2018 Audi Q7 Download Service & Repair Manual
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General InformationBody Repairs,
General Body Repairs
Edition 10.2021
Service
Service Department. Technical Information
Repair Group
Technical information should always be available to the foremen and mechanics, because their
careful and constant adherence to the instructions is essential to ensure vehicle road-worthiness
and safety. In addition, the normal basic safety precautions for working on motor vehicles must, as
a matter of course, be observed.
Service
All rights reserved.
No reproduction without prior agreement from publisher.
Copyright © 2021 Audi AG, Ingolstadt 001KAH00020
Contents
1 Safety briefing/employee qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Safety precautions when working on the cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Safety precautions when using testers and measuring instruments during a road test . . . . 5
2.4 High-voltage components / electric vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Repair instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Information on handling fine dust, aluminium dust and steel dust . . . . . . . . . . . . . . . . . . . . 6
3.2 Bonding surfaces for self-adhesive components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Secure threaded connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 Identification plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5 Impact wrenches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.6 Multi-material mix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.7 Extraction systems for steel/aluminium body repair station ("multi-material-mix" workplace)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.8 Battery, power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.9 Air conditioning system / refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.10 Electronic control units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 General notes on body repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Original joint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Galvanised body parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3 Removing remaining material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.4 New parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.5 Moulded foam inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 Symbols relating to procedures for separating components . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2 Symbols relating to welding, brazing and soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.3 Symbols relating to rivets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.4 Symbols relating to preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.5 Symbols relating to corrosion protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 Vehicle body construction features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.1 Body structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7 Assessing damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.2 Checking weld seams and aluminium node castings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.3 Load paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.4 Measuring procedures / damage diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.5 Overview of materials used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.6 Passive safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8 Thermal joining techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.1 Resistance spot welding (RP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.2 Shielded arc plug welding (SG plug welding) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.3 SG continuous seams and stitch weld seams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.4 MIG soldering/brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.5 Aluminium welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.6 Laser welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.7 Laser soldering/brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.8 Replacement joining techniques in repair work (steel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.9 Replacement joining techniques in repair work (aluminium) . . . . . . . . . . . . . . . . . . . . . . . . 37
9 Processing body structure adhesive D 180 004 M2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.1 Preparing bonding surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
General InformationBody Repairs, General Body Repairs - Edition 10.2021
Contents i
10 Cold joining techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10.1 Rivets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10.2 Flow-drill screws (FDS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
10.3 Clinching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
11 Separating techniques in body welding; areas of application . . . . . . . . . . . . . . . . . . . . . . . . 63
11.1 Drilling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
11.2 Saw-cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
11.3 Grinding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
11.4 Milling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
12 Surface repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
12.1 Dent removal techniques for sheet steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
12.2 Dent removal procedures for aluminium panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
12.3 Processing metal and aluminium filler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
12.4 Processing unleaded tin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
12.5 Definition of “accurately aligned surface” / handover to paint shop . . . . . . . . . . . . . . . . . . 68
13 Performing straightening work on body structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
13.1 Straightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
13.2 Separating cuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
13.3 Body sub-parts and part sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
14 Corrosion protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
14.1 Corrosion protection for attachments and welded parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
14.2 Cavity sealing agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
15 Plastic repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
15.1 Repairing dents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
15.2 Repairing scratches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
15.3 Repairing cracks and tears (up to a length of 100 mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
15.4 Repairing holes (up to 30 mm diameter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
15.5 Plastic repairs (glass fibre materials) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
16 Glass repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
16.1 Repairing windscreens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
16.2 Special tools, workshop equipment, testers, measuring instruments and other items
required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
16.3 Description of repair work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
17 Thread repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
17.1 Thread repairs for safety-related components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
17.2 Repairing threads for attachment of subframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
17.3 Helicoil plus Twinsert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
General InformationBody Repairs, General Body Repairs - Edition 10.2021
ii Contents
1 Safety briefing/employee qualifica‐
tion
(AKAH000017; Edition 10.2021)
1.1 Qualification
The vehicle-specific training modules must be completed to en‐
sure that repair work can be performed correctly and reliably in
the workshop.
⇒ Rep. gr. 00; Safety briefing/employee qualification; Qualifica‐
tion
General InformationBody Repairs, General Body Repairs - Edition 10.2021
1. Safety briefing/employee qualification 1
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What's Included?
Lifetime Access
Fast Download Speeds
Offline Viewing
Access Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
$52.99
Models covered:
- Audi Q7 2.0L TFSI Quattro 8AT AWD (252 HP)
- Audi Q7 3.0L TFSI Quattro 8AT (333 HP)
- Audi Q7 3.0L TDI Quattro 8AT (218 HP)
- Audi Q7 3.0L TDI Quattro 8AT (272 HP)
This 2018 Audi Q7 Service & Repair Manual is a comprehensive guide used by Audi technicians and covers specific models and their variants. It is invaluable for both professional mechanics and DIY enthusiasts.
With this auto repair manual, you can take a Do-It-Yourself approach to fixing problems on your vehicle. It includes troubleshooting and replacement procedures provided by the manufacturer, along with step-by-step instructions, clear images, and exploded-view illustrations.
Regular maintenance is essential for the durability of your vehicle. This manual provides manufacturer-recommended troubleshooting charts and replacement procedures, helping you save on repairs and increase your vehicle's reliability.
No longer will you need thick and heavy manuals. This repair manual is the one-stop solution for weekend DIY’ers and professional mechanics regularly maintaining and repairing Audi vehicles!
The 2018 Audi Q7 Service & Repair Manual equips you with everything needed to rebuild the engine and replace every component, including wiring diagrams, torque specs, and exploded-view illustrations. It also features troubleshooting charts to quickly identify the cause of any issue based on specific symptoms.
In summary, this 2018 Audi Q7 Service & Repair Manual enables significant savings on repairs and maintenance, making it a worthwhile investment for both DIY enthusiasts and professional mechanics.
