2002 Mercedes SL-Class Owner's Manual - Page 100

Instruments and controls Operation Driving Instrument cluster display 96 Practical hints Car care Technical data Index Automatic climate control Air recirculation This mode can be selected to temporarily reduce the entry of annoying odors or dust into the vehicle's interior. Outside air is not supplied to the car's interior. To select, press O button. To cancel, press O button again. The system will automatically switch from recirculated air to fresh air: • after approx. 5 minutes at outside temperatures below approx. 40°F (5°C), • after approx. 30 minutes, at outside temperatures above approx. 40°F (5°C), • after approx. 5 minutes, if button S is pressed. Notes: If the windows should fog up from the inside, switch from recirculated air back to fresh air. At high outside temperatures, the system automatically engages the recirculated air mode thereby increasing the cooling capacity performance, switching to partially fresh air within 20 minutes. Residual engine heat utilization With the engine switched off, it is possible to continue heating the interior for a short while. Air volume and distribution are controlled automatically. To select: Turn electronic key in steering lock to position 1 or 0 or remove electronic key. Press T button. This function selection will not activate if the battery charge level is insufficient. To cancel: Press T button. The system will automatically shut off: • If you turn electronic key in steering lock to position 2, • after approx. 30 minutes, • if the battery voltage drops.