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Audi Q7 Service Training

New driver assistance systems
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Service Training
Audi Q7 - New Driver Assistance Systems
Audi side assist
Optical parking system (OPS)
Reversing camera
Self-study programme 375

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Summary of Contents for Audi Q7

  • Page 1 Service Training Audi Q7 - New Driver Assistance Systems Audi side assist Optical parking system (OPS) Reversing camera Self-study programme 375...
  • Page 2 New driver assistance systems that have been introduced into series production for the first time on board the Audi Q7 make a considerable contribution in this regard. On request, a number of innovative driver assistance systems are also available in the Q7, for example the radar-based Audi side assist, the optical parking system with audible and visual information and the reversing camera.
  • Page 3 Contents Audi side assist ........4 Optical parking system (OPS) .
  • Page 4 Audi side assist in the Audi Q7 Introduction The purpose of the Audi side assist is to monitor the area behind and to the side the vehicle using radar sensors and assist the driver when changing lanes. The area monitored also includes the so-called "blind spot"...
  • Page 5 Radar sensors and control units The Audi side assist is equipped with two control units, the side assist control unit J769 (master control unit) and the side assist control unit 2 J770 (slave control unit). The master control unit forms a...
  • Page 6 Fitting locations In the Audi Q7, the two control unit modules are located in the area of the rear bumper and fastened to the end plate. The end plate is clipped to the bumper cover and bolted to the body. The bumper conceals the modules, making them invisible from the outside, unlike the parking aid sensors.
  • Page 7 50 metres of the rear detection zone. This deactivation threshold is provided with a hysteresis of 30 metres. This means that if the Audi side assist has been deactivated due to the radius of the curve, it is reactivated when the radius of a curve exceeds 200 m.
  • Page 8 They comprise four yellow LEDs. 375_006 If the Audi side assist recognises a critical situation in one of the two lanes, and no imminent lane change is indicated, the driver is informed of this situation through illumination of the warning lamp in the relevant exterior mirror.
  • Page 9 Audi side assist are described below: Scenario 1 The vehicle with the Audi side assist is being driven in the centre lane of a three-lane motorway and is currently overtaking the vehicle on the right-hand side.

  • Page 10: Operating The System

    The side assist button E530 is located in the driver door, to the right of the central locking switch. The button is used for switching the Audi side assist on and off. A red LED in the button indicates its current status. If the LED is illuminated, this means that the Audi side assist is switched on.
  • Page 11 Log book the brightness of the warning lamps in the exterior Display brightness mirrors. For this purpose, the "Audi side assist" menu item in the Car menu of the MMI must be selected and activated by pressing the rotary control.
  • Page 12 Audi side assist Implementation of function in hardware and software System circuit diagram The master and slave control units exchange data via a dedicated high-speed CAN bus. The master control unit is connected to the extended CAN, enabling data exchange with other bus modules via the data bus diagnostic interface J533.
  • Page 13 Allocation of tasks between master and slave control units The two control units emit radar beams using the transmitting aerials. The emitted radar beams are reflected by objects. Depending on the nature of the object, many, few or no beams at all are reflected. The reflected beams are measured in the two control units by means of three receiving aerials.
  • Page 14 Communication structure of the Audi side assist The Audi side assist requires a large amount of information from a number of different control units which are in turn connected to the various bus systems. Below is a description of the control units that exchange data with the Audi side assist via bus systems and the information and variables in question.
  • Page 15 Informs the driver by means of error messages in Access and start authorisation control unit J518 the event of faults in the Audi side assist and also outputs an acoustic signal to this effect. Transmits the key number of the vehicle key currently being used.
  • Page 16 The fault memory, the measured value blocks, the code and the adaption channels of the Audi side assist are all to be found in the side assist master control unit J769. The following variables can be found in the...
  • Page 17 The laser projects a vertical line onto the rear of the vehicle, which when aligned correctly divides, for example, the Audi emblem on the rear end into two equal halves. Once the alignment is complete, the calibration procedure can be started using the diagnostics tester.
  • Page 18 Infrared sensors, in contrast, are particularly well-suited for detecting lateral movements but are very poor at detecting movements towards or away from the sensor. It is this direction of movement in particular, however, that is crucial for the Audi side assist. Moreover, infrared sensors are also very sensitive to environmental effects such as rain.
  • Page 20 Optical parking system (OPS) Optical parking system (OPS) in the Audi Q7 Introduction The optical parking system (OPS) is an innovative Parking aid system extension of previous Audi parking aid systems. The 4-channel (rear only parking aid) and the 8-channel (front and rear parking aid) systems are already familiar.
  • Page 21 Parking aid control unit J446 The purpose of the parking aid control unit is to: ● Provide the supply voltage for the parking aid sensors ● Evaluate and process the signals from the parking aid sensors ● Activate the two parking aid warning buzzers H15 and H22 375_017 ●...
  • Page 22 Fourth generation Fifth generation parking aid sensor parking aid sensor The Audi Q7 is the first vehicle to use fifth generation parking aid sensors. They are much smaller compared to the dimensions of fourth generation sensors. The solid plastic housing,...
  • Page 23 Car menu of the MMI under the item "Audi parking system". The setting options available to the customer in the MMI are explained in greater detail in the chapter on the reversing camera system.
  • Page 24 Optical parking system (OPS) Information to the driver If an obstacle has been detected inside the warning OPS display in the MMI High zone while the parking aid system is activated, Parking system the distance warning is triggered. As the distance to the obstacle decreases, the time between the sound Segment pulses also diminishes until it becomes a...
  • Page 25 Communication structure of the optical parking system In order to operate correctly, the parking aid control unit also requires information from other control units. The control unit receives this information via the convenience CAN. Information required from the modules of other bus systems is made available on the convenience CAN by the data bus diagnostic interface and is thus accessible to the parking aid control unit.
  • Page 26 Optical parking system (OPS) The following information is supplied to the parking aid control unit J446 by the control units listed below: Onboard supply control unit J519 ABS control unit J104 The reversing lights are on. It can be deduced from Transmits the current vehicle speed.
  • Page 27 Diagnostics In the diagnostics tester, the address word 76 is assigned to the parking aid control unit. The following variables can be found in the measured value blocks: ● Distance of the individual rear sensors from an obstacle ● Distance of the individual front sensors from an obstacle ●...
  • Page 28 Reversing camera (rear-view) in the Audi Q7 Introduction The AUDI reversing camera provides the customer with an improved view to the rear by capturing the area behind the vehicle and depicting this on the MMI screen. This makes it much easier for customers to reverse and reverse park.
  • Page 29 Reversing camera The Audi reversing camera is a PANASONIC camera. It weighs 40 g and measures 27 mm x 24.5 mm x 35 mm. Due to its compact design, it was possible to integrate the camera into the tailgate handle.
  • Page 30 Reversing camera (rear-view) Reversing camera system control unit J772 Tasks of the control unit The reversing camera system control unit J772 is connected to the convenience CAN. The purpose of the reversing camera system control unit is to: ● Supply the reversing camera with voltage ●...
  • Page 31 System circuit diagram The reversing camera and the corresponding control unit are connected together by 4 wires. These are the wire for the camera’s power supply and the corresponding earth wire, a screened wire for the video signal and the screening of the video signal connected to earth. The camera is switched on and off via the voltage supply.
  • Page 32 Reversing camera (rear-view) Parking modes With the Audi reversing camera, there are two different parking modes - the “transverse parking” mode and the “parallel parking” mode. Depending on the parking situation, the customer can opt for one of the two modes.
  • Page 33 Parking mode 2: parallel parking Parking mode 2, “parallel parking”, makes it easier for the driver to reverse park alongside the kerb. Two blue fields are depicted - a light-blue field for reverse parking on the right-hand side and a dark-blue field for reverse parking on the left.
  • Page 34 In vehicles with OPS, pressing the parking aid button also terminates display of the reversing camera on the screen. Setting options in the MMI As is already familiar from other Audi models with a User Log book parking aid system, the customer has the option of...
  • Page 35 Communication structure of the reversing camera system The reversing camera system control unit exchanges information with various control units. This information is required for the correct operation of the overall function and is described below: Reversing camera K189 Onboard supply Parking aid control Convenience system control unit...
  • Page 36 Transmits the current status of terminal 15 to the reversing camera. Remarks The following control units are optional and therefore not installed in every Audi Q7: ● Parking aid control unit J446 ● Trailer recognition control unit J345 ●...
  • Page 37 ● Status of last calibration ● Cause of a failed calibration The following characteristics are encoded in the code: ● Vehicle manufacturer VW / Audi ● Country version ● OPS (optical parking system) installed - yes / no ● Trailer hitch installed - yes/no ●...
  • Page 38 Reversing camera (rear-view) Special tool for system calibration The same calibration board is used for calibrating the reversing camera as is also used for calibrating the Audi side assist. The Doppler generator is however not required. The way in which the calibration board must be aligned to the vehicle is described in detail in the corresponding Workshop Manual and is also briefly outlined in the chapter on calibrating the Audi side assist.
  • Page 39 Self-study programme for the Audi Q7 SSP 312 Audi A3 ‘04 – Control units – Distributed functions – Infotainment – Passenger protection Order number: A03.5S00.03.20 375_041 SSP 326 Audi A6 ´05 Electrical system – Networking – Bus topologies – Convenience electrics –...
  • Page 40 Vorsprung durch Technik www.audi.de All rights reserved, including the right to make technical modifications. Copyright AUDI AG I/VK-35 Service.training@audi.de Fax +49-841/89-36367 AUDI AG D-85045 Ingolstadt Technical status 10/05 Printed in Germany A05.5S00.21.20...