2024 Limited Trailer Backup assist malfunction

So after 3000 miles and my first tow, I have an issue with the TBA function. I calibrated the system as per the manual and everything seem to work fine. I unhooked and dropped the trailer and as I pulled away I got a “trailer backup assist malfunction” warning on my dash. I have also lost all of the grid lines for my backup camera and I cannot change the backup camera views. I can’t seem to find too much info online, so it’s off to the dealer. Curious to see what they have to say about this malfunction..

 

keep us posted, I'm hesitating having to deal with this for the boat.

 

Something similar here as well. '24 has about 2,500 miles on it. Took the camper out for the first time and decided to play with the backup assist. Camper spec's saved to garage, found a spot to do the alignment steps (1-6), all worked fine. Went to campground and shut truck off at gate to go register. Got to the site and tried the TBA and it knew nothing about the trailer... like it lost the alignment. Asked to do the procedure all over again which I cancelled out of.

On the way home, I found a spot to try the alignment again thinking I did something wrong. Calibrated and tested. Worked fine until you shut the truck off or manually turn off the TBA on the console. At that point, it loses its mind and knows nothing about the alignment, and its impossible to complete a trailer alignment at that point.

Tried it with my small boat trailer... same thing. But in testing out the various scenarios, also discovered that the trailer calibration will fail every time after that point. The only way to get it back was to delete the trailer from the garage and reenter it. But again, you get back into this cycle of it not working as soon as you either shut the truck off or manually turn off TBA after calibration.

And at one point in testing all of this, I lost all camera views. Screen went black. Luckily I was able to get it all back by turning the truck off and restarting it.

Called Dealer service and they are stumped. Need some time to research and figure out how to diagnose. I can reproduce this at will. Something is wrong with the software for sure.

 

I’m having the same issue with mine. Set up the trailer and calibrate the TBA and it works, turn the TBA or the truck off and it won’t detect the trailer. If you delete the trailer and set the system up again it will work until you shut the TBA or truck off.

 

The dealership I use is stumped, but they did tell me that Toyota is aware of the issue. They told me to delete my camper from the truck, re-enter it and then hook up and drive for ten minutes.. after that they told me to go into the setttings and “deselect” my camper. Well I humored them and tried that theory and it did absolutely nothing. My back up camera is frozen on one screen, with no grid lines whatsoever. At this point I would be happy just to get my camera working, and screw the trailer backup assist.. I really don’t need it anyway… it’s just very frustrating when you pay big money for something that doesnt make sense… you would think that this would be a simple fix for Toyota..

 

I also want to add this, when I took it to the dealership they tried to “delete” my camper settings that I entered into the system, that was also frozen… they had to unhook the battery for ten minutes to be able to delete my settings.

 

Same exact issue with 2024 1794 edition tundra purchased a month ago. Does exact same thing every time as described above by chaser. Dealership stumped as well.

 

I finally have a follow up on the tundra camera issue.. so what needed to be done was a complete calibration on the entire camera system. Dealer had the truck for about a week(assuming that it just sat there until they could get an answer from the higher ups) and they were sent a camera template diagram that they needed to re-create using cardboard cut outs that needed to be placed on the floor behind the truck. I will post a pic of that set up so you have a better understanding of what I’m talking about. Bottom line is that’s what needed to be done, and it worked 100%. Now they don’t know if it will happen again and I won’t know until I tow again, so fingers crossed that it won’t happen again. Even if it does, this dealership has the fix, plus the techs who know how to do the job….

 

My guess is that moving forwards Toyota will come up with an easier fix and possibly issue a recall. I’m having problems with my fuel gauge as well, Im gonna have to research some info on that now…

 

Curious if you towed since then and if it was resolved? I have my 2024 1794 going in on August 7 for exact same issue and have relayed this post to the dealer looking at it.

 

I have not towed since the fix. Now that they have a fix They told me to go ahead and tow to see what happens. I will be towing soon…

 

Hope it goes well. When you’ve had a chance to tow please let me know if the camera recalibration also fixed the trailer backup guide issue as well. Thanks!

 

Trucks at the dealer now for this as well as a couple other minor things. I'll be curious what they come up with. But I shared this with the service manager and he was very appreciative of the info. He said they've had to do the complete camera system recalibration before like was described above for other issues.

The sales guy that sold me the truck has a 23 Tundra and we hooked up my trailer to his truck and he had none of the issues with the TBG that I'm experiencing in the 2024 1794 I have. In fact, one thing of note is that during the initial TBG calibration 6 step process, I had to drive about half the distance in his truck vs mine in step 1 of the calibration process for the TBG to find the trailer and finish the calibration process. Thought that was interesting.

 

They are telling me the computer board that controls this functionality needs to be replaced. Should happen sometime early next week. Will post if that fixes the issue.

 

Found this thread after a similar dash error tonight. Is this what y’all were seeing as well?

 

Yes

 

Got it. Mine showed up one day (after towing) and has been gone since. Best of luck that they get yours fixed.

 

The repair was to replace the parking assist ECU and recalibrate the cameras. I verified the fix by attaching the trailer, recalibrating the TBG and the problem is now gone.

Have you tried towing agin using the TBG after that showed up? Did it work ok?

 

I haven’t towed since getting the error pictured above but your info is helpful if the problem resurfaces. Thank you.

 

You'll know it if your original calibration is gone. You can calibrate again when you engage the TBG, but it will only work until you deactivate the TBG or turn the truck off. Then it will tell you "trailer not detected" if you engage the TBG again and trailer is hooked up.

 

I have not towed with mine yet except little four wheeler trailer and did not use the assist function. Is any of these errors persisting / messing things up AFTER the trailer is disconnected / removed?

Meaning - if I tow a trailer for one time use over a weekend and try to use the trailer assist….should I not do that because it’s gonna screw things up and I won’t even need to tow that trailer again, ever….so should I avoid even attempting to use is my question.

 

I would definitely try and use especially if your truck is still within the 36k mile bumper to bumper warranty period. Because if it is a problem on your vehicle much better to get addressed within the warranty period when it doesn’t cost you anything but some time and inconvenience of a loaner possibly

the only problem I had was the TBG calibration not sticking with the trailer. I didn’t have any problems with cameras getting messed up like a few have reported. Having said that, you don’t need cameras or the TBG to normally drive your vehicle - but much better to figure out now its an issue if it’s a newer vehicle.

 

Not exactly the same thing but our Tundra registers vehicle alerts when we use our trailer but not all the time. We took it in because it set a bunch of alerts. Vehicle Stability, Check Engine, Pre-Collision System, Parking Brake System, Secondary Collisions system... all got set. After they looked at it they asked if we towed a trailer. Then they said all these got set because our trailer connection has a problem. We've driven with our trailers multiple times but this just started happening. They reset all the alerts and then it didn't happen again for a few trips. Then it did but this time it was the Smart Stop system, Pre-Collision System, and Automatic High Beam... What the heck?! We're going back in on Monday and we'll see what they say.