S 500 Coupe (140.070) V8-5.0L (119.980) (1997)
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:
-
60 seconds after ignition ON
-
activated charcoal filter switched on (LED illuminated)
-
high CO-/NOx quantity in outside air
-
EC mode not switched on
-
outdoor temperature > 7 °C
Function