Do I have an electrical problem or stereo head unit problem?

Tiny
PPETE410
  • MEMBER
  • 2007 INFINITI M35
  • 3.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 190,120 MILES
When I first turn on my car the stereo and A/C works fine but as soon as the car reaches temperature the radio, GPS screen turns off and the A/C turns on and I have no control over it. I would appreciate any help you can give. Also, I'm located in the Baltimore area, any advice on where to go to get this fixed is very much appreciated? Thank you
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Sunday, June 25th, 2023 AT 11:06 AM

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Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,235 POSTS
This is not a radio problem; this sounds like a classic IPDM problem which controls the power and operation of the systems mentioned. To be sure we should do a CAN scan, you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Here is one for about $99.00 if you need it:

https://amzn.to/3ZixY4v

Here is how to change the IPDM out in case you need it. It is easy to replace because it-self learns.
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Sunday, June 25th, 2023 AT 3:46 PM

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