Child safety

Child safety locks

Updated 7/23/2018

The child safety locks prevent children from being able to open a rear door from the inside. There is an electric* and a manual lock.

Electric activation/deactivation*

The electric child safety locks can be activated/deactivated in all ignition positions higher than 0. Activation/deactivation can be performed up to 2 minutes after switching off the engine, provided that no door is opened. See the section "Ignition position" for more information.

P5-1507 Door switch electric child lock

Button for electric activation/deactivation.

Start the engine or choose an ignition position higher than 0.

Press the button in the driver's door control panel.

The driver display shows the message Rear child lockActivated and the button's lamp illuminates - the locks are active.

When the electric child safety lock is active then the rear:

  • windows can only be opened with the driver's door control panel
  • doors cannot be opened from inside.

To deactivate the locks:

Press the button in the driver's door control panel.

The driver display shows the message Rear child lockDeactivated and the button's lamp goes out - the locks are deactivated.

The current setting is stored when the engine is switched off - if the child safety locks are activated at engine shutdown, the function will remain activated the next time the engine is started.




P5-15w19 - Childlock ON

Rear child lock Activated

Child safety locks are activated.

P5-15w19 - Childlock OFF

Rear child lock Deactivated

Child safety locks are deactivated.

Manual activation/deactivation

P5-1507 Door with manual child lock with key blade

Manual child safety locks. Not to be mixed up with manual door locks.

Use the remote control key's detachable key blade to turn the knob. For more information, see the section "Detachable key blade".

The door is blocked against opening from the inside.
The door can be opened from both the outside and the inside.


  • A door's knob control only blocks that particular door - not both rear doors simultaneously.
  • Cars with an electric child safety lock do not have a manual child lock.

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