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You can ask the bcm why it's unhappy about the lights. Or isn't there any error code?


Yes that is correct, there are no errors in the BCM at all (am jumping for joy just saying that) unfortunately it does not help us in this instance.

Are you saying there is a way for the BCM to force a ...

Box ticked means the diagnostics are active.

What error is vcds showing?


Apologies for the very late reply iichel! Have been busy retrofitting power fold mirrors 😁

I have cleared codes on the BCM and this has remained clear from codes for 2 days now, but still shows a bulb warning on the ...

try this please:

A0A0303A0E61242392284F702F6B8C55D680660F6087 11 40300000000000


iichel, sorry for the late reply! That worked like a charm!
Thank you ever so much! They dim correctly, and all function well.

I’ve noticed that now the xenon lights are fitted, the bulb check warning is up for ...

I have changed the coding over byte 23 bit 5 and this has no effect on the function of the DRL’s.

Is there a way to adjust the PWM voltage whilst the sidelights / headlights are on as per OEM?

Of course, it looks a bit of a mess :(


01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
10-Park/Steer Assist -- Status: OK 0000
15-Airbags -- Status: OK 0000
17 ...

—————

If there is still anybody monitoring this thread, I need to find a way to code the DRL’s to dim whilst the sidelights and headlights are on. I have wired them up to the specified schematics on this thread, and work correctly apart from dim.

Any help will be appreciated!

Hi Adam, are you still monitoring this thread? I was wondering if we could discuss some of the particulars for the Climatronic retrofit you completed?

Many thanks!

Could I just ask a quick question?

I have installed factory xenon headlights to my T5, and coded the van to allow them to “work” for the moment. I have replaced the original headlight T10 connectors with T14 and transferred the pins for a seamless install (I didn’t want to use a harness)

Now, the ...

Thanks again for your help. Everything is back up and running. Have been for a short drive this evening, and all functions seem to be good

Thanks for the info, I have linked up the stereo canbus wires with the convenience canbus in the BCM, and voila, the stereo is now recognised and works, so those wires were required it turns out. With the canbus disconnected, the stereo does not switch on with the ignition and asks for the radio ...

Ok steady progress at last........! Thanks again for your pin outs.

With the CAN gateway disconnected and wires run direct to the BCM, the CANBUS is back up and able to view each module, apart from the stereo, which I believe occupies

J553
T20B/10 - Can Low
T20B/20 - Can High

Do you know where ...

Ok, an update to BCM Max install.......

I can communicate directly to the BCM via VCDS, but no other module in the van. Would I be correct in saying the diagnostic can wires are already in place for the BCM > OBD?

The new CAN gateway is located inside the BCM.
You need to route the following wires to the BCM (I don't have a schedule here for exact pin numbers)
2 wires (high and low) for CAN diagnostics to the OBD2 connector
2 wires (high and low) for CAN instruments to the instrument cluster
2 wires (high ...

I’ve since tried to do a full auto scan and this fails from the start. I have however isolated old can wires, and connected the can + and - lines from the cluster to the bcm directly, which has got rid of a multitude of sins.