System-specific causes (no faults)
WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.
- The control has various modes. Different control limits apply in the different modes. The following modes can be applied when the vehicle is at a standstill on a level surface:
- Terminal R/terminal 15 on or flap change (open door) => pre-mode: Vehicle is not raised until mean value HA < -59 mm; vehicle is lowered at > 9 mm RL or RR and mean value HA > 0 mm
- Engine running, vveh =0 km/h => normal mode: Vehicle is raised < -9 mm RL or RR; vehicle is lowered > 9 mm RL or RR; (remark.: If the vehicle was moved, a control procedure is blocked until the next flap change when the vehicle subsequently stops).
- Engine was running, vehicle is stationary, engine is off, after a counter expires => post -mode: Vehicle is raised < -59 mm RL or RR; vehicle is lowered > 6 mm RL or RR
- After the pre- or post-counter expires => sleep mode: no control
- Due to the control limits, small inclinations are not corrected. e. g. a maximum inclination (RL to RR) of up to 18 mm is theoretically possible in normal mode.
- Vehicle inclination can only be checked on absolutely level and horizontal ground. For example, if the one wheel of the vehicle is on the curb, the resulting inclination is not corrected.
- Active wheel relief mode: To relieve a depressurized tire on the rear axle, the vehicle is inclined using the air suspension. The vehicle is inclined beginning at "Engine running". This mode is linked to the type pressure monitor and is not closed until the tire pressure monitor ceases to sense a tire pressure loss and the engine is running.