Adaptive headlight issue?

BIGCAT41959

MEMBER
2017 LINCOLN MKZ
2.0L
4 CYL
4WD
AUTOMATIC
69,000 MILES

Hello my car listed above was equipped with HID adaptive headlights... I upgraded the bulbs to D3S LED bulbs unfortunately right now my RH Headlamp bulb is burnt out whereas my LH is still working... With that being said since the RH light hasn’t been working the LH light has been shining directly on to incoming traffic... When I replace the RH bulb will the LH light adjust automatically back to its correct position?   Or will I need to replace a module for the adaptive headlights to operate correctly?

Friday, November 22nd, 2024 AT 9:57 AM

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
54,591 POSTS

With both headlights working the system should recalibrate. These bulbs need to be installed correctly, or the system will have a hard time adjusting the light beams. Here is how to change the headlamps bulbs correctly in case you need it, also if the system is having a problem, it will leave a code which you can gather during a CAN scan. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

There is no programming when these bulbs or headlight control module is replaced, FYI. Check out the images (below). Let us know how it goes.

Images (Click to make bigger)