following Self-study Programmes are applicable to the Audi Q7: – SSP 361 Audi Q7 – SSP 362 Audi Q7 - Running Gear – SSP 363 Audi Q7 - Power Transmission – SSP 364 Audi Q7 - Electrics –...
  • Page 76 Vorsprung durch Technik www.audi.de All rights reserved, including the right to make technical modifications. Service.training@audi.de Fax +49-841/89-36367 AUDI AG D-85045 Ingolstadt Technical status 10/05 Printed in Germany A05.5S00.14.20...

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