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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Bluetooth problem ??



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      10-31-2014, 08:30 AM   #45
Latebmw
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Yes it's straight forward. After removing screws with with a t15 torx screwdriver, the board pops out. I ran a heat gun over the board for a few minutes, constantly keeping the gun in motion set on low setting, 750 F.
Then let cool for 20 minutes before re assembling.
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      10-31-2014, 09:07 AM   #46
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Quote:
Originally Posted by Latebmw
Yes it's straight forward. After removing screws with with a t15 torx screwdriver, the board pops out. I ran a heat gun over the board for a few minutes, constantly keeping the gun in motion set on low setting, 750 F.
Then let cool for 20 minutes before re assembling.
Cheers
Did you remove the box from the boot ?
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      10-31-2014, 12:40 PM   #47
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Yes indeed.
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      11-08-2014, 07:09 PM   #48
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Update.....Bluetooth failed today.....I performed another re-flow with the heat gun and it is working again.....but for how long ?
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      11-09-2014, 05:46 AM   #49
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Going to try it today
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      11-09-2014, 12:54 PM   #50
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Bluetooth failed again...... I'll give it another shot today......
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      11-14-2014, 06:57 PM   #51
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I tried the oven method this time......put the circuit board in the oven for 8 minutes @ 385 F. It's working so far.....will update in a week.
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      12-01-2014, 08:00 AM   #52
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Quote:
Originally Posted by Latebmw
I tried the oven method this time......put the circuit board in the oven for 8 minutes @ 385 F. It's working so far.....will update in a week.
How has this held up ?
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      12-04-2014, 03:37 PM   #53
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Hi.

First post on here with the same Bluetooth module failure on a 2007 E91 320D MSport.

Tried a used unit from eBay but either it's faulty or it needs coding as the inde garage I use can't get it going even though they have diagnostic gear. Looks like a trip to BMW to see if it can be repaired as it came on for a few seconds at the inde garage when they re-hooked it back up. Frustrating stuff.


Had a quote to replace by BMW and it was over £700! Don't fancy that at all.
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      12-04-2014, 06:37 PM   #54
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Quote:
Originally Posted by O.C.D.
Hi.

First post on here with the same Bluetooth module failure on a 2007 E91 320D MSport.

Tried a used unit from eBay but either it's faulty or it needs coding as the inde garage I use can't get it going even though they have diagnostic gear. Looks like a trip to BMW to see if it can be repaired as it came on for a few seconds at the inde garage when they re-hooked it back up. Frustrating stuff.


Had a quote to replace by BMW and it was over 700! Don't fancy that at all.
£700 ....... They piss me right off
The wife has to give her company Mini Cooper s back next week so I'm looking to swap mine with that. ......... MULF unit not the car that is
Anyone one know if they are compatible?
Radio is just the same.
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      12-06-2014, 11:04 AM   #55
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Quote:
Originally Posted by myboris View Post
How has this held up ?
Oven method failed after about a week......I performed the oven method again and it worked for another week or so. Does not seem like a permanent fix.....
It's in the oven again as I type......Anyone have a good cookie recipe ? I'm beginning to feel like a pastry chef..........
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      12-08-2014, 02:44 AM   #56
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if the oven method is effctively melting the solder and reflowing it, then you've maybe got a dry joint. give it to someone with a decent soldering iron and a magnifying glass and see if they can find the joint thats missing solder.
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      01-22-2015, 11:56 PM   #57
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I overcooked the cookies, module failed.....bought a used one on ebay and installed it. All is well ! Hands free law goes into effect this month so good timing. Late
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      01-23-2015, 02:57 AM   #58
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Quote:
Originally Posted by bytejunkie View Post
if the oven method is effctively melting the solder and reflowing it, then you've maybe got a dry joint. give it to someone with a decent soldering iron and a magnifying glass and see if they can find the joint thats missing solder.
This.

A decent electrician will get his multimeter out and be able to spot the dry joints in seconds. A few seconds with a soldering gun and you'll be fine

A side note: I had exactly the same thing with my CH boiler, Company wanted £200 for a new board. A friend noticed the dry solder joint, ten seconds with a soldering gun, and all was well with the world

Paul
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      07-24-2015, 01:10 PM   #59
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Hi guys

Ive got a 2007 coupe with idrive , the bluetooth turns on but non of my phones can find it , its un discoverable for some reason


Thinking of doing this heat therapy, just want to confirm is this the silver box under the boot carpet that needs to be heated ?

Thanks
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      07-24-2015, 06:49 PM   #60
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I've also got the - - on mine, intermittent at first but looks like it's permanent now.

Annoying as I actually use it now and then!
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      07-25-2015, 02:26 AM   #61
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the -- basically indicates that the MULF module isnt responding.

The older MULF1's seem to have a tendancy to die, so i swapped mine out for a MULF2 instead. Was quite easy to do, i did a write up if you have a search.
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      07-25-2015, 05:48 AM   #62
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I'm on the edge of fitting CarPlay so might just do that.
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      07-25-2015, 07:14 AM   #63
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I found your thread - http://www.e90post.com/forums/showthread.php?t=1126467

Could you not also just swap the HU to the LCI one with Bluetooth/USB built in to it? Or have I misunderstood something?
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      07-26-2015, 03:26 PM   #64
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my ones started working , i deleted all the phones that were paired earlier , and it finally became discoverable , but its a bit temperamental as sometimes have to re start the car


QUOTE=blood_Game18;18311345]Hi guys

Ive got a 2007 coupe with idrive , the bluetooth turns on but non of my phones can find it , its un discoverable for some reason


Thinking of doing this heat therapy, just want to confirm is this the silver box under the boot carpet that needs to be heated ?

Thanks[/QUOTE]
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      07-26-2015, 04:46 PM   #65
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Quote:
Originally Posted by Digitalize View Post
I found your thread - http://www.e90post.com/forums/showthread.php?t=1126467

Could you not also just swap the HU to the LCI one with Bluetooth/USB built in to it? Or have I misunderstood something?
You could, sure, but:

A Late model bluetooth headunit is £300ish.

The MULF2 was £125.

Car was already wired for the MULF and thus was effectively a plug and play swap, whereas the later headunit would have required rewiring the mic and bluetooth antenna to the headunit instead.

So to me it seemed the replacement MULF was the best option.
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      07-26-2015, 05:33 PM   #66
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Quote:
Originally Posted by Aragorn30d View Post
You could, sure, but:

A Late model bluetooth headunit is £300ish.

The MULF2 was £125.

Car was already wired for the MULF and thus was effectively a plug and play swap, whereas the later headunit would have required rewiring the mic and bluetooth antenna to the headunit instead.

So to me it seemed the replacement MULF was the best option.
If you wanted to add USB at the same time it would make more sense though?

Thinking it might be my excuse to go to CarPlay though.
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