richardbauer10
Lexus IS Headlight Range Control Fault
Summary of the thread
A 2015 Lexus IS hybrid is experiencing a headlight range control fault, causing the low beams to misalign. The issue might stem from a defective servomotor within the headlight unit. Another possibility is a faulty sensor affecting the auto-leveling system. It is recommended to have the vehicle inspected at a workshop to accurately diagnose and resolve the problem. Ultimately, the servomotor was identified as the cause and replaced, resolving the issue.
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4 comment(s)
richardbauer10 (community.author)
Yeah, they do have auto-leveling. So, if it's not the servomotor, are you saying it could be the control module itself? Where is that module located, by the way?
matslight7
On my Audi, the control module was fine; the sensor was the culprit. But, yeah, a faulty module is possible too. Honestly, diagnosing it without proper tools is tricky. I'd suggest getting it checked at a workshop to pinpoint the exact cause. They'll be able to test the servomotors, sensors, and module properly. It's a pain, I know.
richardbauer10 (community.author)
Thanks for the insight. I suspected as much. I'll take it in to get checked out. Just got the final bill: 1040€. Turns out it was the servomotor like I thought. At least it's fixed now.
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LEXUS
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IS
matslight7
Sounds familiar. I had a similar problem with my 2017 Audi A4. Also got the headlight malfunction warning. Do your headlights have auto-leveling? On mine, it turned out the sensor that controls the auto-leveling had gone bad, which messed up the whole system. Is the light intensity also affected?