Parking Lock

The parking lock locks the transmission output shaft. The vehicle is prevented from rolling unexpectedly. The parking lock is designed to provide a reliable brake on gradients up to 32 %.

1. E53, E60, E61, E63, E64, E87, E90, E91  When the vehicle is stationary, the parking lock is engaged purely mechanically via the selector lever (Bowden cable from selector lever to mechatronics module).
2. E65, E66  With the electric version of the parking lock, the parking lock is applied and electrically secured via a mechanical spring system in the transmission.

The parking lock is activated under the following conditions:

• Pressure on the button on the gear selector lever and road-speed signal less than 2 km/h.
• Remote control removed from the insert compartment and road-speed signal 0 km/h.
• Engine ON

  and

  Transmission position "D", "N" or "R"

  and

  Driver's door open

  and

  Driver's seat not occupied, (road-speed signal less than 2 km/h).

The parking lock is only released when the engine is ON. Reason: Only when the engine is ON is there enough hydraulic pressure to open the parking lock (mechanical emergency release possible).

If the parking brake (EMF = electromechanical parking brake) fails, the parking lock can still be applied.

Example: A fault in the system prevents the parking brake from being moved from "Hold" to "Park". In this event, the EGS control unit will apply the parking lock after performing a plausibility check.

The locking conditions are as follows:

• Selector lever in position "N"
• Speed 0 km/h
• Engine OFF and ignition OFF