NHTSA ID Number: 10203512
Manufacturer Communication Number: QRSB Audi A8 A8L
TSB/Document Date: 2021-11-15
Summary
Quick reference specification book.
bearing housing nut 1)
Power steering pressure line-to-pump bolt (without dynamic steering)
- 8-cylinder
20
-12-cylinder
9
174 Audi
A8/A8L/S8 Quick Reference Specification Book • September 2013
Servotronic solenoid valve
Steering column-to-central tube bolt
Steering gear-to-subframe bolt 1)
Steering intermediate shaft-to-steering column bolt 1)
Steering intermediate shaft-to-steering gear bolt 1)
Steering wheel-to-steering column bolt 1)
Tie rod-to-steering gear
Tie rod end-to-tie rod nut
Tie Rod End to Steering Gear ((Electro-Mechanical
Steering Gear)
Tie Rod End to Tie Rod Nut (Electro-Mechanical Steering
Gear)
Tie rod end-to-wheel bearing housing nut 1)
1)
Nm
40
20
20
40
23
23
25
40
25
9
40
38
4
4.5
9
3
20
80 plus an
additional 180°
(½ turn)
30
30
30 plus an
additional 90°
(¼ turn)
105
60
100
80
130
Replace fastener(s).
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 175
Suspension,
Wheels, Steering
Component
Power steering pressure line-to-pump union nut (with
dynamic steering)
Power steering pressure line-to-steering gear bolt
Power steering pressure line bracket-to-steering gear
bolt
Power steering pressure line union bolt
Power steering pump bracket-to-engine bolt (12-cylinder)
Power steering pump-to-bracket bolt (12-cylinder)
Power steering pump-to-engine bolt (8-cylinder)
Pressurized line union nut (8-cylinder)
Power Steering Pump to Bracket Bolt, 6-Cylinder
Pressurized Line, 6-Cylinder (Without Dynamic Steering)
Pressurized Line Union Nut, 6-Cylinder
Pressurized Line Union Nut, 6-Cylinder FSI
Protective boot bolt
Upper reservoir-to-body bolt
Pressure Line from the Power Steering Pump
to the Power Steering Gear (8-Cylinder)
Step
1
2
Component
Tighten bolts 3 and 5 in sequence
Tighten nut 2
Nm
9
9
176 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Step
1
2
3
Component
Tighten bolts 2 and 5 in sequence
Tighten bolts 3 and 6 in sequence
Tighten nut 4
Nm
9
20
9
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 177
Suspension,
Wheels, Steering
Pressure Line from the Power Steering Pump
to the Power Steering Gear (12-Cylinder)
Brake System
General, Technical Data
Vehicle Data Label
The brake system installed in a vehicle is indicated (Æ) on the
vehicle data label by the Production Relevant No. (PR No.).
178 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Technical Data
Front wheel brake
Brake
Production Relevant No. (PR. No.)
Brake disc ventilated
Dia.
mm
Brake disc thickness
mm
Brake disc wear limit
mm
Brake pad thickness with
mm
backing plate and dampening
sheet
Brake pad wear limit with
mm
backing plate and dampening
sheet
Rear wheel brake
Brake
Production Relevant No. (PR. No.)
Brake disc ventilated
Dia.
mm
Brake disc thickness
mm
Brake disc wear limit
mm
mm
Brake pad thickness
with backing plate and
dampening sheet
Brake pad wear limit
mm
with backing plate and
dampening sheet
Ceramic Front Brakes
Production Relevant No.
(PR. No.)
Brake disc ventilated
Brake disc thickness
Brake disc wear limit
Brake caliper, 6 piston
monoblock
(17”)
1LL
356
(18”)
1LJ
380
(19”)
1LW/ F4S
400
34
32
20.2
36
34
20.2
38
36
20.2
9
9
9
(17”)
1KW
330
(18”)
1KY/1KZ
356
(19”)
F4S
380
22
20
17.45
22
20
17.45
30
28
17.45
8
8
8
1LW
Dia.
mm
mm
Dia.
mm
400
38
The minimum dimension for the
brake rotor thickness is stamped
on the brake rotor cup. Use this
when checking for wear.
2 x 32/ 36/ 38
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 179
Brake system
Dual-circuit brake system with diagonal distribution and ABS, EBV, EDL,
ASR, ESP, ECD and electromechanical parking brake
Anti-lock Brake System (ABS)
Fastener Tightening Specifications
Component
ABS control module-to-ABS hydraulic unit bolt 1)
ABS wheel speed sensor-to-wheel bearing housing bolt
Brake line-to-hydraulic unit
- 5 mm brake lines
- 8 mm brake lines
Sensor electronics control module nut
1)
Nm
4.5
9
12
20
9
Replace fastener(s).
Mechanical Components
Fastener Tightening Specifications
Component
Brake disc cover plate-to-wheel bearing housing bolt
(PR-1LN and 1LP)
Brake disc-to-wheel hub bolt
- Front, PR-1LL and 1LM
- Front, PR-1LN and 1LP
- Rear
Brake pedal mounting pin bolt
Electromechanical parking brake control module nut
Electromechanical parking brake motor-to-rear caliper
bolt
Front brake line
- To brake hose
- To brake caliper
Front brake caliper guide pin (PR-1LL and 1LM)
Front brake caliper-to-wheel bearing housing bolt (PR1LN and 1LP)
Front brake carrier bolt (PR-1LL and 1LM) 1)
Gas pedal module-to-mounting bracket bolt
Mounting bracket nut
Mounting bracket-to-steering bolt
Rear brake caliper-to-guide pin bolt 1)
Rear brake carrier bolt 1)
Rear brake hose
- To brake pipe
- To brake caliper
Rear brake hose bracket bolt
Nm
10
9
5
5
8
10
12
12
19
55
196
196
8
8
20
35
100 plus an
additional 90°
(¼ turn)
12
19
10
180 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Component
Trim and balance spring-to-front brake caliper bolt (PR1LL and 1LM)
1)
Nm
22
Replace fastener(s).
Hydraulic Components
Component
Ball head-to-brake booster
Brake booster-to-mounting bracket bolt
Brake line
- To brake master cylinder
- To hydraulic unit (Ø 5 mm brake lines)
- To hydraulic unit (Ø 8 mm brake lines)
- To the brake hose
- To the brake caliper
Brake master cylinder-to-booster nut
Brake system vacuum pump bracket nut
Mounting bracket-to-steering bolt
Rear brake caliper-to-guide pin bolt 1
1)
Nm
30
23
24
12
20
12
19
49
9
20
35
Replace fastener(s).
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 181
Hydraulic Tightening Specifications
Body
Air Gap Body Dimensions – Coupe
Front Gap Dimensions
Component
A
B
C
D
E
F
G
H
I
mm
5.5
4.5
4.5
3.0
2.5
3.5
5.0
4.5
3.5
182 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Body
Rear Gap Dimensions
Component
A
B
C
D
E
mm
3.5
3.5
2.5
2.5
5.0
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 183
Body Exterior
Body Front Tightening Specifications
Component
Brace to body bolt
End plate to fender mount bolt
Fender to body bolt
Fender mount to fender flange bolt
Front fender bracket to fender bolt
Impact bar to lock carrier
Lock carrier to body bolt 1)
Lower fender bracket to fender bolt
Lower fender mount to fender bolt
Lower longitudinal member to bracket bolt
Plenum chamber cover bolt 3)
Plenum chamber - bulkhead to plenum chamber bolt
Tower brace bolt 2)
Underbody impact guard to bracket bolt
Upper longitudinal member to brace bolt
Upper longitudinal member to lock carrier cover bolt
1)
2)
3)
Nm
23
12
12
24
12
30
9
23
24
12
12
23
3
5
10
10
25
50
23
24
24
For bolt tightening clarification, refer to ElsaWeb, Lock Carrier with Attachments
Assembly Overview, items 3, 5, 6 and 9.
For bolt tightening clarification, refer to ElsaWeb, Tower Brace Overview, items 2, 3
and 4.
For bolt tightening clarification, refer to ElsaWeb, Plenum Chamber Overview, items
3 and 6.
Hood, Lids Tightening Specifications
Component
Hood
Catch to hood bolt
Catch to hood bolt (with pedestrian protection)
Front cover to fender bolt
Hood catch to hood bolt (with pedestrian protection)
Hood catch bolt (pedestrian protection catch)
Hood catch bracket bolt
Hood hinge to hood nut (without pedestrian protection)
Hood hinge to hood nut (with pedestrian protection)
Left plenum chamber cover to fender bolt
Nm
11
11
3
11
11
11
32
32
6
184 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Nm
10
2
6
10
18
6
8
14
6
34
2.5
23
34
23
23
20
20
1.5
2
2
Front Doors, Central Locking System
Tightening Specifications
Component
Front Doors
Bottom door hinge to body bolt
Bottom door hinge to door bolt
Door arrester to body bolt
Door arrester to door bolt
Door arrester to door bolt
Stud bolt to bottom door hinge bolt
Stud bolt to upper door hinge bolt
Upper door hinge to door bolt
Upper door hinge to body bolt
Door Components
Door lock to door bolt
Door lock cover bolt
Driver door closing assist motor to door bolt
Nm
32
45
33
8
25
30
30
45
32
19
3.5
4
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 185
Body
Component
Lock carrier to body bolt
Operating lever mounting bracket screw
Outer plenum chamber cover to fender bolt
Rear lid latch bolt
Pedestrian protection trigger 1 bolt/nut (with pedestrian
protection)
Rear Lid
Bracket to handle nut
Cover to handle bolt
Cover to right water drain channel bolt
Handle to rear lid nut
Hood hinge bolt
Rear fender to lamp assembly screw
Rear lid catch to body nut
Rear lid hinge to real lid bolt/nut
Rear lid latch to rear lid nut
Rear lid motor to body
- Bolt
- Nut
Rear lid motor to rear fender nut
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TSB/Document ID: QRSB Audi A8 A8L
Replacement Service Bulletin Number:
MFR Communication Date: 2013-09-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
MFR Component System:
MFR Component Subsystem:
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