Headunit display stuck on BMW screen does not work

Dreier3 · 07-25-2021, 12:07 PM

Hi, I have a 2014 335i with the basic headunit (no nav) and recently it started to die on me. It is stuck on on BMW screen. It reboots every few minutes and loses Bluetooth phone in the process. Then it goes back to just the BMW screen.

I've been reading that this often means the head unit needs to be replaced. Is this certain? Anything else ir could be? I've seen that it is pretty easy to swap out the headunit but how would I get it programmed? Any help would be appreciated.

Orion4 · 07-25-2021, 02:55 PM

Turn car on or acc and depress the volume button for about 30 secs or a little more, display should go black and then start to reboot. That has worked for me several times over the years for a similar situation.

Dreier3 · 07-25-2021, 07:53 PM

Quote:

Originally Posted by Orion4

Turn car on or acc and depress the volume button for about 30 secs or a little more, display should go black and then start to reboot. That has worked for me several times over the years for a similar situation.

Tried that but it didn't work.

BimR · 07-25-2021, 08:26 PM

If it's the headunit, the swap is "easy" if you are good with electronics. I'm not so I paid someone but I was upgrading to Bimmertech. Some people here have had decent luck with Android tablets from China that are touchscreen and have BMW software.

Dreier3 · 07-26-2021, 08:10 AM

Quote:

Originally Posted by BimR

If it's the headunit, the swap is "easy" if you are good with electronics. I'm not so I paid someone but I was upgrading to Bimmertech. Some people here have had decent luck with Android tablets from China that are touchscreen and have BMW software.

I would probably just want to keep the same basic headunit but still not clear how I would program or if I need to take ir to BMW or if there are DIY ways.

erickonphoenix · 07-26-2021, 08:48 AM

I had the same issue with mine. Head unit kept rebooting to the logo.

Since I self warranty my car I bought one of a new head unit off ebay and replaced it. I'd call that job a one wrench on a four wrench difficulty scale.

Problem was not all these units are the same so it didn't work. I had to find another one that was specifically a L7 entry nav. (You can find that info printed on top of the unit when you remove it.) Installed that and it worked like a charm. Only problem was it's language was set to Italian. I tried to switch it to UK English but it doesn't work. However French does and I can read French enough so it's serviceable.

hope that helps

BimR · 07-26-2021, 11:24 AM

Quote:

Originally Posted by Dreier3

Quote:

Originally Posted by BimR

If it's the headunit, the swap is "easy" if you are good with electronics. I'm not so I paid someone but I was upgrading to Bimmertech. Some people here have had decent luck with Android tablets from China that are touchscreen and have BMW software.

I would probably just want to keep the same basic headunit but still not clear how I would program or if I need to take ir to BMW or if there are DIY ways.

There are lots of DIY on YouTube. If you can get a unit with the same exact specs, it's pretty much plug and play.

erickonphoenix · 07-27-2021, 02:26 PM

Quote:

Originally Posted by BimR

There are lots of DIY on YouTube. If you can get a unit with the same exact specs, it's pretty much plug and play.

Pro tip, pull the defective unit out and take a pic of the wiring on the back then cruise eBay for a replacement with the same wiring setup. You may have to be patient but if you can get the same one it should fire right up.

Dreier3 · 07-28-2021, 07:32 AM

Quote:

Originally Posted by erickonphoenix

Pro tip, pull the defective unit out and take a pic of the wiring on the back then cruise eBay for a replacement with the same wiring setup. You may have to be patient but if you can get the same one it should fire right up.

Good tip. My only question is how to I program it once the new hardware is installed or can I buy one that is already programmed?

erickonphoenix · 07-28-2021, 08:18 AM

Quote:

Originally Posted by Dreier3

Good tip. My only question is how to I program it once the new hardware is installed or can I buy one that is already programmed?

My US unit did not need reprogramming, I just plugged it in and it worked. The coding exercise appears to be specific to upgraded head units.

BimR · 07-28-2021, 10:53 AM

I think there are two different issues here. Swapping the screen for another same screen requires no coding. But IF the problem is the iDrive system, then you have bigger issues that will require coding.

All the tips here are based on swapping the screen for another same one and that is plug n play. You really want to hope that the screen is the culprit.

Hoody007 · 07-28-2021, 04:45 PM

Quote:

Originally Posted by Dreier3

Hi, I have a 2014 335i with the basic headunit (no nav) and recently it started to die on me. It is stuck on on BMW screen. It reboots every few minutes and loses Bluetooth phone in the process. Then it goes back to just the BMW screen.

I've been reading that this often means the head unit needs to be replaced. Is this certain? Anything else ir could be? I've seen that it is pretty easy to swap out the headunit but how would I get it programmed? Any help would be appreciated.

Do you have the CIC system? If so, your hard drive has probably gone bad.
I’m an E90 owner, not an F30 owner, but the CIC system in both cars is probably very similar.

Here’s a link (see the 6th post) to an image of the hard drive:
https://www.e90post.com/forums/showthread.php?t=1398361

Here’s a DIY for installing a new disk (I suggest going with an SSD):
https://www.e90post.com/forums/showthread.php?t=1426773

Nevo · 01-05-2023, 04:26 PM

Does anyone know if bmw part# 65129335352-01 is compatible with part# 65129357996 or Part#. 6512 9310466-01?

They all look exactly the same based on the pictures I find online, but I am being told that the part#'s must match.

07-25-2021, 12:07 PM	#1
Dreier3 New Member 1 Rep 15 Posts Drives: 2014 335i Join Date: Jul 2021 Location: Lancaster, PA iTrader: (0)	Headunit display stuck on BMW screen does not work Hi, I have a 2014 335i with the basic headunit (no nav) and recently it started to die on me. It is stuck on on BMW screen. It reboots every few minutes and loses Bluetooth phone in the process. Then it goes back to just the BMW screen. I've been reading that this often means the head unit needs to be replaced. Is this certain? Anything else ir could be? I've seen that it is pretty easy to swap out the headunit but how would I get it programmed? Any help would be appreciated.
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07-25-2021, 02:55 PM	#2
Orion4 Lieutenant Colonel 481 Rep 1,571 Posts Drives: 2013 335i Sport Line Sedan Join Date: Aug 2009 Location: Melbourne, FL iTrader: (0)	Turn car on or acc and depress the volume button for about 30 secs or a little more, display should go black and then start to reboot. That has worked for me several times over the years for a similar situation.
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07-25-2021, 08:26 PM	#4
BimR Lieutenant 245 Rep 500 Posts Drives: 2016 328 Join Date: Sep 2020 Location: New York iTrader: (0)	If it's the headunit, the swap is "easy" if you are good with electronics. I'm not so I paid someone but I was upgrading to Bimmertech. Some people here have had decent luck with Android tablets from China that are touchscreen and have BMW software.
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07-26-2021, 08:48 AM	#6
erickonphoenix Lieutenant 1722 Rep 535 Posts Drives: 2014 Gray 328xi Touring Join Date: Jun 2015 Location: Houston TX iTrader: (0)	I had the same issue with mine. Head unit kept rebooting to the logo. Since I self warranty my car I bought one of a new head unit off ebay and replaced it. I'd call that job a one wrench on a four wrench difficulty scale. Problem was not all these units are the same so it didn't work. I had to find another one that was specifically a L7 entry nav. (You can find that info printed on top of the unit when you remove it.) Installed that and it worked like a charm. Only problem was it's language was set to Italian. I tried to switch it to UK English but it doesn't work. However French does and I can read French enough so it's serviceable. hope that helps __________________
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07-28-2021, 10:53 AM	#11
BimR Lieutenant 245 Rep 500 Posts Drives: 2016 328 Join Date: Sep 2020 Location: New York iTrader: (0)	I think there are two different issues here. Swapping the screen for another same screen requires no coding. But IF the problem is the iDrive system, then you have bigger issues that will require coding. All the tips here are based on swapping the screen for another same one and that is plug n play. You really want to hope that the screen is the culprit.
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01-05-2023, 04:26 PM	#13
Nevo Registered 0 Rep 1 Posts Drives: BMW 320i Join Date: Jan 2023 Location: Virginia iTrader: (0)	Compatible head units Does anyone know if bmw part# 65129335352-01 is compatible with part# 65129357996 or Part#. 6512 9310466-01? They all look exactly the same based on the pictures I find online, but I am being told that the part#'s must match.
	Appreciate 0 Quote