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
- Maintain a greater distance from the
vehicle in front than when driving without a
trailer.
- Avoid braking abruptly. If possible, brake
gently at first to allow the trailer to run on.
Then, ...
Restarting the tire pressure loss
warning system
Restart the tire pressure loss warning system
if you have:
- changed the tire pressure
- changed the wheels or tires
- mount new wheels or tires
– Before restarting, consult the Tire and
Loadi ...
Activating/deactivating Blind SpotAssist
Further information about Blind Spot Assist.
► Press
on the steering wheel
to select the Additional functions menu.
► Press the
button to select the
Blind Spot Assist function.
...
