Changing the battery

You require a CR 2025 3 V cell battery.

  • Take the mechanical key out of the SmartKey ().

  • Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until battery tray cover 1 opens. When doing so, do not hold cover 1 shut.
  • Remove battery tray cover 1.

  • Repeatedly tap the SmartKey against your palm until battery 3 falls out.
  • Insert the new battery with the positive terminal facing upwards. Use a lint-free cloth to do so.
  • Make sure that the surface of the battery is free from lint, grease and all other forms of contamination.
  • Insert the front tabs of battery tray cover 1 and then press to close it.
  • Insert the mechanical key into the SmartKey.
  • Check the function of all SmartKey buttons on the vehicle.
    See also:

    Activating/deactivating the trunk lid opening height restriction
    To activate/deactivate the trunk lid opening height restriction: select Vehicle in the main function bar by sliding and turning the COMAND controller and press to confirm. The main are ...

    2012 Mercedes-Benz CLS-Class Review by Carrie Kim
    As I approached the all-new 2012 Mercedes-Benz CLS-Class, I was filled with a mix of elation and bona-fide terror. It's similar to when you walk into a very nice home and the first thing you say t ...

    Preparing the cargo net
    The cargo net can be used in two different positions (behind the B-pillar or the C-pillar). • The brackets behind B-pillar : are required for the cargo compartment enlargement. The correspond ...