2005 Mercedes SLK-Class Owner's Manual - Page 188

Controls in detail Automatic climate control* Air conditioning The air conditioning is operational while the engine is running and cools the interior air to the temperature set by the operator. The air conditioning uses the refrigerant R134a. This refrigerant is free of CFCs which are harmful to the ozone layer. Warning! 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 air condition on/off switch ± ( page 185). The indicator lamp on air condition on/off switch ± comes on. Activating Moist air can fog up the windows. You can dehumidify the air with the air conditioning. Press air condition on/off switch ± ( page 185). The indicator lamp on the air condition on/off switch ± goes out. G ! If the indicator lamp on the air condition on/off switch ± comes on while driving and you cannot switch on the air conditioning again by pressing the air condition on/off switch ±, the air conditioning is losing refrigerant. Have the air conditioning checked at the nearest authorized Mercedes-Benz Center. While driving, deactivate the air conditioning only temporarily to prevent window fogging. i Condensation may drip from underneath the vehicle. This is normal and not an indication of a malfunction. 188