Turn Signal Alarm

[2013megacab]

When turning right, my turn signal flasher makes a noise at twice the normal flash rate. The indicator on the dash and the right front turn signal blink at the normal rate. When I start the engine I get a message saying the right front turn signal bulb is bad, but I see the signal blinking reflected in the car in front of me.

I looked in the bulbs table of my manual and it says "dealer service required". Is the bulb replaceable or do they have to change the entire headlight like they do the courtesy light in the overhead console?

Why does it think the bulb is bad when it is working? Are there multiple bulbs and one has failed?

Thanks,

Al

 

[Flash1034]

If you have projector headlights, the led turn signals are part of the housing and cannot be replaced if one or more of the led elements is out. A new housing has to be ordered....ask me how I know....

Also, you likely have water in your housing and that’s what caused the led to fail....again...ask me how I know...

 

[2013megacab]

If you have projector headlights, the led turn signals are part of the housing and cannot be replaced if one or more of the led elements is out. A new housing has to be ordered....ask me how I know....

Also, you likely have water in your housing and that’s what caused the led to fail....again...ask me how I know...

I have had condensation in my headlight twice now. The first time I followed a post that said some were installed or assembled incorrectly from the factory. There are vents that are designed to let condensation "cook" out when the headlight runs. I found and used a hair dryer to dry the headlight out and re-positioned the vents. It looked great when installed but then condensation reappeared. Then I found a small leak in my Y-tube that was releasing moisture under the hood. I believe when the headlight cooled off it sucked the moisture back in from the humid engine compartment. Then the turn signal quit working. I decided to try once more before biting the bullet to buy a new headlight. I let a hair dryer run for several hours (too long, it turns out) but it cleared up the moisture. In the process, after the lens was clear I turned the light over and water ran out of the vents. I think maybe the first time I dried it I didn't get all the water out. This is what led me to put the heat in from several directions and longer. After I was convinced it was dry I mounted the headlight and then I noticed that the yellow turn signal lens was deformed. I presume it got too hot and partially melted. It's not too bad, but noticeable.

Guess what? Now the LED works again! It must have had moisture in the connector or something. If I had been more careful with the hair dryer I might have had a complete success, a zero cost fix.

Al

 

[Dasmoeturhead]

My passenger side headlight housing has lots of water in it after a long trip through hard rain. Thanks for the heads up. Just took mine out and dried it with a heat gun. Checked the vent caps, and then sealed the lens to the housing with clear RTV.
,NOTE!!!! The plastic piece that the actual headlight lamp fits into doesn't take heat to well. It almost got cooked. Be careful. Other than that 2 bolts and the white clip that you access through the fender well. I used a 1/4" drive set for the whole deal. I used a 10mm regular socket for the upper bolt, and a long extension with a magnetic deepwell 10mm socket for the bolt on the bottom. You need a 8mm socket to remove the access cover on the housing, so you can get to the inside of this ridiculous contraption.
Now time will tell if this worked.

 

[2013megacab]

The bad news is I still have condensation showing up so my headlight must have a leak somewhere. And the LED quit working again. I saw a YouTube video on repairing another brand of headlight. I may just try to take mine apart and see what, if anything, I can do before spending nearly $400 to buy a replacement. The repair process is to rotate the headlight with a heat gun directed on the seam between the clear lens and the black housing to soften the sealant and then pull it apart.

Al

 

[Dasmoeturhead]

Best of luck to ya. I might need to try that myself.
From what I seen, it appears the sealant between the lens and housing wasn't applied very well. Now that my housing is dry, there are water spots on the inside of the lens. Hard deposits. That sucks!

 

[Dasmoeturhead]

Not fixed yet. Wife took the truck this morning, and when she came back I noticed light condensation inside the housing. Pissed!

 

[2013megacab]

Just went back and re-read your first post. Interesting - that is exactly how mine started. When I pull mine I am going to pressurize it with vacuum cleaner exhaust and put some soapy water on it to see if I can find a leak. I can't see a crack anywhere.

Al

 

[Dasmoeturhead]

I didn't see any cracks either. The black sealant application looks suspect but then this just started 2 weeks ago, and I'm over 78k . IDK