Audi q7 2017 User manual

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The 2017 Audi Q7 Occupant Protection
and Infotainment System
eSelf Study Program 970363

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Audi of America, LLC
Service Training
Created in the U.S.A.
Created 9/2015
Course Number 970363
©2015 Audi of America, LLC
All rights reserved. Information contained in this manual is based on
the latest information available at the time of printing and is subject to
the copyright and other intellectual property rights of Audi of America,
LLC., its aliated companies and its licensors. All rights are reserved to
make changes at any time without notice. No part of this document
may be reproduced, stored in a retrieval system, or transmitted in any
form or by any means, electronic, mechanical, photocopying, recording
or otherwise, nor may these materials be modied or reposted to other
sites without the prior expressed written permission of the publisher.
All requests for permission to copy and redistribute information should
be referred to Audi of America, LLC.
Always check Technical Bulletins and the latest electronic service repair
literature for information that may supersede any information included
in this booklet.
Revision 1:10/2015

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This eSelf Study Program teaches a basic knowledge of the design and functions of new models,
new automotive components or technologies.
It is not a Repair Manual! All values given are intended as a guideline only.
For maintenance and repair work, always refer to the current technical literature.
Note
Reference
Introduction ..................................................................................... 1
Passive safety .................................................................................... 2
Overview ................................................................................................................................................................... 2
Components ............................................................................................................................................................. 2
System overview ...................................................................................................................................................... 4
Center Crash Sensor for X/Y Axis G858 ................................................................................................................. 6
Airbag control unit J234 .......................................................................................................................................... 6
Safety belts ............................................................................................................................................................ 10
Lap belt tensioner with buckle ............................................................................................................................. 14
Active safety .................................................................................... 16
Audi pre-sense ....................................................................................................................................................... 16
Pre sense basic ....................................................................................................................................................... 16
Pre sense rear ........................................................................................................................................................ 19
Pre sense front ....................................................................................................................................................... 22
Pre sense city ......................................................................................................................................................... 28
Settings and displays ............................................................................................................................................ 32
Infotainment ................................................................................... 42
Overview of versions .............................................................................................................................................. 42
MMI Radio plus ...................................................................................................................................................... 43
MMI Navigation plus ............................................................................................................................................. 44
Audi connect .......................................................................................................................................................... 45
Control panel .......................................................................................................................................................... 46
Display mechanism ............................................................................................................................................... 50
Audi music interface .............................................................................................................................................. 53
Network system ..................................................................................................................................................... 54
Sound systems ....................................................................................................................................................... 56
Antenna overview .................................................................................................................................................. 62
Self-Study Programs........................................................................ 64
Knowledge assessment ................................................................... 65

iv

1
Occupant safety
Passive safety
Airbag Control Module J234 has been enhanced for the
occupant protection system in the 2017 Audi Q7. It houses
a sensor which now measures around the Z axis of the
vehicle.
Communication with other control modules is now done
via the FlexRay data bus. This allows for example, the ABS
control module to receive real time data about vehicle
rotation around the Z axis that is utilized by the Electronic
Stability Control (ESC) system.
Active safety
Four Audi pre-sense functions are available for the Audi Q7.
In addition to Audi pre-sense basic, these are:
• presenserear.
• presensefront.
• presensecity.
Audi pre sense city warns the driver about vehicles and
pedestrians and brake within system limitations. Audipre
sense front brings to the Audi Q7 new functions such as
evasion assist and turn assist.
Learning objectives of this Self Study Program:
Once you have completed this Self-Study Program you will
be able to answer questions on the following topics:
• New passive safety features.
• New active safety features.
• Modications to and new features of the infotainment
system.
637_097
Infotainment
Audi oers various levels of the infotainment modules for
the AudiQ7. MMIRadioplus is standard. This oers inter-
faces for external devices such as mobile phones or
memory cards. The Audi sound system delivers excellent
sound quality from its ten speakers.
MMI navigation plus also includes the feature Audi connect,
which connects the Audi Q7 to the Internet via the LTE
standard. Rear passengers can surf via the WiFi hotspot
with download speeds of up to 100 Mbit/s and send and
receive e-mail. The driver can use the customized Audi
connect services ranging from online trac information to
navigation with Google Earth and Google Street View to
online media streaming.
Introduction

2
Components
• Airbag Control Module.
• Adaptive driver airbag.
• Adaptive front passenger airbag
(front passenger airbag, two-stage country version).
• Front side airbags.
• Rear side airbags (equipment option).
• Side curtain airbags.
• Front airbag crash sensors.
• Crash sensors for side impact detection in the doors.
• Crash sensors for side impact detection in the ’C’ pillars.
• Crash sensor for side and longitudinal impact detection.
• Center pedestrian protection crash sensor
(acceleration sensor, country version).
• Left and right pedestrian protection crash sensors
(pressure sensors).
Front passenger airbag Front side airbagDriver airbag
Front side airbag
• Front inertia-reel safety belts with pyrotechnic belt tensioners.
• Front inertia-reel safety belts with electrical belt tensioners.
• Front inertia-reel safety belts with active belt force limiters.
• Inertia-reel safety belts for second seat row with pyrotechnic
belt tensioners, driver and front passenger sides.
• Inertia-reel safety belts for third seat row with pyrotechnic
belt tensioners, driver and front passenger sides.
• Front lap belt tensioner.
• Safety belt warning for all seats.
• Seat occupancy sensor in front passenger seat.
• Front passenger airbag disabling switch.
• Front passenger airbag OFF and ON warning lamp.
• Driver and front passenger seat position sensors.
• Battery interrupter circuit.
Overview
Passive safety

3
637_007
Front side airbag Side curtain airbag,
driver and front passenger side
Rear side airbag
Rear side airbag

4
637_009b
System overview

5
Key to gure on page 4:
E24 Driver Seat Belt Switch
E25 Front Passenger Seat Belt Switch
F390 Driver Side Second Row Seat Belt Switch
F391 Center Second Row Seat Belt Switch
F392 Driver Side Third Row Seat Belt Switch
F393 Driver Side Third Row Seat Belt Switch
F395 Passenger Side Third Row Seat Belt Switch
G128 Front Passenger Occupant Detection Sensor
G179 Driver Thorax Airbag Crash Sensor
G180 Front Passenger Thorax Airbag Crash Sensor
G256 Driver Side Rear Thorax Airbag Crash Sensor
G257 Passenger Side Rear Thorax Airbag Crash Sensor
G283 Driver Front Airbag Crash Sensor
G284 Passenger Side Front Airbag Crash Sensor
G551 Driver Belt Force Limiter
G552 Front Passenger Belt Force Limiter
G553 Driver Seat Position Sensor
G554 Front Passenger Seat Position Sensor
G858 Center Crash Sensor for X/Y Axis
J234 Airbag Control Module
J285 Instrument Cluster Control Module
J533 Data Bus On Board Diagnostic Interface (Gateway)
J706 Passenger Occupant Detection System Control Module
J854 Left Front Seat Belt Tensioner Control Module
J855 Right Front Seat Belt Tensioner Control Module
K19 Seat Belt Indicator Lamp
K75 Airbag Indicator Lamp
K145 Front Passenger Airbag -disabled- Indicator Lamp
N95 Driver Airbag Igniter
N131 Front Passenger Airbag Igniter 1
N132 Front Passenger Airbag Igniter 2
N153 Driver Seat Belt Tensioner Igniter 1
N154 Front Passenger Seat Belt Tensioner Igniter 1
N196 Driver Side Rear Seat Belt Tensioner Igniter
N197 Passenger Side Rear Seat Belt Tensioner Igniter
N199 Driver Thorax Airbag Igniter
N200 Front Passenger Thorax Airbag Igniter
N201 Driver Side Rear Thorax Airbag Igniter
N202 Passenger Side Rear Thorax Airbag Igniter
N251 Driver Head Curtain Airbag Igniter
N252 Front Passenger Head Curtain Airbag Igniter
N253 Battery Interrupt Igniter
N297 Driver Seat Belt Tensioner Igniter 2
N298 Front Passenger Seat Belt Tensioner Igniter 2
N490 Driver Airbag Release Valve Igniter
N491 Front Passenger Airbag Release Valve Igniter
N668 Driver Side Third Row Seat Belt Tensioner Igniter
N669 Front Passenger Side Third Row Seat Belt Tensioner
Igniter
T16 16-pin Data Link Connector

6
XY
Center Crash Sensor for X/Y Axis G858
Center Crash Sensor for X/Y Axis G858 is for measuring the
movement (both acceleration and de-acceleration) of the
vehicle along the X/Y axes.
It is used to validate the plausibility of dened crash situations.
Installation location
It is located on the center body tunnel near the cross
member of the driver’s seat.
637_011
637_010
Airbag Control Module J234
Sensors and data bus interface
The airbag control module for the Q7 has undergone
extensive modication.
Sensors that measure acceleration in the X and Y directions
and the yaw rate around the vehicle’s Z axis (inertial
sensors) are now installed in Airbag Control Module J234.
J234 is now connected to the FlexRay bus to help ensure a
minimum reaction time of approximately 2ms in the event
of a crash.
Airbag Control Module J234 records and provides body
movement data to ABS Control Module J104 (as well as
other modules). J104 processes this information and initi-
ates the appropriate action regarding all ESC functions.
Center Crash Sensor
for X/Y Axis
G858
Airbag Control Module
J234
637_050

7
X
Z
Y
637_013
637_014 637_015
Measurement of longitudinal vehicle movement in X, Y and Z directions
The sensors for the measurement of longitudinal vehicle
movement in X, Y and Z directions work on the "seismic
mass" principle.
Capacitor plate
(movably mounted)
Seismic mass
Spring element
Capacitor plate
(stationary)
Housing
Direction of measurement
Design of the sensor
A moveable mounted mass (seismic mass) is integrated in
the sensor at a dened distance to a stationary capacitor
plate acting as an electrode. The seismic mass also has
electrodes, which combine with the stationary electrodes
to form a capacitor.
An acceleration force acting on the sensor changes the
position of the seismic mass relative to the stationary
capacitor plate. This, in turn, changes the physical magni-
tude of the capacitance, which is processed digitally and
evaluated.
Rest position Movement

8
X
Z
The sensor consists of a micromechanical body which is
permanently subjected to oscillation excitation.
When the vehicle turns, the direction of movement of the
oscillating body changes. These deections relative to the
direction of movement (changes in movement) are pro-
cessed digitally and evaluated accordingly.
To measure rotation about the X and Z axes, a rollover sensor
(for rollover detection) and an inertial sensor (for ESC signal
indicating yaw rate about Z) are arranged at a 90° oset
relative to each other in Airbag Control Module J234.
Airbag Control Module J234
637_016b
Measurement of vehicle rotation about the X and Z axes
The sensors for the measurement of vehicle rotation about
the X and Z axes work on the "Coriolis force" principle.
When the disc rotates while the ball is rolling on the plat-
form, however, the ball is deected opposite the direction
of motion of the disc. The degree of deection depends on
the rotational speed of the disc.
637_012
637_016a
The Coriolis force acts on all bodies that move within a
rotating reference system. The eect of the Coriolis force is
demonstrated in the example given here. A ball is rolled on
a disc. When the disc is stationary the ball rolls straight
across it.
637_088

9
Activation of the electrically reversible safety belt tensioners
When corrective adjustments are made by Audi pre-sense,
Airbag Control Module J234 initiates tensioning of the
safety belts via Left and Right Front Seat Belt Tensioner
Control Modules J854 and J855. They communicate with
each other through a sub-bus system.
637_008
637_018
Terminal 30
Diagnostics
Airbag Control Module J234 is connected to Terminal 30
and Terminal 15. In addition, it receives digital information
on the status of Terminal 15 from Data Bus On Board Diag-
nostic Interface J533 through a discreet wire. The airbags
will only deploy when the ignition is switched on.
A capacitor is integrated with Airbag Control Module J234.
Its function is to provide power if Terminal 30 or 15 is
disconnected during a vehicle crash.
The Airbag Control Module is diagnosed with the VAS Scan
Tool using Address Word 15.
Because there are tolerances when installing the Airbag
Control Module, the internal inertial sensors must be
calibrated so they will accurately measure the X , Y axes
and the yaw rate about the Z axis.
If a new control module is installed but not calibrated,
the DTC - “C115E54 inertial sensors no basic setting” is
recorded in its fault memory.
The inertial sensors must be calibrated after the following
work:
• Removal/installation of Airbag Control Module J234.
• Replacement of Airbag Control Module J234.
Key:
ABattery
J234 Airbag Control Module
J367 Battery Monitoring Control Module
J519 Vehicle Electrical System Control Module
J533 Data Bus On Board Diagnostic Interface
Data Bus On Board
Diagnostic Interface
J533
Airbag Control Module
J234
Left Front Seat Belt
Tensioner Control Module
J854
Passenger Occupant
Detection System Control
Module
J706
Right Front Seat Belt
Tensioner Control Module
J855
From the topology chart
Function diagram
LIN bus
FlexRay
LIN bus
FlexRay
Sub-bus

10
Safety belts
Front automatic belt retractor
With Audipresensebasic, the front automatic belt retrac-
tors are equipped with pyrotechnic belt tensioners, active
belt force limiters and with reversible safety belt tensioners
with electric motors.
Left and Right Front Seat Belt Tensioner Control Modules
J854 and J855 communicate with Airbag Control Module
J234 over a sub-bus system. J854 and J855 have no “intelli-
gence but are actuators of the airbag control module.
When Audi pre-sense basic detects specic driving situa-
tions, corresponding signals are placed on the data bus.
The airbag control module evaluates these signals and if
necessary instructs J854 and J855 to partially or fully
tension the safety belts.
The Q7 uses ball-type pyrotechnic safety belt retractors. It
is NOT necessary to perform a Basic Setting Test Plan if the
belt is replaced.
637_085
Outer automatic seat belt retractors for the 2nd and 3rd seat rows
The automatic seat belt retractors of the 2nd and 3rd seat
rows are equipped with pyrotechnic belt tensioners.
The automatic seat belt retractors use pyrotechnic push rod
tensioners.
637_087
Automatic seat belt
retractor 3rd seat row
Reversible belt tensioner
with electric motor
Pyrotechnic safety
belt tensioner
Active belt force limiter
Automatic seat belt
retractor 2nd seat row

11
Push rod tensioner
Design
637_098
637_100
5-piece exible push rod made of
plastic "Snake" (5)
Guide tube/pressure chamber (3)
Belt retractor shaft as torsion bar
spring (6)
Gear (7)
Guide (8)
Piston (2) with:
• seal
• stopper
• spacer
Plugged electrical connection (1) with:
• igniter
• pyrotechnic propellant charge
Braking wedge
(4)
Piston (2) and push rod "Snake" (5)
The guide tube/pressure chamber (3), accommodates the
following:
• Plugged electrical connection with igniter and pyrotech-
nic propellant charge (1).
• 5-piece exible push rod "Snake" (5) and "Snake" guide.
• Pressure chamber (3).
• Braking wedge (4).
• Piston (2) (including seal, stopper and spacer).
Piston (2) with:
• seal
• stopper
• spacer
4 short parts of the "Snake" Main part of the "Snake"

12
Function
When J234 instructs the safety belt to deploy, the propel-
lant charge (1) ignites and there is a sudden rise of pres-
sure inside the guide tube/pressure chamber (3). The pres-
sure moves the piston (2) and the “Snake” (5) downward.
637_101
637_102
After the "Snake" (5) has moved out of the guide tube, it
contacts the gear (7) which is rmly connected to the
retractor shaft (6). The teeth of the gear mesh with the
"Snake" due to the material characteristics and geometry of
the components. The "Snake" is pushed further down and
causes the gear together with the retractor shaft to rotate.
Pyrotechnic pro-
pellant charge (1)
"Snake" (5)
"Snake" (5)
Guide tube/pres-
sure chamber (3)
Retractor shaft (6)
Piston (2)
Gear (7)

13
Because the safety belt is connected to the belt retractor
shaft (6), the belt is retracted and tensioned.
To help ensure the belt force exerted on the occupants
stays within a dened range, it is limited by the retractor
shaft (6) which is a torsion bar spring. The “Snake” (5) is
moved to the side by the guide (8) in a controlled manner.
The distance which the piston (2) travels is limited by the
stopper which moves up against the braking wedge (4).
637_103
637_104
When the stopper (2) has reached the end of its travel, the
long part of the "Snake" (5) protrudes a dened distance
from the guide tube/pressure chamber (3). At this point,
four short parts of the "Snake" come into contact with the
gear (7). Due to the ve-piece design of the "Snake", the
four short parts displace and push the "Snake" in such a
way that the gear and the retractor shaft (6) are again free.
The belt tensioning process is now complete.
"Snake" (5)
Gear (7)
Guide (8)
Braking
wedge (4)
Piston (2)
Piston with
stopper (2)
"Snake" (5)
Guide tube/pres-
sure chamber (3)
Retractor
shaft (6)
Retractor
shaft (6)

14
Lap belt tensioner with buckle
The AudiQ7 is equipped with lap belt tensioners, Driver
Seat Belt Tensioner Igniter 2 N297 and Front Passenger
Seat Belt Tensioner Igniter 2 N298 on the driver and front
passenger sides.
When lap belt tensioners are installed, the safety belt of
the automatic belt retractor has a buckle.
When the safety belt is being worn, the lap belt tensioner
in combination with the buckle performs the following
tasks in the event of an accident which meets the criteria
for deployment:
• Separation of the force acting on the pelvis from the
force acting on the thorax.
• Reduced chest compression.
• Reduced upper thigh load.
• Reduced forward displacement of the pelvis.
• Improved interfacing between the pelvis and seat.
637_044
Buckle
Automatic belt retractor
Belt deector
Lap belt tensioner
Coupling
Accident response sequence
In the event of an accident meeting the criteria for deploy-
ment, the airbag control module deploys the safety belt
tensioners and lap belt tensioners. The lap belt tensioner
tensions the part of the safety belt between the occupant’s
pelvis and the buckle.
637_045
Safety belt travel
Overview

15
Diagnostics
The lap belt tensioner is a pyrotechnic component. The
safety instructions are the same as for other pyrotechnic
components. The lap belt tensioner is damaged when
ignited and has to be replaced as a unit.
Airbag Control Module J234 continuously monitors the lap
belt tensioners for proper functioning and will enter a DTC
if faults are detected.
Buckle
The dierence between this safety belt buckle and a
"regular" safety belt buckle is that it locks the belt in the
event of an accident which matches the criteria for deploy-
ment. The result is a load path for the thorax region and a
load path for the pelvic region, with all the aforementioned
benets for the occupants.
637_047
Belt deector
Foam pad
Steel cable of the
lap belt tensioner
637_048
Seat belt join
Coupling
The safety belt is deected in the area of the ‘B’ pillar and is
able to move upwards. A coupling is stitched to the end of
the safety belt. The lap belt tensioner coupling is inserted
into the safety belt coupling and clipped into place. To
insulate against noise, a foam pad is installed in the cou-
pling area.
Coupling
The lap belt tensioners are bolted into place on the ‘B’
pillars.
Installation location of the lap belt tensioner
637_046
Lug engaged
in the ‘B’ pillar
Lap belt tensioner
On left hand side
of the vehicle
Reference
For further information about the function of the lap belt tensioner and buckle, please see eSelf-Study Program
990143, The 2015 Audi A3 Introduction.
Lap belt tensioner

16
Audi pre-sense
Audi pre-sense is able to initiate actions that protect occu-
pants and other road users in certain critical situations.
This is made possible by networking the various in-car
systems which communicate continuously on the data bus.
Other control modules are able to evaluate this data and
take appropriate action.
Please note that Audi pre sense cannot prevent collisions.
It serves only to assist the driver and it can reduce the
severity of the collision. It should also be noted that not all
objects or lane makings can be detected by the sensor or by
the camera. The individual functions of Audipresense are
described in greater detail below.
Audi pre-sense basic PR no. 7W1
Audi pre sense city PR no. 6K8
Audi pre-sense front PR no. 8T3 / 8T8
Audi pre sense rear
inclusive of pre sense basic
PR no. 7W3
Pre sense basic
With Audipresensebasic, the following actions can be
initiated:
• Belt slack reduction.
• Partial or full tensioning of the electrically reversible
safety belt tensioners.
Denition and function of belt slack reduction system for reversible safety belt tensioners
In certain situations, for example, when wearing a thick
winter jacket, it may be the case that the safety belt is not
tight tting to the body after the reversible safety belt
tensioners deploy. In such a case, the mechanical unreeling
force of the automatic safety belt retractor is less than the
force required to compress the thick winter jacket. The
distance which the safety belt can travel until it ts the
front occupants perfectly is referred to as "belt slack".
637_004
• Closing the panoramic glass sunroof.
• Closing the side windows.
• Switching on the emergency warning ashers.
637_005
The safety belt is unreeled with dened force by the revers-
ible seat belt tensioners under the following conditions.
This enables any existing belt slack to be reduced.
• If the vehicle reaches a speed of about 9.3 mph (15
km/h) after starting the engine and traveling forwards.
• If the vehicle has not reached a speed of 9.3 mph (15
km/h) about 10seconds after starting the engine and
traveling forwards.
Safety belt ts rightly
(minimum belt slack)
Safety belt on "thick" clothing
(more belt slack)
Active safety