Fault Messages
The air suspension has two methods which it can use to inform the driver of a fault in the air suspension system; the air suspension control switch indicators and the instrument cluster message center.
If the CHCM suffers a major failure and there is no air suspension control, all the control switch indicators will remain unlit.
If a fault occurs and the control module can determine the ride height and the vehicle is not above on-road height, the driver will be notified via a message in the message center. If the control module cannot determine the height of the vehicle, or the vehicle is above Normal height and cannot be lowered, a message is displayed and accompanied with a maximum speed message.
If a fault is detected within the DSC (dynamic stability control) the message 'SUSPENSION LOWERED FOR SAFETY' and a chime will be emitted. This is not a fault with the air suspension system. The fault should be investigated and rectified as soon as possible.
For additional information, refer to: INSTRUMENT CLUSTER .