Audi A4: Underbody Trim Panel
Audi A4 (B9) 2016-2025 Service Manual / Body / Body Exterior / Exterior Equipment / Underbody Trim Panel
Overview - Underbody Trim Panels
1 - Nut
- 2 Nm
- Quantity: 2
2 - Front Underbody Panel
- Removing and installing. Refer to → Chapter "Underbody Trim Panel, Removing and Installing, Front".
3 - Impact Protector
4 - Bolt
- 2 Nm
5 - Center Underbody Trim Panel
- Removing and installing. Refer to → Chapter "Underbody Trim Panel, Removing and Installing, Center".
6 - Rear Underbody Trim Panel
- Removing and installing. Refer to → Chapter "Underbody Trim Panel, Removing and Installing, Rear".
7 - Nut
- 2 Nm
- Quantity: 2
8 - Bolt
- 2 Nm
- Quantity: 3
9 - Side Underbody Trim Panel
- Removing and installing. Refer to → Chapter "Underbody Trim Panel, Removing and Installing, Side".
10 - Bracket
- For the rear underbody trim panel
11 - Nut
- 2 Nm
12 - Bolt
- 2 Nm
13 - Bolt
- 2 Nm
- Quantity: 2
14 - Nut
- 2 Nm
- With fastener
- Quantity: 2
15 - Nut
- 2 Nm
- With fastener
- Quantity: 11
Overview - Underbody Bracing
1 - Bolt
- 55 Nm
- Quantity: 4
2 - Bolt
- 50 Nm + 90º
- Replace after removing
- Quantity: 5
3 - Right Diagonal Brace
- Removing and installing. Refer to → Chapter "Diagonal Braces, Removing and Installing".
4 - Left Diagonal Brace
- Removing and installing. Refer to → Chapter "Diagonal Braces, Removing and Installing".
5 - Bolt
- 50 Nm + 90º
- Replace after removing
- Quantity: 5
6 - Tunnel Brace
- Removing and installing. Refer to → Chapter "Tunnel Brace, Removing and Installing".
READ NEXT:
Underbody Trim Panels, Removing and Installing
Underbody Trim Panel, Removing and Installing, Front
Removing
- Remove the nuts -arrows-.
- Remove the front underbody trim panel -2-
from the center underbody trim panel -1-.
Installing
Roof Molding/Roof Railing
Overview - Roof Railing
1 -
Nut
Quantity: 4
Insert with locking fluid. Refer to the Parts Catalog.
Tightening specification and sequence. Refer to
→ Fig. "Roof Railing - Tightening
Exterior Rearview Mirror
Overview - Exterior Rearview Mirror
1 -
Mirror Trim
2 -
Bolt
1.5 Nm
3 -
Mirror Adjusting Unit
Removing and installing. Refer to
→ Chapter "Mirror Adjusting
SEE MORE:
Predictive control
Applies to: vehicles with Audi adaptive cruise control and efficiency
assist
With predictive control, efficiency assist adapts
the set speed in adaptive cruise control (1), fig. 108 based on detected speed
limits and the upcoming route. Once the system
no longer detects any incidents ahead, adaptive
Upper Control Arm, Removing and Installing
Special tools and workshop equipment required
Vehicle Diagnostic Tester
Torque Wrench 1331 5-50Nm -VAG1331-
Torque Wrench 1331 Insert - Ring Wrench - 16mm -VAG1331/12-,
not illustrated
Torque Wrench 1332 40-200Nm -VAG1332-
Engine and Gearbox Jack -VAS6931-
Engine/Gearbox Jack Adapter - Wheel
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