Bluetooth Module problem (MULF) problem

[robbieredknapped]

Sypmtons:

Cannot connect to Bluetooth,

"- -" on display

Stereo skips and Mutes randomly

volume controls have a delayed reaction


They are two control module boxes in the E87, one under the boot behind the rear seats, it the Module ULF (MULF) the other one is the near the left side tail light.
BMW said i need to take it in for a check to see which one is faulty.


Anyone knows how i can by pass the MULF for now to fix the stereo problem till i get the module changed or repaired.

[GJA003]

Do you have idrive ?

I have had the Mulf issue since i bought my car. Been talking with a guy that repairs them the module is in the rear under the boot mat to the far right in the e87. This is the mulf unit it's only for the bluetooth apparently. I confirmed this yesterday by pulling it out and testing everything else functioned. As far as the other issues i probably have them too but never have been able to tell a difference so can't help you there.

... http://cgi.ebay.com.au/ws/eBayISAPI....ht_1046wt_1271

[sbce90]

Have you tried hitting it?

[ReyT]

Originally Posted by sbce90

Have you tried hitting it?

ALA nintendo style? lol.

[100thirtyfiveinjection]

Originally Posted by ReyT

ALA nintendo style? lol.

ReyT it is actually called percussive maintenance. Often also known as technical tap.

[robbieredknapped]

Originally Posted by sbce90

Have you tried hitting it?

Hitting will not help ...

[Knightelf]

Oh ... It says mulf, thought it was something else

[robbieredknapped]

Originally Posted by GJA003

Do you have idrive ?

I have had the Mulf issue since i bought my car. Been talking with a guy that repairs them the module is in the rear under the boot mat to the far right in the e87. This is the mulf unit it's only for the bluetooth apparently. I confirmed this yesterday by pulling it out and testing everything else functioned. As far as the other issues i probably have them too but never have been able to tell a difference so can't help you there.

... http://cgi.ebay.com.au/ws/eBayISAPI....ht_1046wt_1271

No idrive . If I unplug the 2 connectors to the MULF. Stereo can turn on but no sound at all. So how can u bypass that but make the stereo work?

[Mechz]

I have the same problem, $1400 is the BMW price for a new unit. Not sure if you can get these aftermarket.

[GJA003]

Been trying to fix mine got a second hand Mulf unit hopping that would solve my issues, still zero results. Spent a fair bit of time changing fuses still not luck. Trying to get in contact with www.bmwbluetooth.com.au see what options are left. Anyone had any luck ?

[GJA003]

So got in contact with the Melbourne based repair guy www.bmwbluetooth.com.au and got to try his module and sure enough his test one worked. So least now i know its the module. Cost is $400 he doesn't buy modules apparently gets them for free. In my experience unless you can test a second hand module don't even bother with it.

[_Ryan_]

Originally Posted by GJA003

So got in contact with the Melbourne based repair guy www.bmwbluetooth.com.au and got to try his module and sure enough his test one worked. So least now i know its the module. Cost is $400 he doesn't buy modules apparently gets them for free. In my experience unless you can test a second hand module don't even bother with it.

$400 isn't bad if the unit works for longer than a year in my opinion, better value than a fine for talking on a handset and more convenient than a headset.

Has anyone used the repair services at the above link?

They also do LCD repairs.

[BigBoss168]

Apologies for the bump - I just received my repaired MULF2 unit for my E82 135i coupe back from Autotronic (www.bmwbluetooth.com.au) and it works perfectly. Ayhan was very helpful on the phone and even offered me some free advice to try to reboot the unit before sending it in.

I also had the dreaded "- -" in place of the phone icon on my BMW Professional (non-iDrive) head unit and my new phone would not pair. Took it to the dealer who charged me $242 to inspect the unit (and gave my car a very nice wash) but when they were unable to fix it, quoted $1,600 for a replacement MULF2 unit. I was annoyed that the dealer told me that the MULF2 unit would gradually start affecting the radio, trip computer to try to get me to replace the whole thing, which just isn't true.

Autotronic also advertises the repair services on eBay and has a "best offer" service so you can actually get the repair for a bit less than $400.

PS. Apparently the problem with the MULF2 units arises when you try to pair a phone with more than 1,000 contacts. The solution is to either reduce the number of contacts on your phone or don't allow the phone to share contacts with the car.

[_Ryan_]

Originally Posted by _Ryan_

$400 isn't bad if the unit works for longer than a year in my opinion, better value than a fine for talking on a handset and more convenient than a headset.

Has anyone used the repair services at the above link?

They also do LCD repairs.

Had mine done, waste of money for me. I have connection stability issues.