Question about Sony CDX-GT540UI - CD/MP3 Receiver

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Sony Car Stereo CDX GT540UI Buttons Unresponsive

My car radio randomly stopped working when I went to start my car one day. This problem has happened twice before, but I was able to correct it by holding down a few buttons. I can't seem to correct the issue this time though. The buttons on the face plate are completely unresponsive unless I quickly press the eject button once I start the car or take off the face plate and put it back on. When I do this I am able to cycle through the different sources by pressing the eject button, or I can control the volume by holding down the eject button and turning the volume nob. Also, pressing the eject button once will turn the radio off. I have read over the user manual for solutions, and have also tried pressing the reset button as well as holding down the reset button for ten seconds with no results.

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  • JL Vega
    JL Vega Oct 11, 2013

    Hi. I have exactly the same problem and the stereo have the same behavior when tak the faceplate off. Do you find a solution?

  • Patrick Berger Oct 21, 2013

    I never was able to find a solution for the problem and
    ended up having to buy a new stereo.
    From other forums that I've read, it sounds like there is a harness
    adapter needed to hook up new stereos to certain cars that have OnStar ability
    even if they do not use OnStar. There is
    a work around to get the radio to work without the adapter, but my guess is
    that if you install the new stereo without the adapter the stereo will
    eventually begin to have problems and fail.
    Here's a link to a forum which discusses the issue,


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Posted on Jan 02, 2017

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SOURCE: My buttons on the stereo will not work. the only button that is working is the source button. I do not know what happen nor how to fix this issue. It's very annoying. I just bought the stereo last

If the stereo is less than one year old return it for repair or exchange.

Posted on May 31, 2012

  • 94 Answers

SOURCE: Faceplate not responding / acting very weirdly

Sounds like a bad connection with the faceplate and the multi connector that the faceplate mates with when closed. check for dirt and bent pins on both connectors. Luck

Posted on May 04, 2007

  • 2039 Answers

SOURCE: Please Help

check face plate maybe contact dirty if not well our in trouble sometime it not worth to repair it cheers

Posted on Jan 14, 2008

  • 639 Answers

SOURCE: Works, but goes into protect when you turn up/down volume

If its new call Sony and get service????????????

Posted on Aug 28, 2008

  • 2 Answers

SOURCE: STR-DE445 Works, but goes into protect when you turn up/down volume

This is a piece of **** unit. Mine only works on the left side, sometimes. When those times are I have NO idea. It doesn't seem to play 5.1 correctly and it goes into speaker protect mode for NO reason. It is TRUE lemon !!! ..let me know if you have any other problems with this JUNK

Posted on Aug 28, 2008

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