AIR CONDITIONING – Mercedes-Benz C250 2012 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram, with Thermotronic (1 of 3) for Mercedes-Benz C250 2012

List of elements for Automatic A/C Wiring Diagram, with Thermotronic (1 of 3) for Mercedes-Benz C250 2012:

• (+)
• (behind left side of front bumper) outside temperature sensor
• (not used)
• (right rear of engine compt) coolant circulation pump
• (under left front of center console)
• 30g
• 34kd
• Ac housing
• Air quality sensor (right rear of engine compt)
• Air recir- culation mode button
• Automatic air conditioning control & operating unit
• Bf-sig
• Blower motor
• Blower regulator
• Can-b h
• Can-b l
• Central air distribution position detection microswitch (comfort) (bottom right side of hvac unit)
• Computer data lines system
• Defogger system
• Evaporator temperature sensor (lower left side of evaporator)
• F-sig
• Front electrical prefuse box (left side of engine compt)
• Fuse 10a
• Fuse 150a
• Fuse 40a
• Fuse 7.5a
• Fuse 80a
• Gnd
• Hot at all times
• Hot w/ circuit 30g relay energized
• In-b8
• Interior temperature sensor (comfort) (left center of dash)
• Lin b8
• Mk (+)
• Mot
• Nca
• Rear window heater button
• Red
• Refrigerant compressor (lower left front of engine)
• Refrigerant pressure sensor (right front of engine compt)
• Rv (+)
• Rv (-)
• S-sig
• S29
• Sig
• Sun sensor (comfort) (top center front of dash)
• Vehicle interior fuse box (right front footwell)
• W/ magnetic clutch
• W/o magnetic clutch
• W12
• W15/1 (right front footwell)
• W3/1 (right front wheelwell)
• X25/14-c1
• X26-c1

Automatic A/C Wiring Diagram, with Thermotronic (2 of 3) for Mercedes-Benz C250 2012

List of elements for Automatic A/C Wiring Diagram, with Thermotronic (2 of 3) for Mercedes-Benz C250 2012:

• (if equipped) rear air outlet symbol illumination
• (right rear engine compt) emissions sensor
• 12v
• 58d
• Data
• Dew point sensor (c-class: right rear of engine compt)
• Diffuse flap actuator motor (c-class: upper center of heater system air circulation unit) (glk-class: hvac assembly)
• Fresh air/ recirculation air flap actuator motor (right side heater system air circulation unit)
• Front electrical prefuse box (c-class: at right rear engine compt) (glk-class: right rear engine compt)
• Fuse 150a
• Gnd
• Hot at all times
• Left blending air flap actuator (left side heater system air circulation unit)
• Left center air outlet symbol illumination
• Left center outlet flap actuator motor (c-class: lower left front of heater system air circulation unit) (glk-class: hvac assembly)
• Left defroster vent flap actuator motor (upper left side of heater system air circulation unit)
• Left front side air outlet symbol illumination
• Mr6
• Nca
• Ptc heater booster
• Ram air flap actuator motor (c-class: upper right side of heater system air circulation unit) (glk-class: hvac assembly)
• Rear automatic air conditioning operating unit
• Red
• Right blending air flap actuator (right side heater system air circulation unit)
• Right center air outlet symbol illumination
• Right center outlet flap actuator motor (c-class: lower right front of heater system air circulation unit) (glk-class: hvac assembly)
• Right defroster vent flap actuator motor (upper left side of heater system air circulation unit)
• Right footwell flap actuator motor (c-class: lower right side of heater system air circulation unit) (glk-class: right side heater system air circulation unit
• Right front side air outlet symbol illumination
• W/ air outlet symbol illumination
• W15/5 (left front footwell)
• W15/9 (c-class: top of left kick panel)
• X18/35-c1

Automatic A/C Wiring Diagram, with Thermotronic (3 of 3) for Mercedes-Benz C250 2012

List of elements for Automatic A/C Wiring Diagram, with Thermotronic (3 of 3) for Mercedes-Benz C250 2012:

• (behind radiator) combustion engine & a/c w/ integrated control fan motor
• (in hvac unit) (if equipped) ptc heater booster
• (right rear of
• Activated charcoal filter shutoff valve (top of fuel filler tube)
• Akv
• Can-e h
• Can-e l
• Computer data lines system
• Coolant circulation pump (right front of engine compt)
• Coolant circulation pump relay (right front footwell)
• Coolant temperature sensor (left rear of engine)
• Dew point sensor (right plenum chamber)
• Diffuse flap actuator motor (top center of hvac unit)
• Early production
• Engine compt)
• Engine diagnosis radiator sensor (behind top right side of radiator)
• Front electrical prefuse box
• Fuse 100a
• Fuse 150a
• Fuse 50a
• Hot at all times
• Late production
• Left blending air flap actuator (lower left side of hvac unit)
• Left center air outlet flap actuator motor (left front of hvac unit)
• Left defroster vent flap actuator motor (upper left side of hvac unit)
• Left footwell flap actuator motor (lower left side of hvac unit)
• Lin c1
• Llkr
• Lpv
• Lues
• Me-sfi (me) control unit (center rear of engine)
• Mr4
• Mr5
• Ptc heater booster electrical connector
• Purge control valve (left side of engine compt)
• Rear blend air flap actuator motor (bottom left front of hvac unit)
• Red
• Right center air outlet flap actuator motor (right front of hvac unit)
• Right defroster vent flap actuator motor (upper right side of hvac unit)
• Right footwell flap actuator motor (lower right side of hvac unit)
• Senm3
• Tmot
• W/ eco start/stop function
• W/o eco start/stop function
• W15/5 (left front footwell)
• W2 (right front of engine compt)
• W9 (lower left front of engine compt)
• X25/2-c1

Automatic A/C Wiring Diagram, without Thermotronic (1 of 2) for Mercedes-Benz C250 2012

List of elements for Automatic A/C Wiring Diagram, without Thermotronic (1 of 2) for Mercedes-Benz C250 2012:

• (left front footwell) w15/5
• 12v
• 30g
• Air recir- culation mode button
• Automatic air conditioning control & operating unit
• C13d
• C14m
• C17c
• C18m
• C19i
• C20m
• C21m
• C3m
• C5c
• Can-b h
• Can-b l
• Computer data lines system
• Evaporator temperature sensor (lower right side of hvac unit)
• Fresh air/ recirculated air flap switchover valve
• Front sam control unit w/ fuse/ relay module (left rear of engine compt)
• Fuse 7.5a
• Gnd
• Hot at all times
• Interior temperature sensor (right of steering column)
• Lin b8
• Outside temperature display temperature sensor
• Rear window heater button
• Red
• Refrigerant compressor (left front of engine)
• Refrigerant pressure sensor (left front of engine compt)
• Right front footwell air outlet temperature sensor
• Right side air outlet temperature sensor
• Sig
• Sig li
• Sig re
• State solid
• Sun sensor (top center of dash)
• W/ magnetic clutch
• W15/2 (left front footwell)
• W15/5 (left front footwell)
• X15/5-c2
• X25/2-c1
• X26-c1

Automatic A/C Wiring Diagram, without Thermotronic (2 of 2) for Mercedes-Benz C250 2012

List of elements for Automatic A/C Wiring Diagram, without Thermotronic (2 of 2) for Mercedes-Benz C250 2012:

• (behind radiator) combustion engine & a/c w/ integrated control fan motor
• (left front footwell) w15/5
• Ac housing
• Blower motor
• Blower regulator
• C14m
• Front sam control unit w/ fuse & relay module (left rear of engine compt)
• Fuse 15a
• Hot w/ engine circuit 87 relay energized
• Interior lights system
• Interior temperature sensor w/ integrated fan
• Left center air outlet symbol illumination
• Left front footwell air outlet temperature sensor
• Left front side air outlet symbol illumination
• Left side air outlet temperature sensor
• Overhead control panel electronics (w/o titling/sliding roof)
• Rear air outlet symbol illumination
• Red
• Right center air outlet symbol illumination
• Right front side air outlet symbol illumination
• Vehicle interior humidity/ temperature sensor (top center of front windshield)
• W/ air outlet symbol illumination
• W15/5 (left front footwell)
• W18 (w/o direct select) w19 (w/ direct select) (w/o direct select: under driver's seat) (w/ direct select: under front passenger's seat)
• W9 (lower left front of engine compt)
• X157/1-c2
• X18-c4
• X25/2-c1
• X83/11-c2