Vehicle Inclination

Vehicle Inclination

There can be a wide variety of causes for a vehicle inclination. The causes usually lead to an entry in the fault memory of the control module or to a CC message in the instrument cluster.

Causes for vehicle inclination
Sensor causes
Checking of the sensor system according to instructions in the adjacent diagnosis test module.

Mechanical causes
- Sensor linkage (position, defective)
- Sensor holder (position)
- Securing clip of the sensor linkage (position)

Leakage as causes
- Leakage in the lines
- Leakage in the valve block
- Leakage on the spring strut

Electrical causes
- Water in the connector (corroded pins): With this fault, a creeping inclination begins, as the signal slowly drifts away.
- Short circuit in the 2-axle air suspension system (but this is normally stored by the control module as a fault and detected via diagnosis).

System-specific causes
- Opening a vehicle door during a change in the ride height (vehicle at a standstill) can cause a vehicle inclination.
- Rapid forces being exerted from the outside (attaching a trailer, fast loading or unloading) can prevent regulation.
- Tolerance bands with ignition on: +/-10 mm to height value from TIS.

NOTE: In the case of the front axle, the mean value of both heights counts.

- Tolerance bands with ignition off: +15 mm/-20 mm to height value from TIS.

NOTE: In the case of the front axle, the mean value of both heights counts.

- Temperature deactivation