Steering column lock (SCL), brief description
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Steering column lock (SCL), brief description
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Ignition switch, ISM (20)
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Column integration module, CIM (703)
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Steering column lock, SCL (708)
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The ignition is turned to OFF to lock the steering column. The column integration module (ICM) will then check that the speed is lower than 5 km/h. Besides the speed having to be below 5 km/h, the gear selector on cars with automatic transmission must be in position P. Once these conditions have been met, CIM will send signals to the ignition switch (ISM) to release the key, whereby the key can be turned to LOCK and then removed. It is at this point that the steering column will lock.
After inserting the key, the steering column lock (SCL) unlocks if the transponder is approved. If the car has been parked so that the steering column is straining hard on the lock bolt, it may be that the SCL is unable to unlock. The CIM will then send a message on the bus and the MIU will instruct the driver via its display (SID) to remove the key, turn the steering wheel and reinsert the key.
