See also:

High outside temperatures
If DEF heats up to over 122 °F (50 °C ) for extended periods, e.g. as a result of direct sunlight on the DEF reservoir, DEF can decompose. Ammonia vapors develop as a result. WARNING When o ...

The ultimate diesel: the V6 engine in the CLS 350 CDI
195 kW (265 hp) and 620 Nm of torque: the excellent diesel engine in the CLS 350 CDI BlueEFFICIENCY is now even more powerful and boasts a correspondingly superior performance. The Coupé ac ...

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 ...