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

MODEL 453.0 (except 453.091), 453.3 (except 453.391), 453.4 (except 453.491) with CODE l01 (Automatic air conditioning)

Shown 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	Integrated LED
"A/C" button (N20s2)	Refrigerant compressor ON/OFF	Integrated LED
Air recirculation mode button (N20s3)	Air recirculation mode ON/OFF	Integrated LED
Defrost button (N20s4)	Defrost mode ON/OFF	Integrated LED and indicator in the display of the smart radio multimedia navigator (A40/3)
Temperature control (N20s5)	Setting of specified temperature	-
"OFF" button (N20s6)	Air conditioning On/Off	Integrated LED
"AUTO" button (N20s7)	Automatic mode ON	Integrated LED and indicator in the display of the smart radio multimedia navigator (A40/3)
Windshield air distribution button (N20s8)	Windshield air distribution On/Off	Integrated LED
Instrument panel air distribution button (N20s9)	Instrument panel air distribution ON/OFF	Integrated LED
Footwell air distribution button (N20s10)	Footwell air distribution ON/OFF	Integrated LED
Reduce air volume button (N20s11)	Reduce air volume	Integrated LED
Increase air volume button (N20s12)	Increase air volume	Integrated LED

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