Checking the battery
•► Press the 
or
button.
The battery is working properly if battery check lamp 1 lights up briefly If battery check lamp 1 does not light up briefly during the test, the battery is discharged.
•► Changing the battery
You can obtain the battery at a qualified specialist workshop.
i If the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the or
button locks or
unlocks the vehicle.
See also:
Driving with summer tires
At temperatures below 45 ‡ (+7 †), the elasticity of summer tires and therefore
also traction and braking capability are reduced considerably — equip your vehicle
with M+S tires. Using summer tire ...
Distance warning function (vehicleswith DISTRONIC)
This function provides a warning from a speed
of approximately 20 mph(30 km/h), if:
• for a period of several seconds, the
distance to the vehicle in front is too short
for the speed at which you ...
Hiding a service message
– Press the
or button on the
steering wheel. ...