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#21
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After being "asleep" in the garage for a few hours, I went out to check and the red light by the gear shift was back on, then turned off seconds later as I stood there. So something is waking the car back up randomly.... (And thanks "Overboost," but I'm not messing with the soldering/electronics myself.) Last edited by HotWheelsRedline; 08-30-2017 at 10:56 PM. |
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#22
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Unplug fuse 74 in the back or your cargo area. This is for the TCU. This is what was waking my system up and killing my battery. Do you have any devices like Dice or anything tapped into the K Bus? My TCU went bad and pulling fuse 74 solved my drain. Replaced the TCU and all good again.
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Digital Competition Systems The older I get... The faster I was... No Fear |
#23
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Possibly a dumb question, but isn't the cluster just a bunch of gauges? Could the cluster awaken the car/system by itself? Also, somebody mentioned "uploader relay" -- where do I look into that?
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#24
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and no add-on devices. |
#25
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You might just try it, for a couple of days. You will only lose bluetooth if you are using it. CAN bus errors can trigger just because of traffic on the bus. Mine had the same errors with the bad TCU. Temp gauge I have no idea other than it could have been the diagnostic tests they were doing...
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Digital Competition Systems The older I get... The faster I was... No Fear |
#26
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#27
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Oh seeing the can bus errors that was something else my tcu was causing besides just killing the battery all on its own.
After removing it I have no errors and the battery doesn't die. Of course as I imagine most noticed that ran across my radio install thread I removed the factory radio now so now I don't have the tcu, factory nav disc unit or cd changer draining power either
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Just BMW's - All cars and trucks was two pages long 1994 318is 1997 528i 2000 323i 2001 X5 3.0 auto 2005 X5 3.0 auto 2011 535xi auto 2013 X5 xdrive35 Turbo More are at my website Aftermarket E53 Radio Install |
#28
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#29
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Pull the fuse for your NAV. That's another common culprit as is the FSR.
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#30
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Yup, I've gone thru all the common culprits (NAV, radio, FSU, etc.), as have two BMW techs with diagnostic equipment. That's what led to the instrument cluster diagnosis, but no guarantees it will solve the problem either.
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