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  #1  
Old 05-15-2012, 02:50 AM
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Radio won't turn on

Been having a couple of problems on the e53 with the radio. Was a few times where the radio would not shut off, even after turning off the car. It would eventually turn off, I don't remember exactly how long it took or what I did, if anything, to get it to turn off.
Now, I shut the car off, while the radio was on, then came back 5 minutes later, started the car, and no radio. Pushing the 'On" button does nothing. All nav, board monitor and other functions work as normally.
I have pulled all the fuses related to the radio, turned the ignition on with the fuses out, replaced the fuses, still nothing. Have also unhooked/rehooked the battery.

Any other ideas?
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  #2  
Old 05-16-2012, 11:00 AM
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Try unplugging and reseating the main connector on the tuner module in the trunk.
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Old 05-16-2012, 12:56 PM
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Try unhooking the battery again but this time wait a few minutes. once you reconnect the battery cables, the security system will count down and ask for your code. Hopefully this resets the system.

NOTE: Make sure you have the 4 digit security code.

My radio did something similar sometime back (not turn on - didn't have the on problem when the car was off though). It might be a low/faulty battery that could cause the system to act up.

Good luck.
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Old 05-16-2012, 07:07 PM
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Sounds like effects of water damage, remove the radio unit's top lit and take a peek inside. Traces of the corrosive damaged done by water in live systems are easily visible.
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Old 05-18-2012, 10:13 AM
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Quote:
Originally Posted by hoaesq View Post
Try unhooking the battery again but this time wait a few minutes. once you reconnect the battery cables, the security system will count down and ask for your code. Hopefully this resets the system.
Make sure you power down the nav drive correctly **before** you unhook the battery though or you wil brick the nav computer.

Or you could try poping fuses 7 and 41 wait 30seconds and then pop them back in this will reset the radio as well.
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Old 05-18-2012, 01:14 PM
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Good point. I forgot about the powering down.
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