Problems with the SmartKey

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Transfer case
General notes The vehicle has permanent all-wheel drive. Power is always transmitted to both axles. For further information on driving off-road, see . Shift ranges WARNING If you do not wai ...

AMG vehicles with rear axle locking differential
To improve the protection of the differential, change the oil after a break-in distance of 2,000 miles (3,000 km). This oil change will lengthen the service life of the differential. Have the oi ...

Headlamps fogged up on the inside
The headlamps may fog up on the inside if there is high atmospheric humidity. ■ Switch on the lights and drive off. The level of moisture diminishes, depending on the length of the journey ...