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
WARNING
Inhalation of exhaust gas is hazardous to your
health. All exhaust gas contains carbon
monoxide (CO), and inhaling it can cause
unconsciousness and possible death.
Do not run the e ...