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Old 06-26-2016, 08:17 PM   #1
Registered User
Join Date: Jan 2016
Location: des moines iowa
Posts: 4
My Ride: e46 m3 smg
Factory stereo /navigation issues

I am having a stereo issue with my factory 03 Mac unit . I have not been able to find any info searching. And have eliminated ground issues and power issues.
Before anyone says to upgrade it's junk. It's not in the budget for the car at the moment .

What is happening is. Intermittent the radio will cut out . Navigation functions with still work . But no radio sound . The Rds will lock up and none of the radio specific buttons work . But then < 30 seconds later it will come back like nothing . Occasionally it will stop all together the power light over the time know will not be in and it will not work until I lull the #41 30amp fuse .
Then it will work fine for a bit .
Any help wod be appreciated
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Old 06-29-2016, 02:41 PM   #2
Registered User
Join Date: May 2015
Location: El Paso, TX
Posts: 1,147
My Ride: `04 M56 Touring
Sounds like a tuner issue, rather than a nav/bordmonitor issue.
I'd not dick with diagnosing and fixing the bm54 tuners guts, rather I'd just buy another used one on eBay.
But that's just me.
If I were to give my Touring a first name, I'd probably name it "Alan".
Mostly because I like puns.

DIY: E46 Touring TV Tuner Install/Mounting
DIY: Wiring City Lights, Rear Fogs, and Rear Camera in a Touring
Onizukachan is offline   Reply With Quote

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