I have a 2004 Hyundai Santa Fe V-6 with a 3.5L engine.
People keep telling me that my left brake light does not light up when I
step on the brake. The right brake light works as it should.
It seems to be an intermittent problem. Sometimes, when people say the left
brake light is not working, I back up to a store front window and step on
the brake and the brake light on both sides are working.
Another time, I found that the left brake light was not working so I changed
the bulb. The old bulb didn't necessarily look like it was bad, but I
changed it anyway, and both brake lights then worked.
Shortly after that, I got stopped by a cop for the same thing (no ticket, he
just let me know it wasn't working) and I changed the bulb again and both
brake lights worked. The old bulb looked fine, but I changed it anyway and
the problem went away.
Then, soon thereafter, once again someone told me the left brake light
wasn't working, and I checked and it was not working. This time, I looked
at the bulb again and it looked fine like before. So, I just cleaned the
terminals on the bulb and socket and put it back together. That didn't fix
anything, so the left side brake light is still not working once again.
Tomorrow, I am going to take both sides apart, then switch bulbs between the
right side and left side and test it again. My guess is that won't fix the
problem since I assume both bulbs are good.
I assume that there must be a loose connection or wire someplace, but I
don't know how to check for that. I was planning on buying a test light
anyway since I am also having an electrical problem involving the rear
lights on an old bomb 1989 GMC pickup truck that I own. I am wondering if I
could use the test light to try to narrow down the source of the Hyundai
left brake light problem, but I don't know what or where to test.
Can anyone suggest anything else that I could try?