Headlight Question

I have a 2008 Tacoma. I have had to replace 3 passenger side headlights since I bought it new. The low beam is what burns out. Never a problem on the driver side. Any ideaas on the cause? Thanks in advance.

 

Make sure that the headlight assembly is bolted down properly. Vibration could be your problem.

 

X2

Also make sure you can't see moisture inside the lens.

When it's working, does that headlight seem to be burning dimmer than the other? Thinking maybe low voltage or bad ground.

 

Also try to clean the contacts and apply some dielectric grease, a poor contact can cause them to go bad sooner. Also, be sure you aren't touching the glass on the bulb when you install them, the grease on your fingers is sufficient enough to reduce longevity.