Steering Column Lock

The steering column lock is used to deter vehicle theft by electronically locking the steering column. This prevents the steering wheel from being rotated to turn the front wheels.

The steering column unlocks when:

• the passive entry feature is used to open the driver door.
• the driver door is opened after unlocking the vehicle with a RKE transmitter.
• the START/STOP button is pressed and a valid programmed passive key is detected.
• the remote start feature is activated.

The steering column locks after:

• the ignition is turned off and 45 seconds have elapsed since the delayed accessory feature has turned off.
• 45 seconds have elapsed since the remote feature turned off the vehicle.

The BCM controls the voltage provided to the steering column lock module using a relay (located in the BJB) and communicates with it over a LIN. The BCM monitors inputs from various systems to determine when to send a command to lock or unlock the steering column. The steering column lock module locks and unlocks the steering column as directed by commands received from the BCM.

If the BCM detects a fault from the steering column lock module or the LIN, the BCM prevents the vehicle from starting. The BCM does not provide power to the steering column lock module when the vehicle is moving or the engine is running.