General notes
If you cannot lock or unlock the vehicle with the SmartKey, either the battery in the SmartKey is discharged, the SmartKey is faulty or the starter battery is discharged.
•► Check the battery in the SmartKey and replace it if necessary.
•► Unlock the driver's door using the mechanical key.
•► Lock the vehicle using the mechanical key.
•► Have the starter battery and the battery contacts checked at a qualified specialist workshop.
If the SmartKey is faulty, contact Roadside Assistance or a qualified specialist workshop.
See also:
Cruise control lever
Cruise control lever
1 To store the current speed or a higher speed
2 To store the current speed or a lower speed
3 To deactivate DISTRONIC PLUS
4 To store the current speed or to call up the la ...
Traction
Traction is the result of friction between the
tires and the road surface. ...
Driving with summer tires
At temperatures below 45 °F (+7 °C), the
elasticity of summer tires and therefore also
traction and braking capability are reduced
considerably — equip your vehicle with
M+S tires. Using summer ti ...