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:

    Driving tips
    Observe the information on ESP® trailer stabilization (Y page 64) and on pulling away with a trailer. The maximum permissible speed for vehicle/ trailer combinations depends on the type of ...

    EXTERIOR
    With signature bright-eyed circular headlights, the E350 coupe appears alert and ready for the day. The low window height added to the E350's sleek appearance. Not to be mistaken for any other bra ...

    Warning displays
    The warning displays show the distance between the sensors and the obstacle. The warning display for the front area is located on the dashboard above the center air vents. The warning display f ...