Audio Head Unit Power Cycling

atr_hugo · 07-24-2009, 04:24 PM

Here's a cheap vid of what my head unit is doing. Everything is stock. Haven't shown this to the dealer yet (and intend to as soon as I can schedule a visit), but I know that BMWNA trolls the forum and they might like to see this too. ; -)

This on/off cycling happens for about 10 minutes, and then it acts normally; it doesn't happen all the time.

atr_hugo · 07-29-2009, 12:20 PM

Got past the dealer today - they say replace the head unit. So it goes in mid-August to have it's HU sucked out and a new one plopped in it's place. We'll see . . .

93accordEX · 07-29-2009, 02:57 PM

how often did this happen? My girlfriend said something similar happened to her car once. Also one time when we had just got in the car before putting the key in with the radio off the speakers just started playing static... It was sort of creepy actually. Neither of those events ever happened again though so I guess there's not much to do at this time.

atr_hugo · 07-29-2009, 03:15 PM

Happens infrequently - less than 10 times in a year. If you have a regular radio station tuned, CD, or iPod it still occurs. Even if the audio is off the time/date display will go on/off also. So it's gotta be the head unit or a relay that's between the HU and +12v supply.

atr_hugo · 08-12-2009, 03:02 PM

OK - here's the updated skinny BMW has an SIB on my exact issue and it's waiting on software too:

This Service Information bulletin supersedes SI B65 16 09 dated June 2009.

designates changes to this revision

SUBJECT
RAD2: Audio and/or Radio Display Is Intermittently Inoperative

MODEL
E82, E88 * (1 Series) from start of production

E89 * (Z4) from start of production

E90, E91, E92, E93 * (3 Series) from 09/2007

*with option 663 (Radio Professional, RAD2)

SITUATION
The radio is intermittently inoperative:

* No audio output

* No radio display function

The radio operates correctly when switched on again after sleep mode.

CAUSE
Software issue in the RAD2

INFORMATION
Do not replace parts! Please explain the cause of the problem to the customer. This Service Information will be updated as soon as an improvement is available.

WARRANTY INFORMATION
For information only

PatNarciso · 12-09-2009, 09:28 PM

Sometimes my radio will not power on, I'll have clock radio and other controls, but zero audio controls, including no gong audio.

135i w/o iDrive.

07-24-2009, 04:24 PM	#1
atr_hugo No longer moderate 325 Rep 4,401 Posts Drives: '13 135i Join Date: Jun 2007 Location: - iTrader: (0)	Audio Head Unit Power Cycling Here's a cheap vid of what my head unit is doing. Everything is stock. Haven't shown this to the dealer yet (and intend to as soon as I can schedule a visit), but I know that BMWNA trolls the forum and they might like to see this too. ; -) This on/off cycling happens for about 10 minutes, and then it acts normally; it doesn't happen all the time.
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07-29-2009, 12:20 PM	#2
atr_hugo No longer moderate 325 Rep 4,401 Posts Drives: '13 135i Join Date: Jun 2007 Location: - iTrader: (0)	Got past the dealer today - they say replace the head unit. So it goes in mid-August to have it's HU sucked out and a new one plopped in it's place. We'll see . . .
	Appreciate 0 Quote

07-29-2009, 02:57 PM	#3
93accordEX Enlisted Member 2 Rep 43 Posts Drives: 07 335i montego/terra Join Date: Feb 2006 Location: NY iTrader: (0)	how often did this happen? My girlfriend said something similar happened to her car once. Also one time when we had just got in the car before putting the key in with the radio off the speakers just started playing static... It was sort of creepy actually. Neither of those events ever happened again though so I guess there's not much to do at this time.
	Appreciate 0 Quote

07-29-2009, 03:15 PM	#4
atr_hugo No longer moderate 325 Rep 4,401 Posts Drives: '13 135i Join Date: Jun 2007 Location: - iTrader: (0)	Happens infrequently - less than 10 times in a year. If you have a regular radio station tuned, CD, or iPod it still occurs. Even if the audio is off the time/date display will go on/off also. So it's gotta be the head unit or a relay that's between the HU and +12v supply.
	Appreciate 0 Quote

08-12-2009, 03:02 PM	#5
atr_hugo No longer moderate 325 Rep 4,401 Posts Drives: '13 135i Join Date: Jun 2007 Location: - iTrader: (0)	OK - here's the updated skinny BMW has an SIB on my exact issue and it's waiting on software too: This Service Information bulletin supersedes SI B65 16 09 dated June 2009. designates changes to this revision SUBJECT RAD2: Audio and/or Radio Display Is Intermittently Inoperative MODEL E82, E88 * (1 Series) from start of production E89 * (Z4) from start of production E90, E91, E92, E93 * (3 Series) from 09/2007 with option 663 (Radio Professional, RAD2) SITUATION The radio is intermittently inoperative: No audio output * No radio display function The radio operates correctly when switched on again after sleep mode. CAUSE Software issue in the RAD2 INFORMATION Do not replace parts! Please explain the cause of the problem to the customer. This Service Information will be updated as soon as an improvement is available. WARRANTY INFORMATION For information only
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12-09-2009, 09:28 PM	#6
PatNarciso New Member 0 Rep 14 Posts Drives: i135 Join Date: Dec 2009 Location: All over the state of FLA iTrader: (0)	Sometimes my radio will not power on, I'll have clock radio and other controls, but zero audio controls, including no gong audio. 135i w/o iDrive.
	Appreciate 0 Quote