rob_s
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- Urbana, IL
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- Rob
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- 2016 Mustang GT PP
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tl;dr: Has anyone had an issue with one bulb of the brake light and turn signal not illuminate from time to time?
Several weeks ago, I was driving home and hit the right turn signal, and the click noise inside the cabin was fast every other click, indicating a problem. When I got home, I discovered the right-most light on the right turn signal didn't work (so instead of 1-2-3, 1-2-3, I had 1-2-hold, 1-2-hold), and the brake light also didn't illuminate when using the keyless to lock the doors (although the lower intensity taillight did work). The next day, it was happening again, so I stopped by the dealer before I went on a road trip. As I pull from the parking lot to the service bay, it started working again, so I went on my way.
The following week, same thing, and once again, it went away after two drives (start/stop cycles), but I decided to make an appointment for service anyway. They found a TSB and ran a software update per the TSB. Went away for several weeks. Yesterday morning on the way home, it started again, and continued on my way out this morning, but was back to normal on the drive home today (again, after 2 start/stop cycles). I don't know if it has any relevance, but it seems to be coming up on the cooler mornings we've had, when it's been in the high 30s or low 40s.
Any thoughts on what could be causing this?
Several weeks ago, I was driving home and hit the right turn signal, and the click noise inside the cabin was fast every other click, indicating a problem. When I got home, I discovered the right-most light on the right turn signal didn't work (so instead of 1-2-3, 1-2-3, I had 1-2-hold, 1-2-hold), and the brake light also didn't illuminate when using the keyless to lock the doors (although the lower intensity taillight did work). The next day, it was happening again, so I stopped by the dealer before I went on a road trip. As I pull from the parking lot to the service bay, it started working again, so I went on my way.
The following week, same thing, and once again, it went away after two drives (start/stop cycles), but I decided to make an appointment for service anyway. They found a TSB and ran a software update per the TSB. Went away for several weeks. Yesterday morning on the way home, it started again, and continued on my way out this morning, but was back to normal on the drive home today (again, after 2 start/stop cycles). I don't know if it has any relevance, but it seems to be coming up on the cooler mornings we've had, when it's been in the high 30s or low 40s.
Any thoughts on what could be causing this?
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