What is your question?
Passenger side headlight bulb will randomly go off when driving or when parked. Occasionally passenger side headlight bulb will not even come on when headlights are turned on parked or driving. Anytime headlights are turned on the light from the passenger side headlight bulb can be seen quivering or wavering for a short time and then burns steadily but never quite as bright as the driver side headlight. Is this a bulb, ballast, igniter, wiring, switch problem or any combination of these? Vehicle has been extremely well maintained and has 133,000 miles on it. Lincoln dealership first said it was the battery and replaced it which did not fix the problem. Then they said it was the headlight bulb itself. I have lost confidence in them. I just want to repair the correct item without guessing and needlessly replacing parts. The problem shows up both when turning the headlight switch manually to the headlight position or leaving it in the auto headlights on position.
How long has your 2010 Lincoln MKT had this problem?
About 2 to 3 months
