Downhill gradients

must On long and steep gradients, you must reduce the load on the brakes by shifting early to a lower gear. This allows you to take advantage of the engine braking effect and helps avoid overheating and excessive wear of the brakes.
When you take advantage of the engine braking effect, a drive wheel may not turn for some time, e.g. on a slippery road surface. This could cause damage to the drive train. This type of damage is not covered by the Mercedes-Benz warranty.

    See also:

    Maximum gradient-climbing capability
    For good road surface conditions, the maximum gradient-climbing capability is 100%, which corresponds to an approach/departure angle of 45°. Note that the vehicle's gradient-climbing capability ...

    Charging the battery
    WARNING Never charge a battery still installed in the vehicle unless a battery charger unit approved by Mercedes-Benz is being used. Gases may escape during charging and cause explosions ...

    M+S tires
    At temperatures below 45 °F (+7 °C), use winter tires or all-season tires. Both types of tire are identified by the M+S marking. Only winter tires bearing the snowflake symbol in addition t ...