Switch the automatic door lock off and on

  • The smart 451 has two functions related to this topic. For a better overview, I'll first show both before I explain how to turn it off.


    Auto-relock function

    The vehicle will lock again automatically within approximately 60 seconds of unlocking with the key if neither the driver’s nor passenger door is opened.


    Drive lock function

    The vehicle locks automatically when the ignition is switched on and the wheels are turning at vehicle speeds of approximately 8 mph (14 km/h) or more. The drive lock function is enabled at the factory.


    Switching on: Switch off the ignition.

    Press the central locking switch and the unlocking button on the key simultaneously. An acoustic signal sounds. The drive lock function is switched on.


    Switching off: Switch off the ignition.

    Press the central unlocking switch and the locking button on the key simultaneously. An acoustic signal sounds. The drive lock function is switched off.

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