Mystery Light

[Joe2006]

Hi folks. I live in northern MN, and it has been a very cold couple of weeks. Nighttime temps of -20 F. Unfortunately, my 2006 Mustang GT sits outside. Today we had a heat wave (36 F!!), so I went outside to start the car. I noticed the outside bulb in the taillight on the drivers side was on, and the lens was warm, so it had been on for a while. Car started fine, I pushed the brake pedal, turned on the blinkers and taillights, and everything else in the taillights worked as it should, but this one bulb just stayed on no matter what. I disconnected the battery, then hooked it back up, and the light was off. I pushed the lock button on the key fob, and the light came back on and stayed on until I disconnected the battery again. Any thoughts or ideas as to what may be going on? Thanks.

 

[oldVOR]

You might have or had water get into the SJB which causes all kinds of electrical issues.
Check in/around the SJB for signs of water intrusion.

 

[JeremyH]

You have a short in the bulb or wiring.

 

[86GT351]

Could be either of the suggestions above. Easiest is the bulb and socket.

 

[Joe2006]

Thank You!