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.
Test sequence
- Initiate On Board Diagnostic (OBD) of automatic vertical headlight aim control. See AUTOMATIC VERTICAL HEADLIGHT AIM CONTROL ON BOARD DIAGNOSTIC (OBD), INITIATING .
Display on VAS 5051:
- In selection -1-, click on the diagnostic function "03-On Board Diagnostic (OBD)".
Display on VAS 5051:
A - 1.Actuator in test
2 - Headlights are lowered
- The headlights will be lowered, until the upper end position has been reached.
- Click on => button
Display on VAS 5051:
A-2. Actuator in test
2- Headlights are raised
- The headlights will be raised, until the upper end position has been reached.
- Click on --> button
Display on VAS 5051:
A - 3. Actuator in test
3 - Signal wire to instrument cluster
- Warning symbol (auto. vert, headlight aim control) is indicated in the center display of the instrument cluster.
- Click on --> button
Display on VAS 5051:
A - Actuator test has ended
- End function "03 - Output Diagnostic Test Mode (DTM)" by pressing <-- button.
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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.