Electric steering lock

After authentication by the CAS, the electrical steering interlock is supplied with current. Only now can the steering be unlocked or locked. An engine start is only permitted when the electrical steering interlock has been unlocked and secured.

Fig 1: Identifying Steering Column, Electric Steering Lock And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

The electric steering lock can only be locked when the vehicle is at a standstill and the engine is at standstill, too. If no unlocking procedure or locking procedure is carried out, the electric steering lock is secured and without current.