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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Bluetooth Retrofit: E90 335i with iDrive, Phone prep, Voice control, and USB



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      01-01-2016, 11:50 AM   #287
mstgeer
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Just replaced tcu in my car, sos error and non functioning bluetooth was the issue. Picked up used tcu off eBay, installed and all functions returned. Only issue is name of car bluetooth device on pairing screen is different than car device name on phone paring screen. I did not feel the need to breakout the coding setup to make them match. Glad to answer any questions or assistance anyone if I am able.
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      01-29-2016, 11:48 AM   #288
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Been wanting to do this for some time.. my e82 does not have VC or Idrive, but it is prewired for the MIC and Bluetooth already and has the USB/Aux. I already swapped the wires in the trunk per this instruction. Will this work the same with with mine even though it isn't Idrive/VC? I haven't gotten to pulling the glove box out yet but just noticed the thread said it was for idrive/VC cars.
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      01-31-2016, 04:17 PM   #289
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Some questions:

1) I installed the stock antenna under the drivers side panel. Do I reconnect the most connector to the plug on the panel after I installed the purple/black plug?

2) in the trunk, after I've swapped the mic wiring, what should be left plugged into the MULF? Just the rewired blue connector and the bare metal round plug? Nothing else?

I had the coding done month ago, and I could connect my phone if I were in the trunk with it. But now after I installed the antenna and rewired the MULF, bluetooth is disconnected, and I can't recheck the box. I've also lost aux in, USB functionality and radio sound. BT is grayed out.

What did I do wrong? I thought at this stage I should be able to connect from the drivers seat and all that should be left is repinning the mic behind the glovebox

Last edited by AWD Addict; 02-01-2016 at 10:39 AM.
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      01-31-2016, 05:09 PM   #290
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Is this my issue?

http://www.e90post.com/forums/showthread.php?t=765036

It paired before I installed the antenna and rewired the mic in the trunk. Now no phone shows up. Do I need to go back to the coder and do the SG reset for phone to come back up (un-gray)?
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      Today, 01:41 PM   #291
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Turns out my issue was simply that I didn't plug all the items back into the MULF after rewiring the microphone wires into the blue plug. The instructions from the OP here said to unplug everything, but then only said to plug 2 of the items back in.

After I plugged the MOST and other black connector back in, bluetooth was live with great connectivity.

Just need to finish wiring the mic behind the glovebox (which looks like a job for someone with much smaller hands than mine!) and I'll be all set.
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      Today, 06:42 PM   #292
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Got the mic rewired behind the glove box. This was easily the worst part of the retrofit, only because at least on my car, the braid for the plug was so short, I couldn't even spin it to see the wire pinouts behind it. Cutting back the sheathing helped a little, but not a lot.

There simply wasn't enough space to get two hands in there to pop loose the wires, pull them out, and hold the plug in place. Never mind how hard it was to get light in there, given my fat ass needed the entire footwell to position myself well enough to work on the plug.

I actually has to tape the male plug to the metal rail behind the glovebox, so I could use one hand to pop the wires loose, and the other to tug them free. Total pain in the ass.

All buttoned up now though. works flawlessly. Great BT signal from the stock location and antenna, and the mic works great. In fact, test call said I sounded loud. Speaking normal/soft still comes through really clear on the other end.

Controls are okay on the nav. Modern phones and their voice control is way slicker. Things have come a long way in 9 years!

Big ups to lazd for the tutorial. Only complaint is that after you unplug everything on the MULF for the rewiring, the tutorial should say to plug in more than just the blue plug and the antenna. The MOST plug and the other black wire also need to be replugged in.
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