| G107 | Sunlight penetration photosensor |
| G150 | Left vent temperature sender |
| G151 | Right vent temperature sender |
| G261 | Left footwell vent temperature sender |
| G262 | Right footwell vent temperature sender |
| G308 | Evaporator temperature sensor |
| J255 | Climatronic control unit |
| T2fo | 2-pin connector, black |
| T2fx | 2-pin connector, black |
| T2fy | 2-pin connector, black |
| T2fz | 2-pin connector, black |
| T2ga | 2-pin connector, black |
| T6z | 6-pin connector, black |
| T16o | 16-pin connector, black |
| T17a | 17-pin connector, black, behind glove compartment |
| T20e | 20-pin connector, black |
| L11 | Connection 3, in air conditioning system wiring harness |
| G135 | Potentiometer for defroster flap control motor |
| G470 | Potentiometer for front air distribution control motor |
| J255 | Climatronic control unit |
| T6bd | 6-pin connector, blue |
| T6be | 6-pin connector, blue |
| T16o | 16-pin connector, black |
| T16p | 16-pin connector, brown |
| V107 | Defroster flap control motor |
| V428 | Air distribution flap control motor |
| L9 | Connection 1, in air conditioning system wiring harness |
| L10 | Connection 2, in air conditioning system wiring harness |
| * | Only left-hand drive models |
| *2 | Only right-hand drive models |
| G468 | Potentiometer for footwell vent control motor |
| G644 | Potentiometer for fresh air/air recirculation, air flow flap control motor |
| J255 | Climatronic control unit |
| T6bf | 6-pin connector, blue |
| T6bg | 6-pin connector, blue |
| T16o | 16-pin connector, black |
| T16p | 16-pin connector, brown |
| V154 | Fresh air and air recirculation flap control motor |
| V261 | Footwell flap control motor |
| L9 | Connection 1, in air conditioning system wiring harness |
| L10 | Connection 2, in air conditioning system wiring harness |
| * | Only left-hand drive models |
| *2 | Only right-hand drive models |
| G65 | High-pressure sender |
| G238 | Air quality sensor |
| J255 | Climatronic control unit |
| J519 | Onboard supply control unit |
| SC30 | Fuse 30 on fuse holder C |
| T10f | 10-pin connector, green, in E-box in engine compartment |
| T10j | 10-pin connector, dark brown, in E-box in engine compartment |
| T17a | 17-pin connector, black, behind glove compartment |
| T20e | 20-pin connector, black |
| T73b | 73-pin connector, white |
| 201 | Earth connection 5, in engine compartment wiring harness |
| B278 | Positive connection 2 (15a) in main wiring harness |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| * | Only for countries with hot climate |
| J255 | Climatronic control unit |
| J541 | Coolant shut-off valve relay |
| N280 | Air conditioner compressor regulating valve |
| N422 | Climatronic coolant shut-off valve |
| T10a | 10-pin connector, brown, in E-box in engine compartment |
| T10j | 10-pin connector, dark brown, in E-box in engine compartment |
| T17a | 17-pin connector, black, behind glove compartment |
| T20e | 20-pin connector, black |
| 12 | Earth point, on left in engine compartment |
| 132 | Earth connection 3, in engine compartment wiring harness |
| 201 | Earth connection 5, in engine compartment wiring harness |
| 281 | Earth point 1, engine prewiring harness |
| 368 | Earth connection 3, in main wiring harness |
| 636 | Earth point, onboard supply control unit |
| * | Only for countries with hot climate |
| *2 | According to equipment |
| G462 | Sender for front Bitron blower regulation |
| J255 | Climatronic control unit |
| SC1 | Fuse 1 on fuse holder C |
| SH13 | Fuse 13 in fuse holder H |
| SC15 | Fuse 15 on fuse holder C |
| SH29 | Fuse 29 in fuse holder H |
| T2cz | 2-pin connector, black |
| T2db | 2-pin connector, black |
| T6aa | 6-pin connector, brown |
| T16p | 16-pin connector, brown |
| T17a | 17-pin connector, black, behind glove compartment |
| T20e | 20-pin connector, black |
| V2 | Fresh air blower |
| 638 | Earth point, on right A-pillar |
| 639 | Earth point, left A-pillar |
| * | see applicable current flow diagram for fuse assignment |
| *2 | Only left-hand drive models |
| *3 | Only right-hand drive models |
| *4 | Only models with auxiliary coolant heater |
| *5 | Only models with start/stop system |
| *6 | Only models with no start/stop system |
| *7 | Only models with no auxiliary coolant heater |
| E265 | Operating and display unit for rear air conditioning system |
| E653 | Button for left seat heating |
| E654 | Button for right seat heating |
| G59 | Driver seat temperature sensor |
| G60 | Front passenger seat temperature sensor |
| J255 | Climatronic control unit |
| J708 | Residual heat relay |
| J774 | Heated front seats control unit |
| T6v | 6-pin connector, white, Coupling point under front passenger seat |
| T8s | 8-pin connector, black, under driver seat |
| T8t | 8-pin connector, black |
| T8u | 8-pin connector, black, under front passenger seat |
| T16o | 16-pin connector, black |
| T17a | 17-pin connector, black, behind glove compartment |
| T20d | 20-pin connector, black |
| T20e | 20-pin connector, black |
| * | Only models with heated seats |
| *2 | see applicable current flow diagram for auxiliary coolant heater |
| *3 | see applicable current flow diagram for seat heating |
| *4 | From November 2011 |
| E265 | Operating and display unit for rear air conditioning system |
| G174 | Rear vent temperature sender |
| G463 | Rear blower regulation sender |
| SC42 | Fuse 42 on fuse holder C |
| SC57 | Fuse 57 on fuse holder C |
| T2ak | 2-pin connector, black |
| T2al | 2-pin connector, black |
| T6v | 6-pin connector, white, Coupling point under front passenger seat |
| T6y | 6-pin connector, brown |
| T20d | 20-pin connector, black |
| V80 | Rear fresh air blower |
| 170 | Earth connection 1, in air conditioning system/Climatronic operating unit wiring harness |
| 427 | Earth connection 3, in right rear end wiring harness |
| 654 | Earth point, on right D-pillar |
| E265 | Operating and display unit for rear air conditioning system |
| G478 | Potentiometer for rear air distribution control motor |
| G479 | Potentiometer for rear temperature flap motor |
| G683 | Potentiometer for rear air distribution control motor 2 |
| T20d | 20-pin connector, black |
| V136 | Rear air distribution control motor |
| V137 | Rear temperature flap control motor |
| V435 | Rear air distribution control motor 2 |
| 170 | Earth connection 1, in air conditioning system/Climatronic operating unit wiring harness |
| L46 | Connection (5 Volt), in Climatronic operating unit wiring harness |
| * | Only models with side window vents in passenger compartment |
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