Service Training: The Audi Q7 Power Transmission
Service Training: The Audi Q7 Power Transmission
Service Training: The Audi Q7 Power Transmission
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Self-Study Program 993603
with respect to the correctness of information in this document. Copyright by AUDI AG.
Audi of America, Inc.
Service Training
Printed in U.S.A.
Printed 02/2006
Course Number 993603
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
2
Table of Contents
Overview
Powertrain concept .................................................................................................... 2
Subassemblies overview ........................................................................................... 4
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Gear selector mechanism
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Service
Service/Special Tools ............................................................................................... 28
Useful information
The self-study program provides introductory information regarding the design and Reference Note
function of new models, automotive components or technologies.
The self-study program is not a Repair Manual!
All values given are intended as a guideline only and refer to the software version
valid at the time of publication of the SSP.
For maintenance and repair work, always refer to the current technical literature.
i
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
ii
Overview
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
363_001
1
Overview
Powertrain concept
363_002
As an SUV with excellent on- and off-road driving Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
dynamics, the Audi Q7 comes standard with the quattro permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
four-wheel drive. with respect to the correctness of information in this document. Copyright by AUDI AG.
2
Overview
Automatic or Manual
Transmission
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
363_003
3
Overview
Sub-assemblies overview
When equipped with the 4.2L V8 FSI engine, the Audi Q7
will use the 09D 6-Speed Automatic Transmission.
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
363_004
363_005
4
Overview
363_007
363_008
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
363_009
The 0AQ Transfer Case has been redesigned for use in the
Audi Q7.
The 0AQ Transfer Case was developed in collaboration
with Borg-Warner. It is manufactured by Borg-Warner.
5
Brief Description of the transmission
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
363_041
Other features:
6
Brief Description of the transmission
363_004
Other features:
7
Gear Selection
Connector A
(10-pin to Vehicle
Wire Harness/
Transmission)
Selector Lever
Sensor System
Control Module
J587 with Tiptronic
Switch F189
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Connector C (10-
pin to Selector
Lever Transmission
Range Position
Funnel/guide DisplayY26)
The funnel facilitates the
emergency release of the
parking lock
Connector Housing
363_042
Reference
For more information on the gear selector
mechanism, please refer to Self-Study
Program 992403, The 2005 Audi A6 Engines
and Transmissions.
8
Gear Selection
P/R/N/D/S signal
The Selector Lever Sensor System Control Module J587 A specific signal frequency is assigned to each selector
is in charge of the signal acquisition for the Tiptronic lever position (see DSO images). The Selector Lever
(Tiptronic Switch F189) and activation of the Selector Sensor System Control Module evaluates the signal and
Lever Transmission Range (TR) Position Display Y26. The activates the corresponding LED on the display unit Y26
Hall sensors used previously to determine the selector (ground activation).
lever position for activating the display unit Y26 are no
longer needed. The information on the selector lever
position (P/R/N/D/S signal) is now transferred directly to The advantages of this new feature are the
the Selector Lever Sensor System Control Module by the following:
Transmission Control Module in the form of a frequency-
modulated square-wave signal (FMR signal). Then, the
- Synchronous indication of selector lever position in
Selector Lever Sensor System Control Module activates
the instrument panel insert and on the selector lever.
the corresponding LEDs on the display unit Y26.
- Cost savings through streamlining of the Selector
Lever Sensor System Control Module J587 (elimination
of additional Hall sensors).
P/R/N/D/S signal
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
9
Gear Selection
- VAG 1598/54
- VAG 1598/42
- VAS 5051A or 5051B
Selector Lever Positions
Test conditions:
— “Ignition ON”
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N
363_045
10
Gear Selection
Tiptronic signal
The information on the selector lever in the Tiptronic
gate, selector lever in Tip+ position or selector lever in
Tip- position is transmitted to the Transmission Control
Module as a frequency-modulated square-wave signal
(FMR signal) over a discrete line (see the DSO images).
Note
Except for the different signal waveform,
the basic function of the selector
mechanism is similar to that of the
selector mechanism in the 2005 Audi A3.
11
Gear Selection
- VAG 1598/54
- VAG 1598/42
- VAS 5051A or 5051B
Test conditions:
— “Ignition ON”
P/R/N/D/S
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Tiptronic Gate
Tiptronic Tip +
Tiptronic Tip -
363_046
12
0AQ Transfer Case
Differential
Oil Pan
Input Shaft
Chain Drive
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
363_012
13
0AQ Transfer Case
Neck Length
Chain Sprocket
Driveshaft
Input Shaft
Chain
Chain Sprocket
363_013
14
0AQ Transfer Case
Introduction
The newly developed 3rd generation Center Differential is A friction torque proportional to the drive torque is
introduced in the Audi Q7.by copyright. Copying for private or commercial purposes,
Protected generated in theisdifferential.
in part or in whole, not This friction torque
permitted unless authorised by AUDI AG. AUDI AG does not guarantee produces
or accepta locking
any liabilitytorque. The locking torque and basic
Like its predecessors, this Center Differential is designed
with respect to the correctness of information in this document.torque
Copyrightdistribution
by AUDI AG. define the torque distribution to the
as a planetary gear, self-locking unit. The asymmetric-
axles.
dynamic torque distribution is a new feature.
An asymmetric basic torque distribution of 42% on the
front axle and 58% on the rear axle is ideal to achieve a
well-balanced vehicle handling.
363_014
100 % 100 %
80 80
58 58
60 %
42 42
40 %
20 20
23 %
0 0
Max. torque distribution to the rear axle (without EDL regulation) 363_015
Max. torque distribution to the front axle (without EDL regulation)
15
0AQ Transfer Case
Components overview
Chain Sprocket
to Front Axle
Input Shaft
(to Rear Axle)
Journal
Bearing Planet
Carrier
Friction
Disc
Sun Gear/
Front Axle
6 Planet Gears
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Friction
Disc
Ring Gear
Drive Hub/
Rear Axle
Friction
Discs
Differential
Housing
Oil 363_017
Channel Bearing
Bushing
Input Shaft
16
0AQ Transfer Case
Planet Gear
Input Torque
Drive Torque to
the Rear Axle
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
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Differential housing
363_018
Ring Gear
Friction Discs
17
0AQ Transfer Case
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Input Torque
Planet Carrier
Sun Gear/
Front Axle
Planet Gear
363_019
Lever arm
18
0AQ Transfer Case
Asymmetric-Dynamic Torque
Distribution
In addition to the asymmetric basic torque distribution of Basically, the center differential responds to changes in
42:58, a friction torque proportional to the drive torque is torque at the axles. If an axle loses traction, the drive
generated in the differential, resulting in a corresponding torque is redirected to the other axle within the locking
locking torque. torque distribution limits.
The locking torque and basic torque distribution are the When the working limits of the center differential are
key factors for the maximum torque distribution to the exceeded, the EDL control is activated and ensures
axles. traction.
100 % 0
60 40
green:
High coefficients of friction
Differential = dry and wet
operating range
42 58
Basic torque
distribution
20 80
EDL
0 100 %
Asymmetric-Dynamic Torque Distribution in the Self-Locking Center Differential (under engine 363_016
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
19
0AQ Transfer Case
Asymmetric-Dynamic Torque
Distribution
The gears of the differential feature a defined helical-cut The magnitude of the lock-up effect is defined by the
gear shape. locking ratio. The locking ratio indicates the transfer
As a result, the drive torque produces an axial force on factor* of the drive torque to the axle which can transfer
the gears, which in turn acts upon various friction discs the greater drive torque.
and generates friction.
* number or quantity that is multiplied by another
The friction provides the desired lock-up effect.
(multiplicand).
Lock-up effect
under engine
torque
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Lock-up effect
while coasting
363_021
20
0AQ Transfer Case
Audi Q7 Self-Locking Center Differential: traction limit* on icy surface at 184 lbs-ft (250 Nm)
t1 t2 t3 t4
736
(1000)
589
(800)
Torque in lb.ft [Nm]
442
(600)
294
(400)
147
(200)
t1 t2 t3 t4
Constant drive torque 736 lbs-ft Rear axle torque EDL braking torque
(1000 Nm)
Traction Front axle torque
363_022
In this example, the Audi Q7 drives over a small patch of 100% of the drive power is converted into forward
ice (driving conditions t2 and t3) under constant drive traction; the EDL control does not need to be activated.
power. The traction limit* is assumed to be 184 lbs-ft At time t3, the front axle has already gone over the patch
(250 Nm) per axle. The total drive torque (t1 and t4) is of ice. Now the rear axle encounters reduced friction and
738 lbs-ft (1000 Nm). can only transfer 184 lbs-ft (250 Nm) of torque. To ensure
optimal traction at the front axle, the EDL now takes
When the vehicle is driven over the patch of ice (t2), the control of the front axle assistance. 85% of the drive
front axle loses traction, thus reducing the drive torque power is converted into forward traction.
to the traction limit* of 184 lbs-ft (250 Nm). Due to the
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept
lock-up effectwith
of respect
the differential, the drive torque to the * maximum
any liabilityamount of torque transferable to an axle over
to the correctness of information in this document. Copyright by AUDI AG.
rear axle increases immediately to 750 Nm. Since the the patch of ice
torque distribution is within the torque distribution range
of the differential, no speed difference occurs between
the axles.
21
0AQ Transfer Case
Vehicle with open center differential, torque split 42/58 traction limit* on icy surface at 184 lbs-ft (250 Nm)
t1 t2 t3 t4
736
(1000)
589
(800)
Torque in lb.ft [Nm]
442
(600)
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
294
with respect to the correctness of information in this document. Copyright by AUDI AG.
(400)
147
(200)
t1 t2 t3 t4
Constant drive torque 736 lbs-ft Rear axle torque EDL braking torque
(1000 Nm)
Traction Front axle torque 363_023
22
0AQ Transfer Case
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
363_035
23
0AQ Transfer Case
363_033
Operation:
Chain Links
Curved Chain
363_034
Cradle Pins/Cradle Joint
24
0AQ Transfer Case
Lubrication
The design of the 0AQ Transfer Case enables the use The transfer case installation location and a low oil
of automatic transmission fluid (ATF) for lubrication level require special means for the lubrication of the
purposes. differential and of the overhead lubrication points.
ATF is known for its low and constant viscosity over a
large temperature range.
The transfer case is lubricated with ATF for the lifetime of
the vehicle.
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
363_036
25
0AQ Transfer Case
Operation:
The upper shafts and the differential are lubricated using An “oil ring” forms in the differential due to the
an oil pan and directional oil channels. centrifugal force. When the vehicle is stationary, this oil
ring collapses and lubricates the inner lubrication points.
During operation, the chain brings the oil upwards where
it is removed by the oil pan. A sophisticated oil channel The differential housing is designed in such a way that
delivers the oil into the differential and toward the input a certain amount of oil remains when the vehicle is
shaft bearing. This ensures sufficient lubrication, even at a standstill. This ensures that the system is always
when driving at walking speed. The system also operates lubricated properly when driving away.
when the vehicle is backing up.
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
The lubrication concept described above allows a
low oil level to be maintained and avoids the need of
forced lubrication. This helps reduce oil waste through
splashing and improve transmission efficiency.
363_037
Note
When repairing the transfer case, caution
should be used to avoid any contamination
of the oil pan and oil channel. They must
be cleaned as required.
26
0AQ Transfer Case
Oil Supply/Sealing
In adverse off-road conditions, the front axle differential,
rear axle differential and transfer case flange shaft seals
are put under a significant amount of stress. This is why
shaft oil seals with special dust and moisture-proof seals
are used.
This illustration shows the sealing of the flange shafts in
the 0AQ Transfer Case.
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Protective Ring
A press-fitted protective ring on the flange shaft acts as a The outer lip seals help to prevent dust and moisture
“defelector ring” and helps keep dirt and water away from coming into contact with the oil lip seal and its contact
the lip seals during vehicle operation. surface.
27
Service
Service/Special Tools
To avoid having to replace shafts, or flanges with sealing As a result, the lip seal of the shaft oil seal runs on a new
surfaces, replacement oil seals must be press-fit more contact surface. This reduces the stress on the sensitive
deeply than when they were assembled during initial lip seal, which, in turn, extends the seal life and improves
production. sealing performance.
Oil Seal A
Assembly line: Press-fitted flush Service: Press-fitted to the limit.
Pressing Tool
T 40115
363_048
363_047
Oil Seal B
Assembly line: Preset length Service: Deeper preset length
Pressing Tool
T 40113
363_049 363_050
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Oil Seal C
Assembly line: Preset length Service: Deeper preset length
Pressing Tool
T 40114
363_051 363_052
28
Useful Information
Operating Instructions
363_040
Reference
For more information on the EDL control,
please refer to the “Off-road mode” section.
363_039
29
Useful Information
Off-road mode
The ESP Off-road mode can be activated, as required, by In Off-road mode, the EDL activation threshold is reduced
pressing the ESP button. in order to optimize traction. Consequently, the EDL is
activated at a lower wheel speed differential.
The purpose of the ESP Off-road mode is to improve
ESP, ASR, ABS and EDL performance on loose ground
(off-road) and to provide the driver with optimum
deceleration and traction.
Special auxiliary functions such as deactivation of the
car-trailer combination stabilization system, a special
“ABS for backing up”, and the “downhill assist” function
assist the driver in rough terrain or on loose surfaces.
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
30
Self-Study Programs for the Audi Q7
Introduction
– SSP 996603 Driver Assistance Systems
– Body
– Passenger protection
– Engine
– Running Gear
– Electrical
– Air conditioning
The 2007 Audi Q7
Vehicle Introduction
– Infotainment
Self-Study Program 991603
Service Training
– Front axle
– Rear axle
– ESP braking system
– Steering systems
The Audi Q7 Running Gear
Service Training
– Automatic transmission
– Manual transmission
– Torsen differential
– Rear wheel drive
Service Training
The Audi Q7 Power Transmission Order number: A05.5S00.16.00
Self-Study Program 995603
SSP 994603
Protected by copyright. Copying for private or commercialThe Audi Q7
purposes, Electrical
in part or in whole, is not
permitted unless authorised by AUDI System
AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
– Networking
– Bus topologies
– Comfort electrical system The Audi Q7 Electrical System
31
Notes
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
32
Knowledge Assessment
Audi Academy
Learning Management Center Headquarters
1-877-AUDI-LMC (283-4562)
(8:00 a.m. to 8:00 p.m. EST)
33
Vorsprung durch Technik www.audiusa.com
993603
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Please read these WARNINGS and CAUTIONS before proceeding with maintenance
and repair work. You must answer that you have read and you understand these
WARNINGS and CAUTIONS before you will be allowed to view this information.
•= If you lack the skills, tools and equipment, or a suitable workshop for any procedure described in
this manual, we suggest you leave such repairs to an authorized Audi retailer or other qualified
shop. We especially urge you to consult an authorized Audi retailer before beginning repairs on
any vehicle that may still be covered wholly or in part by any of the extensive warranties issued by
Audi.
•= Disconnect the battery negative terminal (ground strap)whenever you work on the fuel system or
the electrical system. Do not smoke or work near heaters or other fire hazards. Keep an approved
fire extinguisher handy.
•= Audi is constantly improving its vehicles and sometimes these changes, both in parts and
specifications, are made applicable to earlier models. Therefore, part numbers listed in this
manual are for reference only. Always check with your authorized Audi retailer parts department
for the latest information.
•= Any time the battery has been disconnected on an automatic transmission vehicle, it will be
necessary to reestablish Transmission Control Module (TCM) basic settings using the VAG 1551
Scan Tool (ST).
•= Never work under a lifted vehicle unless it is solidly supported on stands designed for the purpose.
Do not support a vehicle on cinder blocks, hollow tiles or other props that may crumble under
continuous load. Never work under a vehicle that is supported solely by a jack. Never work under
the vehicle while the engine is running.
•= For vehicles equipped with an anti-theft radio, be sure of the correct radio activation code before
disconnecting the battery or removing the radio. If the wrong code is entered when the power is
restored, the radio may lock up and become inoperable, even if the correct code is used in a later
attempt.
•= Do not attempt to work on your vehicle if you do not feel well. You increase the danger of injury to
yourself and others if you are tired, upset or have taken medicine or any other substances that
may impair you or keep you from being fully alert.
•= Never run the engine unless the work area is well ventilated. Carbon monoxide (CO) kills.
•= Always observe good workshop practices. Wear goggles when you operate machine tools or work
with acid. Wear goggles, gloves and other protective clothing whenever the job requires working
with harmful substances.
•= Tie long hair behind your head. Do not wear a necktie, a scarf, loose clothing, or a necklace when
you work near machine tools or running engines. If your hair, clothing, or jewelry were to get
caught in the machinery, severe injury could result.
=Page 1 of 3
© 2002 Audi of America, Inc.
All rights reserved. Information contained in this document 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, Inc., its affiliated 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
modified or reposted to other sites, without the prior expressed written permission of the publisher.
Version 1.0
Cautions & Warnings
•= Do not re-use any fasteners that are worn or deformed in normal use. Some fasteners are
designed to be used only once and are unreliable and may fail if used a second time. This
includes, but is not limited to, nuts, bolts, washers, circlips and cotter pins. Always follow the
recommendations in this manual - replace these fasteners with new parts where indicated, and
any other time it is deemed necessary by inspection.
•= Illuminate the work area adequately but safely. Use a portable safety light for working inside or
under the vehicle. Make sure the bulb is enclosed by a wire cage. The hot filament of an
accidentally broken bulb can ignite spilled fuel or oil.
•= Friction materials such as brake pads and clutch discs may contain asbestos fibers. Do not create
dust by grinding, sanding, or by cleaning with compressed air. Avoid breathing asbestos fibers and
asbestos dust. Breathing asbestos can cause serious diseases such as asbestosis or cancer, and
may result in death.
•= Finger rings should be removed so that they cannot cause electrical shorts, get caught in running
machinery, or be crushed by heavy parts.
•= Before starting a job, make certain that you have all the necessary tools and parts on hand. Read
all the instructions thoroughly, do not attempt shortcuts. Use tools that are appropriate to the work
and use only replacement parts meeting Audi specifications. Makeshift tools, parts and
procedures will not make good repairs.
•= Catch draining fuel, oil or brake fluid in suitable containers. Do not use empty food or beverage
containers that might mislead someone into drinking from them. Store flammable fluids away from
fire hazards. Wipe up spills at once, but do not store the oily rags, which can ignite and burn
spontaneously.
•= Use pneumatic and electric tools only to loosen threaded parts and fasteners. Never use these
tools to tighten fasteners, especially on light alloy parts. Always use a torque wrench to tighten
fasteners to the tightening torque listed. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
•= Keep sparks, lighted matches, and open flame away fromtothe
with respect top of the
the correctness battery.inIfthis
of information escaping
document. Copyright by AUDI AG.
hydrogen gas is ignited, it will ignite gas trapped in the cells and cause the battery to explode.
•= Be mindful of the environment and ecology. Before you drain the crankcase, find out the proper
way to dispose of the oil. Do not pour oil onto the ground, down a drain, or into a stream, pond, or
lake. Consult local ordinances that govern the disposal of wastes.
•= The air-conditioning (A/C) system is filled with a chemical refrigerant that is hazardous. The A/C
system should be serviced only by trained automotive service technicians using approved
refrigerant recovery/recycling equipment, trained in related safety precautions, and familiar with
regulations governing the discharging and disposal of automotive chemical refrigerants.
•= Before doing any electrical welding on vehicles equipped with anti-lock brakes (ABS), disconnect
the battery negative terminal (ground strap) and the ABS control module connector.
•= Do not expose any part of the A/C system to high temperatures such as open flame. Excessive
heat will increase system pressure and may cause the system to burst.
=Page 2 of 3
© 2002 Audi of America, Inc.
All rights reserved. Information contained in this document 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, Inc., its affiliated 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
modified or reposted to other sites, without the prior expressed written permission of the publisher.
Version 1.0
Cautions & Warnings
•= When boost-charging the battery, first remove the fuses for the Engine Control Module (ECM), the
Transmission Control Module (TCM), the ABS control module, and the trip computer. In cases
where one or more of these components is not separately fused, disconnect the control module
connector(s).
•= Some of the vehicles covered by this manual are equipped with a supplemental restraint system
(SRS), that automatically deploys an airbag in the event of a frontal impact. The airbag is operated
by an explosive device. Handled improperly or without adequate safeguards, it can be accidentally
activated and cause serious personal injury. To guard against personal injury or airbag system
failure, only trained Audi Service technicians should test, disassemble or service the airbag
system.
•= Do not quick-charge the battery (for boost starting) for longer than one minute, and do not exceed
16.5 volts at the battery with the boosting cables attached. Wait at least one minute before
boosting the battery a second time.
•= Never use a test light to conduct electrical tests of the airbag system. The system must only be
tested by trained Audi Service technicians using the VAG 1551 Scan Tool (ST) or an approved
equivalent. The airbag unit must never be electrically tested while it is not installed in the vehicle.
•= Some aerosol tire inflators are highly flammable. Be extremely cautious when repairing a tire that
may have been inflated using an aerosol tire inflator. Keep sparks, open flame or other sources of
ignition away from the tire repair area. Inflate and deflate the tire at least four times before
breaking the bead from the rim. Completely remove the tire from the rim before attempting any
repair.
•= When driving or riding in an airbag-equipped vehicle, never hold test equipment in your hands or
lap while the vehicle is in motion. Objects between you and the airbag can increase the risk of
injury in an accident.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
=Page 3 of 3
© 2002 Audi of America, Inc.
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