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Old 12-27-2016, 06:41 PM   #1
Registered User
Join Date: Oct 2008
Location: Huntington Beach, CA
Posts: 379
My Ride: 2003 330Ci
ULF & Iphone 7Plus Not Working

I installed a ULF module and all the associated parts in my 2003 330ci about 6 years ago and it has worked flawlessly until I purchased an Iphone 7plus in October. For the first month it worked OK, then in November it started to disconnect from the car after a call was ended (the red light on the nav screen was lit up) and my phone would freeze. In December it stopped working all together. I read online a few placed and they said to unpair the phone and re-pair it to the car. I did and a strange thing happened, the car used to be identified in my Iphone as "BMW 28800" and now it is called "BMW ULF". Somehow the ULF module was also reprogrammed. The PIN on the module sticker is "1400" and has always worked. The PIN has changed somehow changed to "1234" now. I verified this by connecting to the module using INPA and reading the module PIN. It now states that it is 1234. My phone is paired to the car but wont connect, wont do anything. I pulled out my old Iphone 5 to see if the older IOS version worked with the car and it did not. It also reads the car as "BMW ULF" and only pairs with PIN "1234"

It appears that my Iphone somehow reprogrammed the ULF module in my car?? Is that even possible?

MysterT Huntington Beach, CA
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Old 12-28-2016, 10:01 AM   #2
Registered User
Join Date: Jul 2008
Location: USA
Posts: 5,342
My Ride: 2001 330Ci
Are you noticing any other electronic/electrical issues with the car? Google "BMW E46 hidden OBC functions." Test #9 shows the system voltage. Check and report back the voltage reading when the:
- ignition is in the run position with the engine off
- engine is idling
- engine is revving at 2000rpm.

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Old 12-29-2016, 06:36 PM   #3
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Join Date: May 2015
Location: El Paso, TX
Posts: 703
My Ride: `04 M56 Touring
It's a ulf problem, not an iPhone problem.
Recode your ulf with a blank man file to reset it to stock and see if that clears it up.
If I were to give my Touring Build a first name, I'd probably name it "Alan".
Mostly because I like puns.

E46 Touring TV Tuner Install/Mounting DIY

Last edited by Onizukachan; 12-29-2016 at 06:37 PM.
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