Rear suspension (Operation): Description and operation (page 3 of 3)

Pressing the lower button will signal the SLABS ECU, via the RF receiver and the BCU, to energise the exhaust valve and air control valves. The SLS will lower up to 60 mm (2.36 in) below normal ride height if the button is held. If the button is released the SLS will stop at that point.

Pressing the raise button will signal the SLABS ECU, via the RF receiver and the BCU, to start the compressor and energise the exhaust valve and air control valves. The SLS will raise to normal ride height if the button is held. If the button is released the SLS will stop at that point.

When raising or lowering the SLS using the remote handset, the SLS warning lamp will flash and the audible warning will sound when the system is operating. When the SLS is fully lowered the warning lamp will stay illuminated. The SLS will reset to normal ride height if the vehicle speed exceeds 3 mph (5 km/h) for 10 seconds when the SLS is lowered.

Transportation mode Transportation mode must be used when the vehicle is transported on a trailer and secured by the chassis. The transportation mode can only be enabled and disabled with TestBook.

The transportation mode lowers the rear suspension onto the bump stops with the engine not running. When the suspension is in transportation mode, the SLS warning lamp is continuously illuminated when the ignition is in position II.

When the engine is started in transportation mode, the SLS system will raise the rear suspension until a gap of 25 mm (1 in.) exists between the bump stop and the axle. The SLS warning lamp will flash continuously while the SLS system is raising the suspension. When the gap between the bump stop and the axle is achieved, the warning lamp will illuminate continuously.

When TestBook is used to disable the transportation mode, the rear suspension will raise to normal ride height when the engine is running.