A3 Quattro L4-2.0L Turbo (CBFA) (2009)
Solar Sensor: Service and Repair
Sunlight Photo Sensor
‹› As a running change beginning in 11.2003, a modified Sunlight Photo Sensor (G107) and a modified Climatronic Control Module (J255) display
and control head. Only Sunlight Photo Sensor (G107) with part number 4E0 907 539 must have been/must be installed for A/C control heads
Climatronic Control Module (J255) with part number without or up to index "C". Only Sunlight Photo Sensor (G107 ) with part number 8P0 907
539 must have been/must be installed for Climatronic Control Module (J255) display and control head with part number beginning with index "D".
‹› If the allocation 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.
‹› No Sunlight Photo Sensor (G107) is installed on vehicles with manually regulated A/C system.
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Switch off ignition.
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Carefully pry cover - A - out of front windshield defroster vent.
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Carefully pry Sunlight Photo Sensor (G107) - B - out of front windshield defroster vent.
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Disconnect connector - C -.
‹› Do not interchange Sunlight Photo Sensor (G107) - B - (4 electrical connections) with light emitting diode for central locking system and interior
monitoring system - D - (2 electrical connections).