2000 Mercedes E-Class Owner's Manual - Page 135

Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Automatic climate control Activated charcoal filter An activated charcoal filter markedly reduces bad odors and removes pollutants from the air entering the passenger compartment. To select, press e button. To cancel, press e button again. The blower speed is slightly increased to supply a constant volume of air. The system switches automatically to the air recirculation mode, if the carbon monoxide (CO) or nitric oxide (NOX) of the outside air increases beyond a predetermined level. When pressing button P or S, the filter is also switched off. Notes: The automatic air recirculation does not function when selecting the Economy mode S, or the outside temperature is below 45°F (7°C). The activated charcoal filter should be switched off when windows fog up on the inside, or if the passenger compartment needs to be quickly heated or cooled down. 132 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. Close air outlet in rear passenger compartment. 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 approximately 30 minutes, • if the battery voltage drops.