High pitch beep then Combox resets when a call is received?

Len_Beach · 11-19-2015, 04:39 PM

I have a retrofitted Combox which has been working without issue for nearly 2 years.

I have had a ghost code (E1CF) since swapping out the TCU but this didn't cause any issue.

I have recently had an issue whereby the Combox emits a single high pitch beep whenever a call connects then the Combox resets. This leaves error code A8F9.

Any ideas on why this has suddenly become an issue?

kaputme · 08-15-2016, 06:00 AM

Did you solve this??

Seems like some times My combox resets/reboots. I'm using my Ipod connected to the USB port in the armrest and suddenly the combox resets and switches to Radio.

I don't know if its because of accessing BMW live when there was no tethering activated (sometimes i forget)

11-19-2015, 04:39 PM	#1
Len_Beach Major 191 Rep 1,245 Posts Drives: 435d Join Date: Jun 2011 Location: UK iTrader: (1)	High pitch beep then Combox resets when a call is received? I have a retrofitted Combox which has been working without issue for nearly 2 years. I have had a ghost code (E1CF) since swapping out the TCU but this didn't cause any issue. I have recently had an issue whereby the Combox emits a single high pitch beep whenever a call connects then the Combox resets. This leaves error code A8F9. Any ideas on why this has suddenly become an issue?
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08-15-2016, 06:00 AM	#2
kaputme Private First Class 17 Rep 176 Posts Drives: E90 2009 Join Date: Jan 2015 Location: Germany Aachen iTrader: (0) Garage List 2009 BMW E90 [8.00]	Did you solve this?? Seems like some times My combox resets/reboots. I'm using my Ipod connected to the USB port in the armrest and suddenly the combox resets and switches to Radio. I don't know if its because of accessing BMW live when there was no tethering activated (sometimes i forget)
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