Is it dangerous to drive with this sensor faulty?

Yes, incorrectly aimed headlights either reduce your own visibility of the road or dazzle oncoming drivers — this is a genuine safety concern and should be repaired promptly.

Does this sensor need calibration after replacement?

Yes, typically requires calibration with the vehicle at a known ride height/load condition.

What is the sensor made of?

A precision linear position-sensing element in a sealed housing.

Headlamp angle correction sensor, front BMW 525D E61 2007 TOURING BLACK

Name: Headlamp angle correction sensor, front BMW 525D E61 2007 TOURING BLACK
Brand: BMW
SKU: 6778809
Price: 22.50 EUR
Availability: InStock

OEM: 6778809

Disassembled car photo

Engine running

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Fast delivery 3–7 days
14-day returns

Details for this exact part

Code: 6778809
OEM: 6778809
Condition: Used
Availability: 1 in stock - ready to ship
Make, model: BMW 5 E61 2004-2010
Year: 2007
Engine: Diesel 3.0L 145KW - M57/T2
VIN: WBAPX51020CU00904

What is this part and why does it matter?

The front headlight leveling sensor measures ride height at the front axle, providing data used to automatically adjust headlight beam angle based on vehicle load and braking.

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Signs of a faulty part

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

Headlights not adjusting despite load changes or braking
Warning light related to the headlight leveling system
Headlight aim stuck too high or too low

Installation information

Mounted on the front suspension, connecting to the vehicle wiring harness — requires calibration after installation.

Frequently asked questions

Changes in front ride height, such as during hard braking, can tilt the headlight beam — this sensor detects that change so the system can compensate automatically, preventing the beam from dazzling oncoming traffic.

Donor vehicle description

VIN: WBAPX51020CU00904
Make, model: BMW 525 E61 TOURING
Year: 2007
Engine: Diesel 3.0L 145KW - M57/T2
Transmission: Automatic
Drive: HECK
Equipment: LHD
Colour: BLACK SAPPHIRE METALLIC (475)

210 parts from this car

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August 2026
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August 2026
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June 2026
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May 2026
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