2007 Mercedes R-Class Owner's Manual - Page 356

Operation Driving instructions Road salts and chemicals can adversely affect braking efficiency. Increased pedal force may become necessary to produce the normal brake effect. Depressing the brake pedal periodically when traveling at length on salt-strewn roads can bring road-salt-impaired braking efficiency back to normal. If the vehicle is parked after being driven on salt-treated roads, the braking efficiency should be tested as soon as possible after driving is resumed. Warning! Standing water To prevent water from entering the passenger compartment or the engine compartment if you must drive through standing water, keep in mind that the maximum depth of the water may not exceed 10 in (25 cm) you must drive slowly Warning! G If the vehicle becomes stuck in snow, make sure that snow is kept clear of the exhaust pipe and from around the vehicle with the engine running. Otherwise, deadly carbon monoxide (CO) gases may enter vehicle interior resulting in unconsciousness and death. To assure sufficient fresh air ventilation, open a window slightly on the side of the vehicle not facing the wind. i Vehicles with AIRMATIC* (except R 63 AMG): If you have selected the raised level ( page 289) before driving through standing water, the maximum water depth is 12 in (30 cm). G Warning! Make sure not to endanger any other road users when carrying out these braking maneuvers. G The outside temperature indicator is not designed to serve as an ice-warning device and is therefore unsuitable for that purpose. Indicated temperatures just above the freezing point do not guarantee that the road surface is free of ice. i R 63 AMG with AIRMATIC*: If you have selected the highway level ( page 289) with the ADS in SPORT mode ( page 286) before driving through standing water, the maximum water depth is 7.5 in (19 cm). If you have selected the raised level ( page 289) before driving through standing water, the maximum water depth is 9 in (23 cm). For more information, see "Winter driving" ( page 405). 355