NOTE: A = Permanent wired connection; D = High speed CAN bus; N = Medium speed CAN bus; O = LIN bus
| Pos. | spare part no | Name |
| 1 | - | Battery |
| 2 | - | Electric blower fan |
| 3 | - | Stepper motor for left mixing temperature damper |
| 4 | - | Stepper motor for air supply to the windshield (de-icing) |
| 5 | - | Outdoor air pollution sensor |
| 6 | - | Interior humidity sensor |
| 7 | - | Air intake stepper motor |
| 8 | - | Stepper motor for right mixing temperature damper |
| 9 | - | Stepper motor for air supply to the face/footwell |
| 10 | - | Outdoor temperature sensor |
| 11 | - | A/C Compressor Solenoid Valve (i6 cars only) |
| 12 | - | ECT sensor |
| 13 | - | Refrigerant pressure sensor |
| 14 | - | Cabin air temperature sensor |
| 15 | - | Evaporator temperature sensor |
| 16 | - | ECM |
| 17 | - | ATC module |
| 18 | - | Fuse 27, CJB |
| 19 | - | Blower fan motor control module |
| 20 | - | Solar radiation sensor |
| 21 | - | Fuse 17, BJB |
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