radio problems

[Nerijus]

Hi,

For several years now I have been facing problems with the radio screen and the radio itself, I have been to many electricians who have done diagnostics and similar but nothing has helped. I have a Buick regal 2015 and the problem is that after a night or even a short time I want to start the engine and when it starts my screen is just black. It does not respond to any touches, just a black screen. and only after using the sound signal it turns off. Maybe someone has encountered such a problem and knows how to solve this problem

 

[bugspop1]

You might want to try Accessing the HMI and Reseating all the Plugs.
Being intermittent, it sounds like something is loose.
I've had similar problems (like below), but mine wasn't Intermittent, the screen was
Black and the Touchscreen didn't work 100% of the time.
I've also added my original posts (in a Quote Below) about this problem and everything I checked.

I had replaced my HMI and Radio Module about a year after buying my 2015 Regal.
I wanted to have Apple Car Play and Android Auto in my 2015 Regal but this option didn't
come out until 2016 (the Radio was working flawlessly at that time).
About two years later, I drove to Home Depot (everything was fine, the Touchscreen was working).
When I got back in the car to leave, my Touchscreen was Black and the touchscreen
didn't work (no backup camera either).
I was able to listen to the Radio, but I had to change the stations using the Steering Wheel Controls.

It took me a week or two, but I finally figured out that the 2.5 HMI Module I had purchased (Used),
reprogrammed to my VIN and installed, went bad.
I ended up Troubleshooting by reinstalling my Old 2.0 HMI Module, voila' the Touchscreen worked again.
I purchased a New 2.5 HMI Module (having it Programmed to my VIN) and replaced the
Original 2.0 HMI Module (for the second time) with the New 2.5 HMI Module.
I was pretty glad that I kept my Old 2.0 HMI Module.

Anyway, my bet is that your HMI Module is on it's way out (working intermittently).
Electronics are very hard to Diagnose when they are working intermittently.
Mine just Stopped working completely and never gave me a warning.
Also, mine didn't give me any Sound Signals, the screen just went Black & stayed Black
and the Touchscreen didn't work!

BTW, you won't be able to just replace the HMI, you'll need to have it Programmed to your VIN.
Doesn't matter if you use a 2.0 HMI or a 2.5 HMI, it will have to be programmed to your VIN.

• May 21, 2024

I'm gonna take my car over and have the Battery Checked.
Went to Home Depot about a week ago to pick up some
Top Soil.
When I got back in the car to leave, the Touchscreen was Black.
I turned off the car and restarted, Still Black.
The Radio works, but the Radio Controls underneath the
touchscreen don't work .
I still have use of the Steering Wheel Controls, so I can change
the Preset Stations and also adjust the volume, but that's it!
No Back Up Camera, Although Park Assist still works (it Beeps).
No CD Player, No USB, etc...

I disconnected both Battery Cables for half an hour or so.
It didn't work, still have a Black Screen.

I did visually check all the Fuses that had to do with the Radio
and Touchscreen, nothing blown that I can see.
I do have a Test Light to check the fuses (going to check all fuses),
just been too hot the last few days.

The Voltage on the Information Screen shows 14.4v, pretty normal.
But it won't hurt to have my battery check, it is 4-5 years old now.

Really hoping it's something simple and I don't have to tear apart
the Dash again!

​

• May 27, 2024

I checked everything I could think of as to why my Touchscreen/Radio Controls
wasn't working.
I Disconnected the Battery for 2 hours the other day, replaced all the fuses one
at a time, nothing worked.
I did take the car over and had the battery checked, they said it was in A+ condition.
I removed the Backup Camera Fuse instead of disconnecting the Backup Camera,
just too much work to disconnect the camera, still didn't work.

I Checked all of the Electrical Devices in the car to make sure they still worked (Power Windows, Power Door Locks, Power Sunroof, Power Mirrors, Heat, AC, Garage Door
Opener, USB, Cigarette Lighters, Cruise Control, Park Assist, Traction Control, Electronic Parking Brake, All Lights, Trunk release, etc...); everything worked except the Touchscreen/Radio Controls, CD Player, Bluetooth .

I got out my Old 2.0 HMI and Radio Module.
I tore apart the Dash and Replaced the 2.5 HMI with the 2.0 HMI and Voila, the
touchscreen worked, I'm Lucky I didn't sell the 2.0 HMI and Radio Module on Ebay.
There goes my Car Play/Android Auto Upgrade, as the 2.0 HMI doesn't support
Car Play/Android Auto.
Too expensive to Replace that HMI again. last time it was almost $1000 and I
did all the work installing it (not a shop).

 

[mami3443]

sorry about that.