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2021 Tail light issue, need help.

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Kilokai

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I have pictures and video of both cracks, and the one tail light only lighting up one small spot on the driver side when braking. The dealer sent me video of it leaving the lot, not great video, but I can tell it is still only lighting up one part of the brake light on the driver side. This is screen shots of it leaving their lot.
With the screen shots lol.

Ford F-150 2021 Tail light issue, need help. Screenshot_20230202_095327_Video Player


Ford F-150 2021 Tail light issue, need help. Screenshot_20230202_095308_Video Player


Ford F-150 2021 Tail light issue, need help. Screenshot_20230202_095243_Video Player


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oneinch

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First, I would think a gold certified truck would cover this under warranty. BTW, any little thing should have been fixed to get the gold certification. Should have been... Dealers use this certification as a scam to get money. Not that certification is a scam, but this certification isn't free. You paid for this certification whether you know it or not. A certified truck is supposed to like new.

Second, the rear taillights can be enabled to turn on with the front DRLs. I have done this on my truck with FORScan. I think it is looks better. It has a practical use also. Fog won't always activate the headlights. In this situation you're dark on the back end. I didn't like this as it can be foggy in my parts.
 

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That sucks. Have you taken it off and looked at the connectors etc? When you hit the lock button, Does the red LED parking light work?
 
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Kilokai

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That sucks. Have you taken it off and looked at the connectors etc?
I was waiting for the dealership down here to look at it and to make sure it was or wasn't covered under warranty. They said it isn't, so yesterday I took it off and drained the water out. Let it sit over night and plugging it back in soon. It's only the one connector for this housing/lariat trim.
 

cheesedogf150

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I just checked my truck, no rear DRL - Canadian spec, no modifications to rear lighting. Headlight controls in the automatic position.
 

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jeffrt

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I checked at lunch, and my tail lights are on with the DRL's. Never noticed it before. It was hard to see in building reflections driving around in the sun, so I finally parked and put it in drive with the parking brake on, and sure enough they were lit. Learn something every day. I didn't modify anything to turn them on. Barely noticeable in the sunlight.
 
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Kilokai

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I checked at lunch, and my tail lights are on with the DRL's. Never noticed it before. It was hard to see in building reflections driving around in the sun, so I finally parked and put it in drive with the parking brake on, and sure enough they were lit. Learn something every day. I didn't modify anything to turn them on. Barely noticeable in the sunlight.
Thanks, looks like my passenger side is lit as well for the DRL on the tail light. So at least one of mine is working correctly.
 
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Kilokai

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That sucks. Have you taken it off and looked at the connectors etc? When you hit the lock button, Does the red LED parking light work?
Nothing on the driver side is working now prior to taking it off and even after draining/drying it out a bit, still got nothing. In the videos and pictures I have from when I received the truck off the freighter, the outer part of the tail light was not working at all. DRL, turn signal or even when braking.
 

antho

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So looking at the cad file, The wiring seems to go to the bottom board. From the bottom board the feeds split to the other lights. May be worth checking those connectors. I removed as much parts to make it somewhat viewable. Can you verify that your reverse light works? Can you take a pic with your lights turned on?
Ford F-150 2021 Tail light issue, need help. 1675377468598
 
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Kilokai

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So looking at the cad file, The wiring seems to go to the bottom board. From the bottom board the feeds split to the other lights. May be worth checking those connectors. I removed as much parts to make it somewhat viewable. Can you verify that your reverse light works? Can you take a pic with your lights turned on?
1675377468598.png
That's awesome, thanks for the cad picture! Those connections are behind the plastic coverings, haven't taken it apart that far before. Here are the screen caps of a video I just took with lights on and putting truck into reverse and turn signal for both sides. Might have just discovered my other reverse light is now not working either 😕

Ford F-150 2021 Tail light issue, need help. VideoCapture_20230202-174403


Ford F-150 2021 Tail light issue, need help. VideoCapture_20230202-174358


Ford F-150 2021 Tail light issue, need help. 20230202_173632


Ford F-150 2021 Tail light issue, need help. 20230202_173637


Ford F-150 2021 Tail light issue, need help. 20230202_173645
 

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antho

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May have some codes that need cleared. Not sure if you have a code scanner to check but definitely worth looking into.
 

cheesedogf150

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I just checked my truck, no rear DRL - Canadian spec, no modifications to rear lighting. Headlight controls in the automatic position.
Just notified today that I do have rear DRL. They only turn on when you put the truck in gear. In park they are off which is why I never saw them on before.
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