airman2482
Posts: 29
Joined: Sun Feb 21, 2021 1:47 pm

Re: I had a 3G to 4G TCU upgrade to prove a point.

airman2482 wrote: Wed Apr 06, 2022 11:10 am
EvanstonI3 wrote: Wed Apr 06, 2022 10:00 am
airman2482 wrote: Wed Apr 06, 2022 9:25 am And FYI, I have 2 other friends who have 2017 model year cars I helped put RoadTop units in and they did NOT have the new 4G LTE telematics unit installed in mine in their i3 either. Both of them no longer have connected drive.
well, also FYI- on every other forum where someone with a 2017 stated they only had 3G and lost Connected Drive it turned out their subscription had expired. That's been my experience so far. They were going off the icon on the screen. Your experience as a data point is an outlier and does not make sense when BMW was known to have been putting the 4G modules in since mid July 2016.

I am not saying you are wrong and I am not looking for an argument. It just does not make sense to me given everything I have encountered over the past year.

I would be interested in seeing what the label looks like on your new TCU. particularly where it says "MODEL:"
Yes, the screen still states “3G”.. I know what you mean.

FWIW: One of the two 2017 i3 owners I know tried to renew his connected drive and services and the person at BMW exclaimed he was “out of luck”…

It’s kind of crappy outside today, and I have a pile of stuff in the back seat, I’ll post a pic this weekend, I have to clean the car out after the winter, now that it’s highway construction season in Minnesota. (It seems there are only two seasons here in MN, winter and highway construction seasons, with a brief pause for the changeover)

And yes, this is a good idea to start a new thread!

Let me dig up the invoice, I’ll begin by giving the old and new part numbers from it.
Here’s a transcription of the invoice:

(Sorry, I’ve never uploaded an image)

CUSTOMER IS EXPERIENCING ISSUES WITH CONNECTED DRIVE AND SOS. SEE SFTS.

FAULTY TCB
6121528(1) 0000006(4) 6100006(1) tp 18m/485
8410811(6) 6100730(4) 8411021200 ps

1. HOOKED UP CHARGER/PULLED FAULTS,
2. RUN TEST PLAN AND PERFORM A
FUNCTIONAL TEST OF THE TCB. RECEIVED DIAG TO REPLACE THE TCB.
3. REMOVED AND REPLACED THE TCB, PROGRAMED THE VEHICLE, UPDATE ONLINE SERVICES AND CHECK THE ICC-ID NUMBER AND PART NUMBER INSTALLED AND IT IS THE UPDATED 6 836 777 PART NUMBER

QTY - - - FP-NUMBER——--DESCRIPTION-
1. 84-10-6-836-777 TCB
3. 07-14-7-335-808. NEOPRENE NUT

- - - - UNIT PRICE- TOTAL - PARTS
1 TOTALS- WARRANTY
1 TOTAL CHARGES: 0.00

WARRANTY
0.00
——
I hope this helps!
jaaniwangu8
Posts: 1
Joined: Tue Apr 12, 2022 4:02 am

Re: I had a 3G to 4G TCU upgrade to prove a point.

I wonder if the BMW Dealer has to do anything 'special' in registering the modem with BMW, other than programming it to the car with ISTA+?? Does ISTA programming pass on/register the new phone/ID number to the BMW Connected Drive server? Or is there some extra registration step that must be done by a BMW Dealer??

hellodear.in

teatv.ltd
tezarc
Posts: 21
Joined: Sat Nov 22, 2014 1:59 am

Re: I had a 3G to 4G TCU upgrade to prove a point.

jaaniwangu8 wrote: Tue Apr 12, 2022 4:56 am I wonder if the BMW Dealer has to do anything 'special' in registering the modem with BMW, other than programming it to the car with ISTA+?? Does ISTA programming pass on/register the new phone/ID number to the BMW Connected Drive server? Or is there some extra registration step that must be done by a BMW Dealer??

hellodear.in

teatv.ltd
You got it. Doing the ISTA+ programming puts the vehicle's VIN into the new TCU's ROM (which is why you cannot use a scrapped TCU from another vehicle for this) and registers the new TCU to the the VIN in Connected Drive servers. No special steps needed.
2014 BMW i3 BEV Giga world Laurel Grey

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