NHTSA ID Number: 10122812
Manufacturer Communication Number: Quick Ref Spec B
TSB/Document Date: 2017-11-08
Summary
This document contains the quick reference specification book.
Wheel Alignment Data
Wheel Alignment Specified Values
Front suspension
Individual toe
Total toe
Camber (wheels straight
ahead) 1)
Maximum permissible
difference between both
sides
Toe differential angle at
20° steering angle 2)
Caster
Maximum permissible
difference between both
sides
Maximum steering angle
at inner wheel
88
Standard suspension
(UA0/UA4)
5′ ± 5′
10′ ± 10′
-30′ ± 30′
Sport suspension
(UA1/UA5/UA9/UA6)
5′ ± 5′
10′ ± 10′
-41′ ± 30′
30’
30’
1° 38′ ± 20′
1° 40′ ± 20′
7° 34′ ± 30′
30’
7° 47′± 30′
30’
41°
40°
Audi
A3 Quick Reference Specification Book
•
October 2012
Front suspension
Individual toe
Total toe
Camber (wheels straight
ahead) 1)
Maximum permissible
difference between both
sides
Toe differential angle at
20° steering angle 2)
Caster
Maximum permissible
difference between both
sides
Maximum steering angle
at inner wheel
Sport
suspension
(UB5/UA7)
Heavy duty
suspension
(UA2)
5′ ± 5′
10′ ± 10′
-46′ ± 30′
5′ ± 5′
10′ ± 10′
-14′ ± 30′
Sport
suspension
(UA3/UB2/
UB3)
5′ ± 5′
10′ ± 10′
-46′ ± 30′
30’
30’
30’
2° ± 20′
1° 38′ ± 20′
2° ± 20′
8° 07′ ± 30′
30’
7° 17′ ± 30′
30’
8° 07′ ± 30′
30’
39°
41°
39°
Camber corrections are not possible. It can only be corrected slightly by sliding the
subframe with the consoles.
2)
Depending on the manufacturer, the toe out angle difference can also be indicated
negatively in the alignment computer.
Rear suspension
Total toe
Individual toe
Maximum permissible
deviation from direction
of rotation
Camber
Maximum permissible
difference between both
sides
Rear suspension
Standard Suspension
UA0/UA4
25′ ± 10′
12,5′ ± 5′
20’
Sport Suspension
UA1/UA5/UA9/UA6
25′ ± 10′
12,5 ′± 5′
20’
-1° 20′ ± 30′
30’
-1° 20′ ± 30′
30’
Sport
Heavy duty
Sport
suspension suspension suspension
(UB5/UA7)
(UA2)
(UA3/UB2/
UB3)
25′ ± 10′
25′ ± 10′
25′ ± 10′
12,5 ′± 5′
12,5′ ± 5′
12,5′ ± 5′
20’
20’
20’
Total toe
Individual toe
Maximum permissible deviation
from direction of rotation
Camber
-1° 20′ ± 30′
Maximum permissible difference
30’
between both sides
Audi A3 Quick Reference Specification Book
•
-1° 20′ ± 30′
30’
October 2012
-1° 20′ ± 30′
30’
89
1)
Steering
Fastener Tightening Specifications
Component
Heat shield-to-steering gear bolt
Mounting bracket-to-lateral control arm for steering
column bolt
Servo motor-to-steering gear housing bolt
Steering column-to-mounting bracket bolt
Steering column-to-steering gear bolt
Nm
6
20
35
20
20 plus an
additional 90°
(¼ turn)
65
50 plus an
additional 90°
(¼ turn)
25
15
50
20
20
9
Steering gear housing pinion screw plug
Steering gear-to-subframe bolt 1)
Steering pinion-to-steering gear housing nut 1)
Steering pinion cover-to-steering gear housing bolt
Steering wheel-to-steering column bolt 1)
Strut-to-lateral control arm for steering column bolt
Strut-to-mounting bracket bolt
Strut-to-steering column bolt
Tie rod end to tie rod nut
- Generation I
- Generation II and III
Tie rod end to wheel bearing housing nut 1)
- All except S3 and RS3
55
50
20 plus an
additional 90°
(¼ turn)
100
110
100
- S3 2)
- RS3
Tie rod-to-steering gear
1)
2)
Replace fastener(s).
Tighten to 100 Nm, then loosen by 180° (½ turn) and tighten to 100 Nm again.
90
Audi A3 Quick Reference Specification Book
•
October 2012
Brake System
General, Technical Data
Vehicle Data Sticker PR Number Allocation
2 - Rear wheel brake
3 - Front wheel brake
Brake System
The vehicle data label can be found in the spare wheel
well as well as in the Maintenance booklet.
The correct combination of brake caliper/brake rotor/
brake pad can be determined using the PR-No.
Refer to the Electronic Parts Catalog (ETKA).
Audi A3 Quick Reference Specification Book
•
October 2012
91
Brake Master Cylinder and Brake Booster
Brake system
Dual-circuit brake system with diagonal distribution, Anti-lock Brake System
(ABS) with Electronic Brake Pressure Distribution (EBD). Depending on
equipment and construction, also with Electronic Differential Lock (EDL),
Anti-Slip Regulation (ASR), Electronic Stability Program (ESP).
Brake master cylinder
Diameter in mm
22.2
Brake booster
Diameter in inches
10
Function
Pneumatic
Assist factor
i=
5
Front axle
Production Relevant No. (PR. No.)
Front brake caliper
Pistons
Diameter
mm
Front brake disc
Diameter
mm
Brake disc thickness
mm
ventilated
Brake disc wear limit
mm
Pad thickness, new (not
mm
including backing plate)
Brake pad wear limit (not
mm
including backing plate)
1ZA
FN 3
54
1ZC/1ZM
FN 3
54
1ZD/1LJ
FN 3
54
312
312
312
25
25
25
22
14.8
22
14
22
14
2
2
2
Front axle
Production Relevant No. (PR. No.)
1ZE
1ZF
Front brake caliper
FN 3
FS III
Pistons
Front brake disc
Brake disc thickness
ventilated
Brake disc wear limit
Pad thickness, new (not
including backing plate)
Brake pad wear limit (not
including backing plate)
92
Diameter
mm
Diameter
mm
mm
54
54
1ZK/
1LK
FNRG-57
57
288
280
345
288
25
22
30
25
mm
mm
22
14
19
14
27
14.8
22
14
mm
2
2
2
2
Audi A3 Quick Reference Specification Book
•
1ZP
FN 3
54
October 2012
Rear wheel brake (FWD)
Production Relevant No.
(PR. No.)
Rear brake caliper
Rear brake disc
Brake disc
thickness
Brake disc wear
limit
Pad thickness,
new (not
including
backing plate)
Brake pad
wear limit
(not including
backing plate)
1KQ
1KU
C 38
38
1KE,
1KF
CII
41HR
41
38
CII
38HR
38
1KZ,
1KJ
CII
38HR
38
255
260
255
286
286
10
12
10
12
12
mm
8
10
8
10
10
mm
10.96
10.96
10.96
10.96
10.96
mm
2
2
2
2
2
1KF
1KJ
1KU
1KW
2EA
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TSB/Document ID: Quick Ref Spec B
Replacement Service Bulletin Number:
MFR Communication Date: 2012-11-01
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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