Start stop shuts down and restarts the head unit

madmedman · 10-22-2018, 08:11 AM

Hi there. Apologies for multiple posts. I asked this question in my regional forum as well but posting here to request help from wider audience.
My f30 has a mosconi gladden system installed by a pro. Since then most of the time the audio, picture from the head unit stops for a few seconds and restarts. The same channel or song is playing though. I could hear the rear speakers only very faintly. This happens on a second and further start stop cycles.

Any suggestions for me please. I don’t want to code out the start stop as I’m planning to sell this car and need it to be in perfect condition.

Internet search came up with a voltage stabilizer but that was for older models.

Any pointers will be appreciated.

Thanks.

Billfitz · 10-22-2018, 10:25 AM

Normally the ASS doesn't affect the radio. If the battery is weak it might shut the radio down during re-starts, so if this problem is recent that's where I'd look. If the problem has existed since the installation then the installation is at fault.

madmedman · 10-22-2018, 11:52 AM

Quote:

Originally Posted by Billfitz

Normally the ASS doesn't affect the radio. If the battery is weak it might shut the radio down during re-starts, so if this problem is recent that's where I'd look. If the problem has existed since the installation then the installation is at fault.

Thanks. I’m going to get someone to have a look at the installation. I found the process too daunting hence got help installing. Also this is a 2012 model and I bought it two years ago. Hence not sure when the battery was changed. I guess these are the two things I need to check out.
Thanks again.

Would the dealer refuse to have a look at it since it’s aftermarket?

Billfitz · 10-22-2018, 12:53 PM

Dealers tend to take your money when you're willing to part with it. Whether they can help you or not is a different story.
When I do use my ASS the only item that gets a momentary shutoff when the car restarts is my radar detector, which is powered off the console 12v outlet. That's because the power management system doesn't think something plugged into that outlet is a critical item. My radio and iDrive never go down. My first instinct is to believe your installer connected the system to the wrong power source.

madmedman · 10-23-2018, 09:53 AM

Quote:

Originally Posted by Billfitz

Dealers tend to take your money when you're willing to part with it. Whether they can help you or not is a different story.
When I do use my ASS the only item that gets a momentary shutoff when the car restarts is my radar detector, which is powered off the console 12v outlet. That's because the power management system doesn't think something plugged into that outlet is a critical item. My radio and iDrive never go down. My first instinct is to believe your installer connected the system to the wrong power source.

Thanks. That makes perfect sense. I need to familiarize myself with the audio installation and will check when the installer did wrong. But I guess I will need to find help in my area. I don’t believe this would be a matter of checking connections at the battery terminal? If it is, can I upload a pic of the connections to get your advice?

sivaengn · 07-15-2019, 02:31 PM

My 2014 320i facing similar issue, the CIC restarts automatically every minute. Worried to take it to dealer.

bimmer456 · 07-15-2019, 02:44 PM

Not sure if it was mentioned in this thread but I read somewhere that it could be due to a bad 12v battery. So the head unit is shut off to preserve enough juice for the restart.

J-RO · 07-15-2019, 04:01 PM

Code the ASS out.

bimmer456 · 07-15-2019, 04:09 PM

Quote:

Originally Posted by sivaengn

My 2014 320i facing similar issue, the CIC restarts automatically every minute. Worried to take it to dealer.

Take it to an Indy.

upsidedownfunnel · 07-15-2019, 06:31 PM

If you paid a lot of money for a professional install, you definitely should take it back to these professionals and have them look at it again. If they can't figure it out, or refuse to help, then have a good independent shop look at it. It could be a lot of different things, but when you pay someone to install something, generally they are on the hook to get it right. I'm assuming you paid quite a bit of money for this system and installation as well.

Also, coding out start-stop is a very minor, easy, and reversible modification. I'm surprised you are averse to coding out start/stop, but you installed an expensive aftermarket audio system which involves splicing audio and power wires, mounting hardware into the sheetmetal, and straining the car's alternator and battery. By comparison, changing the stop/start setting is nothing. It is basically a hidden setting. If you're worried about it, just pay the dealerships to do it, they might even do it for free.

10-22-2018, 08:11 AM	#1
madmedman Lieutenant 275 Rep 426 Posts Drives: G82 M4 Comp Join Date: Nov 2017 Location: Kent, UK iTrader: (0)	Start stop shuts down and restarts the head unit Hi there. Apologies for multiple posts. I asked this question in my regional forum as well but posting here to request help from wider audience. My f30 has a mosconi gladden system installed by a pro. Since then most of the time the audio, picture from the head unit stops for a few seconds and restarts. The same channel or song is playing though. I could hear the rear speakers only very faintly. This happens on a second and further start stop cycles. Any suggestions for me please. I don’t want to code out the start stop as I’m planning to sell this car and need it to be in perfect condition. Internet search came up with a voltage stabilizer but that was for older models. Any pointers will be appreciated. Thanks.
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10-22-2018, 10:25 AM	#2
Billfitz Lieutenant General 8239 Rep 16,075 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Normally the ASS doesn't affect the radio. If the battery is weak it might shut the radio down during re-starts, so if this problem is recent that's where I'd look. If the problem has existed since the installation then the installation is at fault.
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10-22-2018, 12:53 PM	#4
Billfitz Lieutenant General 8239 Rep 16,075 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Dealers tend to take your money when you're willing to part with it. Whether they can help you or not is a different story. When I do use my ASS the only item that gets a momentary shutoff when the car restarts is my radar detector, which is powered off the console 12v outlet. That's because the power management system doesn't think something plugged into that outlet is a critical item. My radio and iDrive never go down. My first instinct is to believe your installer connected the system to the wrong power source.
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07-15-2019, 02:31 PM	#6
sivaengn Registered 0 Rep 2 Posts Drives: BMW 2014 320i Join Date: Jul 2019 Location: Fremont iTrader: (0)	My 2014 320i facing similar issue, the CIC restarts automatically every minute. Worried to take it to dealer.
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07-15-2019, 02:44 PM	#7
bimmer456 Major General 2960 Rep 5,992 Posts Drives: 340i Join Date: Nov 2016 Location: Pasadena, CA iTrader: (0)	Not sure if it was mentioned in this thread but I read somewhere that it could be due to a bad 12v battery. So the head unit is shut off to preserve enough juice for the restart.
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07-15-2019, 04:01 PM	#8
J-RO Lieutenant Colonel 2094 Rep 1,860 Posts Drives: BMW M240ix Join Date: Jun 2019 Location: A Place I Like To Call “You’ll See” iTrader: (0)	Code the ASS out.
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07-15-2019, 06:31 PM	#10
upsidedownfunnel Colonel 1996 Rep 2,499 Posts Drives: 2014 335i Join Date: Jul 2017 Location: SoCal iTrader: (4) Garage List 2014 BMW 335i [0.00]	If you paid a lot of money for a professional install, you definitely should take it back to these professionals and have them look at it again. If they can't figure it out, or refuse to help, then have a good independent shop look at it. It could be a lot of different things, but when you pay someone to install something, generally they are on the hook to get it right. I'm assuming you paid quite a bit of money for this system and installation as well. Also, coding out start-stop is a very minor, easy, and reversible modification. I'm surprised you are averse to coding out start/stop, but you installed an expensive aftermarket audio system which involves splicing audio and power wires, mounting hardware into the sheetmetal, and straining the car's alternator and battery. By comparison, changing the stop/start setting is nothing. It is basically a hidden setting. If you're worried about it, just pay the dealerships to do it, they might even do it for free.
	Appreciate 0 Quote