2009 Mercedes CLS-Class Owner's Manual - Page 157

Controls in detail Driving systems The vehicle chassis ride height is raised or lowered according to the selected level setting and to the vehicle speed. At a speed exceeding approximately 68 mph (110 km/h) with normal level set or exceeding 75 mph (120 km/h) with raised level set, Vehicle level when stationary Normal Normal Raised Indicator lamp (Y page 156) Lamp off Lamp off Lamp on the ride height is reduced automatically. With decreasing speed, the ride height is again raised to the normal level. Select the raised level only when required by current driving conditions. Otherwise, the handling may be impaired and the fuel consumption may increase. i These height adjustment are so small that you may not notice any change. The following vehicle level settings can be selected when the vehicle is stationary and the engine is running: Suspension tuning Use for Ride height increase over normal Automatic lowering Comfort Sport 1 or 2 Comfort For driving on normal None roads For driving on normal None roads For driving on rough roads or with snow chains For driving on rough roads or with snow chains Approx.. 0.8 in (20 mm) Approx.. 0.8 in (20 mm) Max. approx. 0.4 in (10 mm) Max. approx. 0.6 in (15 mm) Max. approx. 1.2 in (30 mm) Max. approx. 1.4 in (35 mm) Raised Lamp on Sport 1 or 2 Z 155