Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2007RS4 QUATTRO SEDAN (8EC) V8-4.2L (BNS)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCONTROL MODULE HVACTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSCLIMATRONIC CONTROL MODULE A/C CONTROL HEAD ELECTRICAL TESTTEST STEP 7
2007 Audi RS4 Quattro Sedan (8EC) V8-4.2L (BNS)
Test Step 7
2007 Audi RS4 Quattro Sedan (8EC) V8-4.2L (BNS)SECTION Test Step 7
Test Step 7
Sunlight Photo Sensor (G107)
• The Climatronic control module (J255) A/C control head and the sunlight photo sensor (G107) are available in various versions. Therefore follow the assignment exactly when replacing an A/C control head.
• Starting with VIN "400000" of model year 2005 (Sedan and Avant) and "012913" of model year 2005 (Cabrio), a modified sunlight photo sensor (G107) and a modified Climatronic control module (J255) A/C control head are installed. Only the sunlight photo sensor (G107) with part number 8E0 907 539 may be installed for the Climatronic control module (J255) A/C control head with a part number up to index "AH". Only the sunlight photo sensor (G107) with part number 8P0 907 539 may be installed for the Climatronic control module (J255) A/C control head with a part number from index "AJ".
• If the assignment between the sunlight photo sensor (G107) and the Climatronic control module ( J255) A/C control head is incorrect, the Climatronic control module (J255) A/C control head cannot evaluate the signal from the sunlight photo sensor (G107) and the A/C system control will malfunction.
* Ground applied to connector "D", terminal "13".
* Ground applied to connector "D", terminal "13".
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.