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:
Switching on DISTRONIC, storing andmaintaining the current speed
WARNING
The vehicle can be braked when DISTRONIC
is activated. For this reason, deactivate
DISTRONIC if the vehicle is to be set in motion
by other means (e.g. in a car wash or by
tow ...
Navigation announcements
Repeating navigation announcements
WARNING
Navigation announcements are intended to
direct you while driving without diverting your
attention from the road and driving.
Please always use th ...
Activation conditions
You can activate the HOLD function if:
• the vehicle is stationary.
• the driver's door is closed or your seat belt is fastened.
• the electric parking brake is released.
• the hood is clo ...