Central Locking Motors

One side of the driver's door central locking motor is connected to the driver's door relay.

This gives a short 12 volt pulse for approx. 0.6 seconds to the driver's door central locking motor when the UNLOCK button on the remote control is pressed or the central locking button is used. (This is because the central locking relay gives a grounding control signal to the driver's door relay.)

This relay is also activated by the "second unlocking" using the keys in the front doors.

The central locking motors in the other doors and trunk/tailgate are connected in parallel and activated by "second unlocking" or when unlocking via the central locking switch. All central locking motors are activated by a short 12 volt impulse for approx. 0.6 seconds which the central locking relay transmits when the doors are locked.

The two wires on the central locking motor are grounded when the central locking motor is in standby mode to prevent them being activated accidentally.

The link arms on the central locking door motors are mechanically disengaged from the motors via a centrifugal clutch. Operating the link arm does not trip the motor.

This does not apply to the trunk/tailgate, where the link arm is mechanically connected to the motor.