T6 OEM LED-headlight retrofit

[Pauly]

Not sure exactly how it works on a left hooker but the PDC module sits vertically on the edge of the BCM bracket so i would expect to see it behind the area of one of the red lines, in fact the cream/biege plug in view may even be connected to it ?

 

[Pauly]

Canbus pairs are all over the place, i can see a couple in the pic below but you need to make sure they are the right colour wires as theres a drivetrain canbus and a convenience canbus and connecting to the wrong one will corrupt the circuit and stop things from working

 

[Robert]

Orange/brown & orange/black are the wires you need to connect to.

 

[scotia]

Ok @Pauly you seemed to be right for a LHD I can see the module and it's marked parkenhilfe... My little German makes that parking assistance .. and there are 2 orange wires 0.5mm one with black stripe one with brown stripe. Their not twisted like the others but I'm guessing this is right?!
If I can get the module out I can take a pic..

 

[Pauly]

Yes thats the one, they will be twisted in the loom but probably just stop twisting where they exit the taped loom and become more visible

 

[scotia]

Ok cool thats great. Last question before I cut - it doesn't matter which I plug into pin 2 or 3 then if I have a pair it's ok?

 

[Robert]

Orange/black is CAN High ---> T26c/2
Orange/brown is CAN Low ---> T26c/3

 

[Pauly]

If you connect them backwards everything connected to the canbus circuit will stop working (yes i speak from experience)

 

[scotia]

Hahaha ok thanks! I've just got to find a crimp connecter that's small enough for the 0.5mm! Cheers guys

 

[Montecha]

@Pauly made up this connector for me so that I didn’t need to splice. If you have crimps and connectors it’s quite a neat solution.

You remove the respective wires from the PDC plug and replace them with orange and black, then put the canbus crimps into the plug with the single wire and hey presto you’ve T’d into the canbus (without the splicing that made me nervous).

 

[scotia]

ah i would have done that if i'd known! but the splice seemed to go ok.

i havent done the coding - will do that when i get time... but with the key in on the first turn there was no lights atall - normal? @Robert @Pauly I had expected them to light up but not work properly as per other posts..

 

[Pauly]

DRLs wont work until coded
Dip headlights may work without the engine running but will cutout if you start the engine

 

[scotia]

Ok I'll code asap . Thanks again @Pauly

 

[scotia]

@mmi or anyone else who knows obd11 (@Robert @Pauly ) - i need some help here sorry... when i connect and go into central electrics i go to Byte 18 and i get this:

so i can see Byte 18, but not the bits?!

If i click on the text "light setup" i get this:
but i have no idea what these do - are these presets? The one with led headlights and non-led rears (my setup now) is noted as barn door (i have tailgate).

Do i need to uncheck the 1st one then count from the top being bit zero?

For Byte 21 bit 0 - on my list i have to put it to 1 so on, but i have this as a description.. seems odd?

Byte 22 bits 2 and 4 seem to be there at least so should be ok:


and Byte 23 at least there is text there so i should be able to get it..

 

[scotia]

my full long coding is this:

62A0393A0A21209201284F742CEB8ED48FA0710F60C66D60320400230800

 

[mmi]

but i have no idea what these do - are these presets? The one with led headlights and non-led rears (my setup now) is noted as barn door (i have tailgate).

Yes, they are presets - unfortunately every user can feed those in so can't always trust them. The ones marked "T6:..." seem to be my contribution
Of course you can just tick the boxes to create your own coding.
The one with LED headlights + non-LED rears should work for you, too (regardless of tailgate or barn doors).

 

[scotia]

Yes, they are presets - unfortunately every user can feed those in so can't always trust them. The ones marked "T6:..." seem to be my contribution
Of course you can just tick the boxes to create your own coding.
The one with LED headlights + non-LED rears should work for you, too (regardless of tailgate or barn doors).

So if I click on this one it does all the byte 18 mods then? And then for the other ones I can just go through them as noted on the list..

Is there anyway to develop what these presets are? I just want to check through it for my understanding..!

If I accept the change can I revert back to my backup by typing it in to the long code?

Thanks for your help

 

[mmi]

count from the top being bit zero?

For Byte 21 bit 0 - on my list i have to put it to 1 so on, but i have this as a description.. seems odd?

Yes, byte 21 bit 0 = "1" - the text should show then "Led"

So if I click on this one it does all the byte 18 mods then? And then for the other ones I can just go through them as noted on the list..

Correct.

Is there anyway to develop what these presets are? I just want to check through it for my understanding..!

Well, a kind of tool for that is here "T6_09_BCM_Coding_Decoder" as an attachment.

VCDS codes list

Posting this here as I believe it contains codes previously undocumented on the forum. It comes from the the OBDeleven forum, with extra functions added to the list by the poster Oberon. I'm posting as is and take no responsibility for the accuracy of the data. Central electrics control unit...

www.t6forum.com

my full long coding is this:
62A0393A0A21209201284F742CEB8ED48FA0710F60C66D60320400230800

I'll check this later... When done please post again your "final" coding.

If I accept the change can I revert back to my backup by typing it in to the long code?

Yes - it's a bit clumsy in OBDeleven, but doable yes.

 

[scotia]

Yes, byte 21 bit 0 = "1" - the text should show then "Led"


Correct.


Well, a kind of tool for that is here "T6_09_BCM_Coding_Decoder" as an attachment.

VCDS codes list

Posting this here as I believe it contains codes previously undocumented on the forum. It comes from the the OBDeleven forum, with extra functions added to the list by the poster Oberon. I'm posting as is and take no responsibility for the accuracy of the data. Central electrics control unit...

www.t6forum.com

I'll check this later... When done please post again your "final" coding.


Yes - it's a bit clumsy in OBDeleven, but doable yes.

ok i'll try this when i can..

so my full long coding above is before any changes.. my safety net i guess

Of course you can just tick the boxes to create your own coding.

so if i did it this way, i'd untick the one i currently have (H4 and non led rears etc) and then how do i see where the bit 0 and bit 1 are etc? do i just assume that it starts at 0 and works up?

sorry for my numpty questions..

 

[scotia]

Ok I have lights...! sort of..Just an issue I think - no DRLs and a bulb light on dash..
This is my new code - I may have messed up on the bit with DRLs..

62A0393A0A21209201284F742CEB8ED48FA0720F60C77920320400230800

@mmi @Robert any ideas? Thanks in advance
So just to recap normal lights work, full beam works just seems to be the DRLs.

i got a bit confused with it, as on my obd11 it showed for Byte 23 bit 5 Daytime running light Active, and it was ticked - as the list says Byte 23 bit 5 0 i took this as it had to be unticked... was i wrong?

I was also going to do Byte 23 bit 7...but i dont have that?! only Byte 23 bit 6 which is marked as below:


this is all with the engine off - i'll try the engine on in the morning.. the bulb warning is weird though no?