2000 Mercedes S-Class Owner's Manual - Page 177

Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Automatic climate control Residual engine heat utilization 174 The function switches off automatically: • if the electronic key in starter switch is turned to position 2, • after approximately 30 minutes (if residual engine heat utilization is selected on the optional rear air conditioner: after approximately 15 minutes), • if the battery voltage drops. Note: With the engine switched off, it is possible to continue to heat or ventilate the interior for a short while. Air volume and distribution are controlled automatically. To select: Turn the electronic key in starter switch to position 1 or 0 or remove it altogether. Press button T. The display shows "REST". This function selection will not activate if the battery level is insufficient. The battery symbol # will appear in the automatic climate control display some time before the residual engine heat utilization is switched off if the battery voltage drops.