SmartKey functions

See also:

Coolant
Important safety notes The coolant is a mixture of water and antifreeze/corrosion inhibitor. It performs the following tasks: corrosion protection antifreeze protection raising the boiling ...

Exterior
Derived from a coupe study that appeared at the 2003 Frankfurt Motor Show in Germany, the four-door CLS-Class features a high belt line and short side glass. A distinctive body crease rises from t ...

Engine number
1 Emission control information plate, including the certification of both federal and Californian emissions standards 2 Engine number (stamped into the crankcase) 3 VIN (on the lower edg ...