2018 tacoma taillight problem

I'm in need of help I have a 2018 tacoma and i have taillights problems my taillights running lights dont work when i hit the lights on no lights come on but the turn signal works and brake lights work as well, I checked all the fuses and there functioning good no blown fuses I checked the bulbs and their good any suggestions what could be the problem? Also headlights work fine. Help my taco friend's

 

You checked the fuses with a meter or light test.... under the dash and hood??
Any recent electrical mods??

 

Here’s the (Edit) taillight diagrams. Check all fuses.

 

If it's an '18, why wouldn't you take it to the dealer for warranty repairs?

 

Yes I checked under the hood and under the dash with a light test and all fuses where good just wondering if theirs a relay that's burned but which one.

 

I did and they said we can't work on it today and needed to set another appointment also they said it might or might not be under warranty cause of all the extra lights I added like roof, ditch lights etc etc but that's just BS from the dealer

 

Thanks for the diagram just wondering if there's a relay for the tailgate now it's time to figure it out if I can't I may send this to a buddy but I really appreciate the info.

 

Not trying to defend the dealer here but I wonder why it would be BS for the dealer to say it may or may not be covered by warranty sight unseen especially with the electrical mods?

 

These trucks electrical system are complicated... tapping into wires or using a add a fuse to a circuit can result in major gremlins. A lot of people were just having issue replacing stock bulbs with LEDs. Resistance is different and the computer freak the fuck out.

 

That's what the idiot said to me I told him that it's bs and doesn't make sense since my mods are connected to the battery and shouldn't affect the taillights

 

Make sure one of the wires isn't grounding somewhere.

 

Like I said, why would it be BS for a dealer to commit one way or the other when they haven't even seen your truck for the problem you say you have? I don't think the dealer was being unreasonable. Unless pressed, I think the smart thing for the dealer to do is not say anything until they look at the problem. Not all dealers are crooked you know.

 

In California it's a rare thing to be a honest dealer.

 

Sorry, as a warranty provider I'd have said the same thing.

They didn't say 'no'. They said they didn't 'know'. Which is actually true until they dig into it, which they had not done.

If you have done all your additions perfectly, there's no problem and they'll do the repair under warranty. If you didn't.............

One of the risks of modifications.

Hope you find it and can correct it yourself.

 

I hear you, going to a different dealer this Saturday closer to home see what they got to say

 

Where did you take it??? Frontier?

 

Thank you will look into that and all modifications where done correctly I'll have to get in there and just double check I heard to check the tow connection that could be an issue affecting it

 

Mission hills

 

I was looking for the tail light relay like in the diagram you sent me but I don't seem to find it do you know where it could be?

 

Cold and raining here, but it should be in the box right behind the battery.