Emergency release
A mechanical emergency release facility is provided in order to be able to release the parking brake in the event of the electromechanical actuator unit failing or insufficient power supply.
NOTE:
Caution: secure vehicle to prevent it rolling before operating the emergency release!
NOTE:
After a power supply failure, it may still not be possible to move the vehicle even after releasing the brake with the emergency release facility. The automatic transmission parking lock may still be engaged.
In that case, the parking brake must first be released with the emergency release facility. Then the automatic transmission parking lock must be released using the emergency release facility. To do so, the appropriate tool must remain engaged in the parking lock emergency release.
In that case, the parking brake must first be released with the emergency release facility. Then the automatic transmission parking lock must be released using the emergency release facility. To do so, the appropriate tool must remain engaged in the parking lock emergency release.
The parking brake emergency release status is indicated on the instrument cluster.
The parking brake indicator lamp shows yellow.
The driver is shown the same indication (together with a check control message) if the parking brake has a fault.
When the parking brake is to be used again after an emergency release, that can not be done mechanically but only electrically. It requires pushing in the parking brake button once as if to release the parking brake. The familiar conditions for releasing the parking brake must also be met.