Level Control System Overview
Suspension System
Level Control System Overview
• During Model Year (MY) 2004, the level control system control module
-7L6 907 553 A /B- (200 Hz) was replaced by the level control system control
module -7L0 907 553 F/*- (800 Hz).
• As of the implementation of new control modules, the wheel speed sensors
are no longer installed, and the vehicle level sensors were adapted.
• If a 800 Hz control module instead of 200 Hz control module is installed,
the vehicle level sensors must be replaced. The wheel speed sensors remain
in the vehicle for the purpose of sealing the line.
1 Air supply unit with solenoid valve block
• With level control system compressor motor -V66-
• With level control pump temperature sensor -G290-
• With level control pressure sensor -G291-
• Component location: right front, on underbody. => [ Air Supply Unit with Solenoid Valve Block Assembly Overview ] See Image Below.
2 Rear right air spring shock absorber
• With right rear dampening adjustment valve -N339-
3 Right rear level control system sensor -G77-
• Component location: On rear subframe. => [ Rear Level Control System Sensors ] See Image Below.
4 Level control system control module -J197-
• Component location: In luggage compartment behind flap of right side wall trim => [ Level Control System Control Module ] See Image Below.
5 Rear body acceleration sensor -G343-
• Component location: In luggage compartment beneath right trim in vehicle floor, underneath spare wheel cover.
6 Left rear level control system sensor -G76-
• Component location: On rear subframe. => [ Rear Level Control System Sensors ] See Image Below.
7 Rear pressure reservoir
• Component location: At left in luggage compartment, underneath spare wheel cover.
8 Rear left air spring shock absorber
• With left rear dampening adjustment valve -N338-
Level Control System Overview continued
9 - Front pressure reservoir
• Component location: Left front, on underbody.
10 - Left front level control system sensor -G78-
• Component location: On mounting bracket for left front air spring shock absorber. => [ Front Level Control System Sensors ] See Image Below.
11 - Left front wheel acceleration sensor -G337-
• Component location: On left front air spring shock absorber, opposite to direction of travel
12 - Left front air spring shock absorber
• With left front dampening adjustment valve -N336-
13 - Left front body acceleration sensor -G341-
• Component location: In left upper wheel housing.
14 - Right front body acceleration sensor -G342-
• Component location: In right upper wheel housing.
15 - Right front wheel acceleration sensor -G338-
• Component location: On right front air spring shock absorber, opposite to direction of travel.
16 - Right front air spring shock absorber
• With right front dampening adjustment valve -N337-
17 - Right front level control sensor -G289-
• Component location: On mounting bracket for right front air spring shock absorber. => [ Front Level Control System Sensors ] See Image Below.
Air Supply Unit with Solenoid Valve
Block Assembly Overview
1 - Solenoid valve block
- With level control system compressor motor -V66-
- With level control pump temperature sensor -G290-
The following is integrated with level control pump temperature sensor
-G290-
• Level Control System Solenoid -N111-
- With level control pressure sensor -G291-
The following are integrated with level control temperature sensor
-G291-
• Left Front Suspension Strut Valve -N148-
• Right Front Suspension Strut Valve -N149-
• Left Rear Suspension Strut Valve -N150-
• Right Rear Suspension Strut Valve -N151-
• Level Control Accumulator Valve -N311-
5 - Air supply unit
Rear Level Control System Sensors
5 - Left rear level control system sensor -G76- and Right rear level control system sensor -G77- Component location: On rear subframe.
Front Level Control System Sensors
4 - Left front level control system sensor -G78- and Right front level control sensor -G289- Component location: On mounting bracket for front air spring shock absorbers.
Level Control System Control Module
1 - Level control system control module -J197- is installed in luggage compartment behind flap of right side wall trim.