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.
Fail-Safe Function
HINT:
The Headlight Leveling Control ECU performs the fail-safe when detecting following troubles.
At this it lights the warning light ("HEADLIGHT LEVELING") on the combination meter (multi-information display
| Trouble Area | System |
|---|---|
| 1. Headlight leveling actuator |
|
| 2. Vehicle speed sensor | One vehicle speed signal is 0km/h and the other is 10km/h (8 MPH) or more. |
| 3. Generator |
|
| 4. Height control sensor | Signal lever error |
| 5. Pitch angle calculation error | Signal lever error |
Recovery condition (The warning light goes off.)
- In case of 1, 2 and 3: ignition switch OFF
- In case of 4 and 5: ignition switch OFF or signal lever error cancellation
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
