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Press FFWD + Home buttons (around the volume button) and hold for 3-5 seconds, it will reboot.

It has happened twice to me in 3+ years, both times when I put it in gear before everything initialize after pressing the start button.

35854
 

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2021 Bolt Premier
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5,597 Posts
When things really get wonky, check the health of the 12V auxiliary battery, too.

Removing the ground lead on the aux battery can reset things, as well. Just be aware that you could possibly lose custom settings by disconnecting the 12V battery.
 

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2020 Bolt
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582 Posts
Discussion Starter · #7 ·
I always wonder about the 12 volt batt as the car sat a while in the showroom. It was there in Oct of 2020 when i bought my 2021 Camaro and i bought the same car in March of this year.
 

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2022 EUV Premier. 2021 VW id.4 FE. Former owner of 2020 EV Premier.
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295 Posts
Anyone who only has a reboot need happen occasionally is lucky. I have this happen often, almost daily. The infotainment unit we have in our 2020 Premier is either defective or the software is buggy as he**
 

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We just got our bolt a month ago. Carplay seemed to work fine for the first week or so. Then I started noticing glitches where it would freeze up or really slow down and controls such as volume or home would be slow in responding. I didn’t notice any specific pattern for this occurrence. It still works perfectly some of the time.

My wife has had a worse experience on her commute. Carplay works fine in the morning. But on her way home it has caused the exact symptoms the OP describes where the radio turns off on occasion, or carplay stops working.
iI’s been hot here lately and given it only has happened in the afternoon after the car has been parked outside, perhaps the heat has something to do with it?
 

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2020 Chevrolet Bolt
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5,658 Posts
We just got our bolt a month ago. Carplay seemed to work fine for the first week or so. Then I started noticing glitches where it would freeze up or really slow down and controls such as volume or home would be slow in responding. I didn’t notice any specific pattern for this occurrence. It still works perfectly some of the time.

My wife has had a worse experience on her commute. Carplay works fine in the morning. But on her way home it has caused the exact symptoms the OP describes where the radio turns off on occasion, or carplay stops working.
iI’s been hot here lately and given it only has happened in the afternoon after the car has been parked outside, perhaps the heat has something to do with it?
If temperature is a factor, it might be a loose connection, faulty heat sink on a processor, bad circuit board at the edge of it's performance. Tough to diagnose an intermittent problem.

Keep in mind that the problem might also be in the cable or the phone connection.
 

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2022 EUV Premier. 2021 VW id.4 FE. Former owner of 2020 EV Premier.
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295 Posts
We just got our bolt a month ago. Carplay seemed to work fine for the first week or so. Then I started noticing glitches where it would freeze up or really slow down and controls such as volume or home would be slow in responding. I didn’t notice any specific pattern for this occurrence. It still works perfectly some of the time.

My wife has had a worse experience on her commute. Carplay works fine in the morning. But on her way home it has caused the exact symptoms the OP describes where the radio turns off on occasion, or carplay stops working.
iI’s been hot here lately and given it only has happened in the afternoon after the car has been parked outside, perhaps the heat has something to do with it?
This sounds very much like what we have seen with our 2020 Premier. In our case it has happened in freezing cold of Ohio winter and heat of Ohio summer. I haven’t noticed temp being a factor. And it has happened with several phones and cables, nothing seems to change the behavior. Seems to me that the startup of the car lags more when we get the CarPlay issue, like it hasn’t fully initialized. Adjusting volume or changing anything including screen HVAC then lags for 20-30s then rapidly catches up. In these cases the sound gets crackly from that point on though and I have to do the famous 2 finger restart.
 

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If it’s a Premier, there’s an amp and a Bose sub in the spare tire well. Check to make sure there’s no water in that well. My 2017 had the radio cut out for 1/2 second to many minutes at times over the past few weeks. Even the turn signal clicker was silent, and there was a static sound coming from the LF door speaker. Radio output would occasionally function. I opened it up today, and found about 3 quarts of H2O in there. I’m drying it out - hopefully it didn’t kill it! Perhaps all Premier owners, at a minimum, should take a look back there?
 

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2020 Chevy Bolt and all Tesla models owned by me and my family
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If it’s a Premier, there’s an amp and a Bose sub in the spare tire well. Check to make sure there’s no water in that well. My 2017 had the radio cut out for 1/2 second to many minutes at times over the past few weeks. Even the turn signal clicker was silent, and there was a static sound coming from the LF door speaker. Radio output would occasionally function. I opened it up today, and found about 3 quarts of H2O in there. I’m drying it out - hopefully it didn’t kill it! Perhaps all Premier owners, at a minimum, should take a look back there?
Interesting...how you tried to figure out how water is getting in there in first place......building up from humidity is quite difficult to have 3 quarts of water...or i may be wrong....it is definitely not insulated from outside temperature vs inside.
 

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As advised above, I opened up the trunk, took out the styrofoam and discovered 3/4-inch of water in the "tire" well. The radio amplifier was partially submerged. I sponged out as much of the water as I could and left the trunk open for 45 minutes to dry. When I tested the radio and turn signals, they functioned properly!!! Thanks for the info!
 

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If you read my post of 2 months ago, my radio stopped working in my 17 Bolt Premier. I opened up the trunk, took out the styrofoam and discovered 3/4 inches of water flooding the radio amplifier. On advice from this forum I removed the water and the radio started working again! For a while. I then tried disconnecting it's wiring harnesses and reconnecting them, thinking they might be corroded That also worked - for a while. Next, I removed the amplifier completely and let it sit outside in mixed sunlight and clouds. I also sprayed an anti corrosion spray into the connectors. That worked great - for a while. The radio seems to initially work great after I start the car for about 5 minutes. Then it goes totally silent along with the turn signals! What should I try next (and don't say "buy a Tesla" - they are too expensive)? Thank you.
 

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2020 Bolt Premier
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Press FFWD + Home buttons (around the volume button) and hold for 3-5 seconds, it will reboot.


It has happened twice to me in 3+ years, both times when I put it in gear before everything initialize after pressing the start button.

View attachment 35854
Radio quit while driving today. Heard a pop and then dead, Sirius XM kept working however. Thanks for the fix ARob, worked like a charm! Screen goes black for about ten seconds or so while rebooting and then all good!
 
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