Level Control System Solenoid (N111)
Level Control System Solenoid (N111)
Special tools, testers and auxiliary items required
• Torque Wrench (V.A.G 1783)
Removing
• The level control system solenoid is located on the air supply unit.
- Remove the air supply unit. Refer to => [ Air Supply Unit ] Air Supply Unit.
• Make sure no dirt gets into the pressure air system.
• Clean the area before removing connecting pieces for the air pipe lines or other components of the pressured air system.
• Seal off any open air lines and connections in the pressure system immediately with plugs or cover them.
- Disconnect the connector - 3 - from the level control system solenoid - 2 -.
- Remove bolts - 1 -.
- Remove the level control system solenoid - 5 - with the O-rings - 1 and 4 -, the spring - 3 - and anchor - 2 -.
• The O-ring - 1 - may still be located inside the air supply unit housing.
Installing
Install in reverse order of removal. Note the following:
• The vehicle may be removed from the vehicle hoist only after the air springs have been filled again. Refer to => [ Raising and Lowering ] Description and Operation.
• Make sure the positioning pin on the air spring is installed correctly inside the body before filling the air suspension system. The air spring must be locked secure inside the wheel bearing housing at the same time. Refer to => [ Air Spring Installed Position ] Air Spring Overview.
• Always replace the O-rings.
- Coat the new O-rings - 1 and 4 - with the supplied grease.
• Note the anchor installation position - 2 -. The chamfer must point toward the spring - 3 -.
• Do not tilt the level control system solenoid when installing it and when tightening the bolts.
Tightening specifications, refer to => [ Air Supply Unit Overview ] Air Supply Unit Overview.
Tightening specifications, refer to => [ Air Line Connecting Pieces Tightening Specification ] Air Line Connecting Pieces Tightening Specification.
- Start the program on the vehicle diagnostic tester in "Guided Functions" and bleed the system.