Help, I need help diagnosing the auto-leveling feature on my 996.2 Litronic headlights.
1. Durametric says there are no faults
2. The Passenger light DOES adjust up and down as the car pitches while driving, and during the “headlight dance” on startup. Using the Durametric tool, I can manually trigger this headlight to adjust up/down.
3. The Driver’s light is FIXED while driving, on startup, and when attempting to manually adjust using the Durametric commands.

I doubt the sensors are broken since the passenger light correctly self-levels. Could the Driver’s headlight servo need refurb or lubrication?

Thanks in advance

 

Yeah, you might have to replace the driver-side servo.

If you’re handy, and don’t want to spend money, you can confirm this by swapping the servomotors and checking if the problem migrates. If it doesn’t, you’re likely looking at a wiring problem.

 

The servo pushrod probably came loose from the lens. Take the light off the car and open the big cover on the back. You can see the servo motor and pushrod.

 

Does anyone know if the servo motors can be serviced? If they’re simple enough, I can try cleaning any electrical contacts or greasing the gears.

 

They are very simple but putting them back together after taking them apart not so much due to bending tabs over a 2nd time, using only hand tools.
They're very similar to small Mabuchi electric motors used in toys and rc models.

If anything I'd spray brake cleaner into it to wash away the dust from the brushes and re-oil the bronze bushes.