It Works Fine/Oh Wait It Doesn't

[ExpressRules]

Two or three Weeks ago I hit the left blinker to signal a turn and got the dreaded ding and message that my left rear turn signal was out. Ok, no problem, things like that happens. Before I bought a replacement bulb I pulled the fixture to check the connections. The connectors were tight but pulled off to check the pins and they looked clean and straight.

So I then reconnected and tested left blinker and low and behold the error had cleared and blinker worked fine. I figured maybe something wasn't tight or seated after all. I reattach the fixture and for a number of days no problems, but again get error that left rear blinker was out so I'm thinking WTF. So waiting for a day I have time to pull fixture again, but before that happens it error corrects itself and all works fine again.

This working/not working continues. Last two days no problems until driving home from work tonight goes out again, only to clear itself before getting home.

I have a 14 with OEM LED tails, any thoughts what is up? Could it be the bulb is going bad or a bad ground ? Or an electrical issue elsewhere?

Give me your thoughts or theory's.

 

[BrianandChrissy]

Two or three Weeks ago I hit the left blinker to signal a turn and got the dreaded ding and message that my left rear turn signal was out. Ok, no problem, things like that happens. Before I bought a replacement bulb I pulled the fixture to check the connections. The connectors were tight but pulled off to check the pins and they looked clean and straight.

So I then reconnected and tested left blinker and low and behold the error had cleared and blinker worked fine. I figured maybe something wasn't tight or seated after all. I reattach the fixture and for a number of days no problems, but again get error that left rear blinker was out so I'm thinking WTF. So waiting for a day I have time to pull fixture again, but before that happens it error corrects itself and all works fine again.

This working/not working continues. Last two days no problems until driving home from work tonight goes out again, only to clear itself before getting home.

I have a 14 with OEM LED tails, any thoughts what is up? Could it be the bulb is going bad or a bad ground ? Or an electrical issue elsewhere?

Give me your thoughts or theory's.

Had the same thing happen to me. Check your third brake light. That was the culprit!!

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[17CrewCab1500]

I had the same problem, figured it was a bulb, replaced both rear ones and and never had a problem since. I may have got lucky, but I tried the back because those get used more with pressing the brake etc.

 

[hablox]

The left rear icon is just a generic icon, it does not necessarily mean the left rear tail light is out. It could be the right one or the third brake light.

 

[ExpressRules]

The left rear icon is just a generic icon, it does not necessarily mean the left rear tail light is out. It could be the right one or the third brake light.

The message actually says left blinker and before I pulled the left fixture I walked back and looked at it and looked like one bulb was out and had the fast blink. Next time it happens I will check 3rd brake light too.

 

[TatertotScott]

Halogen bulbs, generally not several times mind you, sometimes will bounce and work again temporarily. The filament bouncing around inside will reconnect for a bit.

This typically only happens once, but I have seen it as many as three times before a bulb is totally kaput.

That said, check all your other lights too. Specifically the high mount and both turns.

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