Standard Vehicle Height, Readapting

The air suspension system responds automatically to changes in the vehicle level and equals these out.

The vehicle level can change in the following situations:

• Trailer Mode
• Different load conditions; vehicle empty, vehicle partially or fully loaded

For versions with air suspension system the 'level sensor end stops' and the 'level sensor zero position' must be newly adapted, when:

• a level sensor is removed and reinstalled
• a level sensor was replaced
• An air spring strut on the front axle was replaced
• An air spring on the rear axle was replaced

Requirements

• The vehicle must be standing on a level surface.
• The vehicle may not be loaded.

Procedure 

-- Connect the Vehicle Diagnostic Tester.

-- Switch the ignition on.

-- Select and start the Diagnostic  operating mode.

-- Select the Test plan  tab.

-- Select the Select individual test  button and select the following tree structure consecutively:

• Chassis
• Suspension control
• 0001 - OBD-capable system
• 0074 - Drivetrain Control Module J775
• 0074 - Drivetrain Control Module functions
• 0074 - Basic setting
• 0074 - Basic setting complete

-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.

• The standard vehicle height is reached.

If the standard vehicle height is readapted, the following work must be performed:

• Adjust the headlamps. Refer to HEADLAMP, ADJUSTING .
• Driver Assistance Systems Front Camera, Calibrating. Refer to DRIVER ASSISTANCE SYSTEMS FRONT CAMERA, CALIBRATING .