Steering Lock Interlock

Position/Task/Design/Function

Component Illustration:

Position
The steering lock interlock connects the parking lock in the transmission to the ignition lock via the brake pedal.

Task
To prevent the driver removing the ignition key if the parking lock is not engaged.

Design
The locking pawl (39) of the parking lock is connected to the release lever (56) at the brake pedal by a link rod and a cable (54). It is also connected to the locking valve (60) in the adapter housing (63) via a cable (53). The locking valve (60) is blocked from the locking cam (61) in the steering lock (59).

The steering lock interlock has the same design as the parking lock interlock and works with reciprocal action.

Function
The locking pawl (39) is positioned on the exterior contour of the detent plate (38) if the parking lock is not engaged and if the brake pedal is not depressed.

The cables (53, 54) hold the locking valve (60) in its position in front of the locking cam (61) against the force of the pressure spring. Therefore, the ignition key cannot be turned to the "0" position. In selector lever position "P" and with the brake pedal in the rest position, the force of the return spring (57) can pull the locking pawl (39) under the stop at the detent plate (38) and the pressure spring (62) simultaneously pulls the locking valve (60) away from the locking cam (61).

The ignition key can now be turned to the "0" position and removed from the ignition.

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