With rear level control, the car maintains the same height at the rear regardless of load. Level control can also occur even after the car has been parked.
Shock absorption (Four-C)
On a car equipped with Four-C the shock absorption is adapted according to the drive mode selected and the speed of the car. Shock absorption is normally set for optimum comfort and is regulated continuously depending on the road surface, the car's acceleration, braking and cornering.
During transport
During transport of the car on a ferry, train or truck, the car must be lashed around the tyres and not around other parts of the chassis. Changes in the air suspension may occur during transport, which could affect the lashing negatively.
Symbols and messages
If a fault arises with level control, a message is shown in the driver display.
| Symbol | Message | Specification |
|---|---|---|
 | Suspension Deactivated by user | The active suspension has been switched off manually by the user. |
| Suspension Temporarily reduced performance | The active suspension's performance has been temporarily reduced due to extensive system use. |
 | Suspension Service required | A fault has occurred. Visit a workshop1 as soon as possible. |
 | Suspension failure Stop safely | A critical fault has occurred. Stop safely, have the car towed to a workshop1. |
| Suspension Slow down Car too high | A fault has occurred. If the message appears whilst driving, contact a workshop1. |
 | Suspension Auto adjusting car level | Level control of the car's rear axle to target height in progress. |