Light sensor AUDI A6 AVANT 2006

OEM: 4F0907539B

Disassembled car photo

Engine running

  • Tested before shipping
  • Guaranteed quality
  • Fast delivery 3–7 days
  • 14-day returns

What is this part and why does it matter?

The light sensor detects ambient light levels, automatically activating headlights when it gets dark (auto headlight function) without driver input.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

  • Headlights don’t turn on automatically in low light
  • Headlights stay on constantly regardless of light level
  • Inconsistent automatic activation

Installation information

Mounted on the dashboard or near the windscreen, connecting to the vehicle wiring harness.

Frequently asked questions

Reliable automatic headlight activation ensures your vehicle is visible to others as light conditions change, particularly important during dusk or sudden weather changes like entering a tunnel.

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