Climate Control Operating Unit, Component Description - GF83.40-P-2261KJE

MODEL 453.091/391/491

Shown with code I01 (Automatic air conditioning) and without code 494 (USA version)

Courtesy of MERCEDES-BENZ USA

Control element	Controllable function	Operating feedback
Rear window heater button (N20s1)	Rear window heater ON/OFF	LED above
"A/C" button (N20s2)	Refrigerant compressor ON/OFF	LED below
Air recirculation mode button (N20s3) (only with code I01 (Automatic air conditioning))	Air recirculation mode ON/OFF	LED above
Defrost button (N20s4)	Defrost mode ON/OFF	LED above
Temperature control (N20s5)	Setting of specified temperature	-
"OFF" button (N20s6)	Air conditioning On/Off	LED below
"AUTO" button (N20s7) (only with code I01 (Automatic air conditioning))	Automatic mode ON/OFF	LED below
Windshield air distribution button (N20s8)	Windshield air distribution On/Off	LED above
Instrument panel air distribution button (N20s9)	Instrument panel air distribution ON/OFF	LED at right side
Footwell air distribution button (N20s10)	Footwell air distribution ON/OFF	LED below
Reduce air volume button (N20s11)	Reduce air volume (automatic mode OFF)	LED below and at left side
Increase air volume button (N20s12)	Increase air volume (automatic mode OFF)	LED above and at left side

Location

The climate control operating unit is located in the center console.

Task

The climate control operating unit has the following tasks:

Reception of signals and requests

The climate control operating unit receives requests for function feedback via the climate control LIN (LIN B8-3) for the following functions:

Transmission of signals and requests

The climate control operating unit sends function requests via the climate control LIN that can be selected via the various controls.

Wiring diagram of air conditioning