I kept getting the mysterious tail light failure error on the OBC. The brake light switch was recently replaced and trunk wiring is in good condition. When removing the light to inspect it, I noticed one of the contacts in the lamp circuit board near the brake bulb looked like it got hot and developed a small hole in the metal. I filled it with solder, filed it clean and added another ground wire from it to the chassis. It seemed to work fine at first but it’s now blowing fuse #46. Any ideas on how to get a better ground so the fuse stays happy?
Yes there’s a short to ground. I think my question was more directed at the presence of the burnt contact on the brake light circuit. If this is common or a somewhat common issue I was hoping someone knows of a helpful fix. I’ve seen it now on another used drivers side lamp so I’m assuming there’s a related cause like an undersized ground wire or water getting in and increasing resistance on the circuit.
I had this happen to the driver's side taillight. I kept getting the bulb failure message, but the light was fine. The contact point on the brake light metal "circuit board" had a hole in it like you are describing. I bought some copper foil tap and wrapped it around the area that had the hole. I haven't had a problem since.
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