Audi A4: Noise Insulation
Overview - Noise Insulation

1 -
Quick Release
2 -
Plug/Rubber Grommet
- Plug for vehicles without parking heater
- Rubber grommet for parking heater exhaust pipe
3 -
Bolt
4 -
Rear Noise Insulation
- Removing and installing. Refer to
→ Chapter "Noise Insulation, Removing and Installing, Rear".
5 -
Air Guide
- Removing and installing. Refer to
→ Chapter "Noise Insulation, Removing and Installing, Rear".
6 -
Expanding Rivet
7 -
Quick Release
- Without fastener
- Quantity: 5
8 -
Front Noise Insulation
- There are different versions. Refer to the Parts Catalog.
- Removing and installing. Refer to
→ Chapter "Noise Insulation, Removing and Installing, Front".
9 -
Expanding Rivet
10 -
Fastener
11 -
Quick Release
12 -
Bolt
Noise Insulation, Removing and Installing
Noise Insulation, Removing and Installing, Front
Removing
- Remove the bolts -1-.
- Loosen the quick-release fasteners -2, 4
and 5-.
- Remove the front noise insulation -3-.

Installing
Install in reverse order of removal and note the following:
Vehicles with Parking Heater
- The rubber grommet -A- must rest
without tension in the noise insulation
-B-.
- The exhaust pipe -C- must be flush
with the rubber grommet or it can protrude out slightly.
- The exhaust pipe opening must be perpendicular to the noise
insulation and must not point in the direction of travel
-arrow-.

Tightening Specifications
- Refer to
→ Chapter "Overview - Noise Insulation"
Noise Insulation, Removing and Installing, Rear
Removing
- Remove the expanding rivets -arrows-.
- Disengage the quick releases -2 and 3-.
- Remove the rear noise insulation -4-
and air guide -1-.

Installing
Install in reverse order of removal.
READ NEXT:
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 In
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
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
SEE MORE:
Telephone settings
Applies to: vehicles with telephone
Applies to: MMI: Select on the home screen:
PHONE > .
The following options may be possible, depending
on your mobile device:
Decline with text message
Edit voicemail number
Switching between two mobile devices
Requirement: phone 1 an
Component Location Overview - Injection System
Component Location Overview - Engine Compartment
1 - Oxygen Sensor after Catalytic Converter -G130- with Heater for
Oxygen Sensor 1 after Catalytic Converter -Z29-
Component location. Refer to
→ Fig. "Component Location Oxygen Senso