USB not functional - truck sitting in sun on hot day - USB recovers after ~30 minutes of A/C

[tbroumley]

Thank you!

So I got it installed. It did fix the issue sadly.

 

[theblet]

So I got it installed. It did fix the issue sadly.

It did not fix the problem?

 

[tbroumley]

Sorry, wrote that poorly. It did NOT fix the issue.

 

[Ramroo]

Sometimes mine does not work intermittently lately. Not temperature related.

 

[theblet]

Sorry, wrote that poorly. It did NOT fix the issue.

That’s depressing. Guess we’re stuck with it then. Wonder why the newer trucks do t have this problem. What’s different? I don’t remember your year model.

 

[tbroumley]

2021 Rebel.

 

[godram]

live in Vegas and heat definitely affects front USB’s in the summer, kinda annoying but pretty sure electrical components are 120+ degrees, takes hours for it to come back on sometimes. Bluetooth and rear chargers work though! #firstworldproblems

 

[Mister 4x4]

Just had it happen again today. Temps in West Texas hit 114 today. I hopped in the truck, started it up and the USBs were all inert but the stereo seemed to be working fine otherwise (listened to the local radio station on the way home - remembering why I listen to my USB tunes all the time). The outside temp sensor reading showed 126, which dropped down to 114 about halfway home (11 mile drive). I pulled the USB drive out of the truck and just confirmed functionality on my computer.

I'm hoping it'll be back to normal in the morning. Kinda sucks though, since we're supposed to be in triple-digits for the next few weeks. Last summer was ridiculously hot with over 90 days of triple digits and the system never had issues.

 

[theblet]

Just had it happen again today. Temps in West Texas hit 114 today. I hopped in the truck, started it up and the USBs were all inert but the stereo seemed to be working fine otherwise (listened to the local radio station on the way home - remembering why I listen to my USB tunes all the time). The outside temp sensor reading showed 126, which dropped down to 114 about halfway home (11 mile drive). I pulled the USB drive out of the truck and just confirmed functionality on my computer.

I'm hoping it'll be back to normal in the morning. Kinda sucks though, since we're supposed to be in triple-digits for the next few weeks. Last summer was ridiculously hot with over 90 days of triple digits and the system never had issues.

It actually may have started working again while you were driving, but you would have had to turn the truck off and back on. Some people just pull the fuse, but that’s annoying as well. I don’t remember which fuse it is

 

[Mister 4x4]

Actually, I shut the truck off in the driveway, opened the door for a few minutes & closed it, waited a few minutes, started it back up, and still nada. That's when I pulled the USB drive and brought into the house to check functionality.

This morning, I fired up the truck, popped in the USB drive, and it started playing the same tune in the same place it left off with when I parked it after lunch yesterday. I guess sittin' in the sun at 114 for 4-5 hours is some kind of a threshold or something. It was only 108 today, and didn't have any problems. As long as it keeps coming back after something like that, I'll just consider myself lucky and not freak out over it.

Thanks for the words of encouragement.

 

[Royal27]

Actually, I shut the truck off in the driveway, opened the door for a few minutes & closed it, waited a few minutes, started it back up, and still nada. That's when I pulled the USB drive and brought into the house to check functionality.

This morning, I fired up the truck, popped in the USB drive, and it started playing the same tune in the same place it left off with when I parked it after lunch yesterday. I guess sittin' in the sun at 114 for 4-5 hours is some kind of a threshold or something. It was only 108 today, and didn't have any problems. As long as it keeps coming back after something like that, I'll just consider myself lucky and not freak out over it.

Thanks for the words of encouragement.

I have never had this issue on my 2019 until yesterday. It was in this crazy Texas heat all day, then worked after dinner last night. It did it again today.

I know it has been this hot since I had the truck but maybe I just haven't let it sit all day. Who knows?

My dealer has lately had a week to two weeks wait times just to look at a problem so no sense taking it in unless they permanently turn off! So ridiculous that they are that back logged consistently....

 

[theblet]

I have never had this issue on my 2019 until yesterday. It was in this crazy Texas heat all day, then worked after dinner last night. It did it again today.

I know it has been this hot since I had the truck but maybe I just haven't let it sit all day. Who knows?

My dealer has lately had a week to two weeks wait times just to look at a problem so no sense taking it in unless they permanently turn off! So ridiculous that they are that back logged consistently....

From what others have experienced, the dealer will more than likely change the usb hub. You may get the newest revision, but for most the issue still remains because it had the same thermistor cutoff. Some folks say pulling fuse f43 to reset it works. It doesn’t start working again while you’re driving, even tho the temp comes down. It takes a reset.

I’d like to know where the thermistor is and if we can put in a different one or eliminate it completely. If not can a switch be put on the positive wire feeding the hub so we can reset it in real time while driving once cabin temps come down.

 

[cnewman402]

Replace it yourself. $30-45. Super easy. See here: 2021 Ram 1500 Bighorn Media Hub Replacement

 

[theblet]

Replace it yourself. $30-45. Super easy. See here: 2021 Ram 1500 Bighorn Media Hub Replacement

Thanks. This is the one I ordered. For mine I’ll have to take out the center console.

 

[howster]

Happened to me also today. 2019 Ram 1500 Laramie. Android Auto wouldn't work in 90F and after driving for 30 mins it suddenly worked. Watched a video of a guy replace the hub and that did NOT fix the issue. Strangely the USB port seems to charge the phone (charge icon shows on phone) but the data connection for Android Auto didn't work. It's a well known problem so don't know why Ram aren't offering a fix.

 

[RamCares]

Happened to me also today. 2019 Ram 1500 Laramie. Android Auto wouldn't work in 90F and after driving for 30 mins it suddenly worked. Watched a video of a guy replace the hub and that did NOT fix the issue. Strangely the USB port seems to charge the phone (charge icon shows on phone) but the data connection for Android Auto didn't work. It's a well known problem so don't know why Ram aren't offering a fix.

We can understand your frustration with having Android Auto concerns. Our team would like to look into this where able. Please send us a private message with more details of what you're experiencing for further assistance.

Chris,
Ram Cares

 

[Ciege]

We can understand your frustration with having Android Auto concerns. Our team would like to look into this where able. Please send us a private message with more details of what you're experiencing for further assistance.

Chris,
Ram Cares

Sure would be nice to have a real fix for this. My 2019 is out of warranty, but I've had the issue every summer (already happening this summer). And never able to reproduce or fix when it was in warranty. Very frustrating!

Sent from my Pixel 7 Pro using Tapatalk

 

[theblet]

Sure would be nice to have a real fix for this. My 2019 is out of warranty, but I've had the issue every summer (already happening this summer). And never able to reproduce or fix when it was in warranty. Very frustrating!

Sent from my Pixel 7 Pro using Tapatalk

Did you change the usb hub? One way to find out if it is the issue is to drive for 20 minutes when it’s not working, then pull the fuse under the dash, put it back in. If it’s works then it’s the usb hub

 

[Ciege]

Did you change the usb hub? One way to find out if it is the issue is to drive for 20 minutes when it’s not working, then pull the fuse under the dash, put it back in. If it’s works then it’s the usb hub

I have not since there has been many conflicting responses as tk this working or not.

Sent from my Pixel 7 Pro using Tapatalk

 

[theblet]

I have not since there has been many conflicting responses as tk this working or not.

Sent from my Pixel 7 Pro using Tapatalk

Start reading from here. If you reset fuse F43 under the dash after driving for 10 minutes and it starts working it’s probably the USB hub. Just don’t order the first one I mentioned. Get version 68397098ae or newer.

Post in thread 'USB and CarPlay doesn’t work when hot outside. '
USB and CarPlay doesn’t work when hot outside.