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A unique combination of driver-assistance systems
The 2011 CL-Class further enforces its position as an automotive masterwork and a technology platform with the most advanced assistance and protection systems. These highly perceptive assistants c ...

Activating/deactivating Bluetooth®
Select Vehicle in the main function bar by turning the COMAND controller and press to confirm. Select System by turning the COMAND controller and press to confirm. Select Blueto ...

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 ...