2003 Mercedes SL-Class Owner's Manual - Page 155

Controls in detail Automatic climate control Reactivating There are several ways to reactivate the automatic climate control system: Press any button on the automatic climate control panel ( page 148). The indicator lamp on button M switches off. or Turn one of the control knobs on the automatic climate control. The indicator lamp on button M switches off. Air conditioning The air conditioning is operational while the engine is running and cools the interior air to the temperature set by the operator. Activating Moist air can fog up the windows. You can dehumidify the air with the air conditioning. Press ACOFF again ( page 148). The indicator lamp on the button ACOFF goes out. The air conditioning uses the refrigerant R134A. This refrigerant is free of CFCs which are harmful to the ozone layer. i Condensation may drip out from underneath the vehicle. This is normal and not an indication of a malfunction. Deactivating It is possible to deactivate the air conditioning (cooling) function of the automatic climate control system. The air in the vehicle will then no longer be cooled or dehumidified. Press button ACOFF ( page 148). The indicator lamp on the button ACOFF lights up. ! If the ACOFF button on the automatic climate control panel starts to blink, this indicates that the air conditioning is losing refrigerant. The compressor has turned itself off. The air conditioning cannot be turned on again. Have the air conditioner checked at the nearest authorized Mercedes-Benz Center. 155