LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 2002 >> V70 XC >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Alarm System, Control Modules, Engine Management Systems - Design And Function >> Central Locking (2005-2007) >> Function >> Child-proof locks
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Child-proof locks

Fig 1: Child-Proof Locks Communication Diagram
GLL148513Courtesy of VOLVO CARS OF NORTH AMERICA.

The function for child safety locks involves an extra lock motor in each rear lock unit. The function is only available for the rear doors. The lock motor disconnects the inner door handle and the lock button on each rear door and this means that the door cannot be opened from the inside. However, the door can still be opened from the outside.

The function is activated with a switch on the dashboard environment panel for climate control when the ignition key is position I or II. The switch has an alternating function which connects or disconnects the function with every other press. The switch for activation has an integral LED to indicate the activated function. A message is also displayed in the text window of the driver information module (DIM).

The child safety lock status is saved as a setting in the rear electronic module (REM) and is also valid after the ignition has been switched off and then on again. In order to deactivate the function the ignition key must be turned to position I or II and the switch on the dashboard environment panel pressed in so that the LED goes out. A message will then be displayed in the text window of the driver information module (DIM). The rear electronic module (REM) receives a signal from the lock units in the rear doors that the lock motor is in the locked position.

If the indication from the lock motors is incorrect or fails to appear, or if activation or deactivation is not successful, then a diagnostic trouble code (DTC) is generated in the rear electronic module (REM). A message will also be displayed in the driver information module (DIM).