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Automatic Locking When Driving

Fig 1: View Of Automatic Locking When Driving
GLL151636Courtesy of VOLVO CARS CORPORATION

Whether the automatic locking function is activated on delivery or not is market dependent. If this function is activated, the side doors lock when the speed exceeds 7 km/h (5 mph). All the doors must be closed, the engine running and the vehicle moving forward. The only exception is the tailgate/trunk lid which can be open. Information about whether the engine is running or not is transmitted by the engine control module (ECM) to the central electronic module (CEM). Indication about whether the engine is driving the car forwards is different in cars with automatic transmissions and manual transmissions. In vehicles with automatic transmissions, the position of the gear selector is received from the transmission control module (TCM). The gear selector must not be in the park (P) or neutral (N) position for automatic locking to function. In vehicles with manual transmissions, the brake control module (BCM) transmits information about vehicle speed to the central electronic module (CEM). The accelerator pedal (AP) must be partly pressed as well for automatic locking to take place.

The door can be unlocked again as normal with the central locking buttons.