Low outside temperatures

DEF freezes at a temperature of approximately 12 °F (–11 °C). The vehicle is equipped with a DEF preheating system when it leaves the factory. Winter operation is therefore also guaranteed at temperatures below 12 °F (–11 °C).

    See also:

    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 discharg ...

    Brakes: with Hill-Start Assist and brake drying function
    With the ADAPTIVE BRAKE, the new CLS offers an innovative braking system incorporating additional assistance functions for even greater comfort and safety. One example of this is the practical HOL ...

    Exhaust check
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