Transporter T5 GP retrofit BCM from T6 ==> instrument lighting is fading in and out

   #21  

Limalex

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I am using VCP with EDC17 Boot Plugin, but this needs opening the ECU.
I know that "PCM Flash" can read/write via OBD, did not try it ....
Galetto 4 works, too.
Kess did not work in my test, but probably my bad ...
Thank you I will check those.
And see what investment i would needed.

But need to do the BCM upgrade first
 
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Limalex

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Electric Tailgate was introduced in 2016 or 2017 as an 600 Euro Option in the T6.

The Button on the Inside in the T5 GP does only the Unlock.
The Button in the remote is useless i think.
Ha ha at least i know that i need to look at that button, because it never released the central lock
 
   #23  

Limalex

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Hi Dennis,

Yes a quick question regarding BCD. I currently on a hunt for a suitable one.

I see you changed a suffix B to a C

According Gannu_1's post on team bhp forum The letters the end of the part number refers to a remote MHz frequency.

"BCMs with 434 MHz radio carrier frequency ends with the letters B, D, F, H, K, M, P, R, T. Pick up one of these if you are looking to upgrade. These BCMs are used in India, EU, South Africa and Russia."

"BCMs with 315 MHz radio carrier frequency ends with the letters A, C, E, G, J, L, N. These are used in Mexico. Avoid these units!"

So you changed a higher frequency supported BCM to a lover frequency one. Have you had issues to pair and use your original remotes?

Also 090 BCM's witch has a possibility to support all factory functions has different software numbers like Z736H80, 0744H81. So we can assume the highest ones are the newest ones with more upgrade options?

Alex
 
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   #24  

dnoermann

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It look like the BHP forum is wrong, here, in T5 GP and T6 it look like the 315MHz Versions do have other Order numbers: 190 vs 090

I changed
- 7H0 937 090 B BCM PQ25 Max4 H74 0712
to
- 7E0 937 090 C BCM PQ25 Max4 H82 0752

Theese are both 434 MHz according to ETKA

Higher Software Version is always better :)
 
   #25  

Limalex

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It look like the BHP forum is wrong, here, in T5 GP and T6 it look like the 315MHz Versions do have other Order numbers: 190 vs 090

I changed
- 7H0 937 090 B BCM PQ25 Max4 H74 0712
to
- 7E0 937 090 C BCM PQ25 Max4 H82 0752

Theese are both 434 MHz according to ETKA

Higher Software Version is always better :)
Great thank you. It made my decision easier.
So I found exactly same one as yours. That was the latest available online.

Could you tell me about that relay mod you done?

Do I need any more mods on wiring ?

I Hope BCM arrives by the end of next week and I would like to be well prepared for fitting.
 
   #26  

Limalex

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One more thing. Should i replace my stalk for a simplified version without trip and CC?
If so any Vw would fit? Or should i match it to a steering wheel? Or I just over complicate it 😁
 
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vastechnics

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Did you solve this problem with interior light? I have exactly same problem!
 
   #28  

dnoermann

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Short time solution was to connect the Instrument lightning to Klemme-15.
Long time, still not installed, is to use a relay which is controlled by BCM T73 pin 7 and which switches Klemme-30 to the Instrument lightning.
 
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