S 500 Sedan (140.051) V8-5.0L (119.980) (1996)
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Climate Control Exhaust Gas Sensor: Description and Operation
The smog sensor switches to 100 % recirculated air via the pushbutton control module when the following conditions are fulfilled:
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60 seconds after ignition ON
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activated charcoal filter switched on (LED illuminated)
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high CO-/NOx quantity in outside air
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EC mode not switched on
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outdoor temperature > 7 °C
Function
