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:
Trailer load/noseweight
The trailer load/noseweight affects the gross
weight of the vehicle. If a trailer is attached,
the trailer load/noseweight is included in the
load along with occupants and luggage. The
trailer ...
Transfer case
The vehicle has permanent 4-wheel drive
(4MATIC). Power is always transmitted to
both axles.
Performance tests may only be carried
out on a 2-axle dynamometer. The brake
system or transfer ca ...
Problems with the occupant classification system
Problem
Possible causes/consequences and
Solutions
The
indicator lamp illuminates and remains illuminated.
The person on the front-passenger seat:
• has the weight of ...