2009 Mercedes SLR McLaren Owner's Manual - Page 194

Controls in detail Automatic climate control Air conditioning The air conditioning (cooling) function is operational when the engine is running and cools the vehicle interior down to the selected temperature. In addition, the cooling function dehumidifies the air in the vehicle interior, thus preventing the windows from fogging up. Warning! Deactivating It is possible to deactivate the cooling function of the automatic climate control system. The air in the vehicle will then no longer be cooled or dehumidified. Press ± button ( page 186). The indicator lamp on the ± button comes on. The cooling function switches off after a short delay. Activating Moist air can fog up the windows. You can dehumidify the air with the air conditioning. Press ± button again ( page 186). The indicator lamp on the ± button goes out. The air conditioning uses the refrigerant R134a. This refrigerant is free of CFCs which are harmful to the ozone layer. G i Under certain circumstances, e.g. when the fuel system is too hot and needs to be cooled, the cooling switches on again automatically. The red lamp on the ± button the automatic climate control panel flashes. After cooling the fuel system sufficiently, the air conditioning switches off again and the red lamp stops flashing. If you turn off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and/or others. ! If you press the ± button on the automatic climate control panel and it starts to flash, this indicates that the air conditioning is losing refrigerant. The compressor has turned off. The air conditioning cannot be turned on again. Have the air conditioning checked at the nearest authorized Mercedes-Benz Center. i Condensation may drip out from underneath the vehicle. This is normal and not an indication of a malfunction. 194