Cruise Control Retrofit Euro6
- Thread starter Allan Smith
- Start date
Yes, disable the MFSW in byte 29. And then enable the cruise control.
That would be great - also for future reference please. Preferably full VCDS Auto-Scan but as minimum engine (01), BCM (09), Instruments (17) sections.
Here you go. There are a few tweaks from standard plus a tow bar module added but nothing drastic altered.
@mmi am I correct in thinking that the persistent Battery Regulator fault is most likely caused by the B2B unit that I have installed? That is a RING RSCDC30 with two leisure batteries and 100W Solar on the roof. I have always ignored the fault report as there has never been any obvious problem resulting from it. The B2B has been there for well over 50,000 miles.
If I can help with anything else please feel free to call.
Rod
Thank you very much for the scan!
Based on my experiments I believe the trigger level is at about 40 mA extra. E.g. leaving Carista dongle (draws 40 mA) plugged in OBD-socket triggers the fault eventually (in 1-7 days, pretty random). However, leaving VCDS connected (120 mA current draw) definitely triggers the fault in less than 8 hours.
Most likely yes. It's indeed just an indication of some extra (over factory configuration) quiescent current. Unfortunately the freeze frame data doesn't show the trigger level ("leak" current).
Based on my experiments I believe the trigger level is at about 40 mA extra. E.g. leaving Carista dongle (draws 40 mA) plugged in OBD-socket triggers the fault eventually (in 1-7 days, pretty random). However, leaving VCDS connected (120 mA current draw) definitely triggers the fault in less than 8 hours.
Well, based on @rod_vw 's scan and confirmed MFSW and CC on stalk configuration
Noted on another scan that without MFSW but Cruise on stalk the byte 29 is plain hex "00".
EDIT (9 hours later) - Just had realized @rod_vw has LED-headlights and actually I had verified the (byte 29) bit 5 to be part of LED power setup here --> [Guide] How To Retrofit MFSW And Cruise Control To T6 Eu6 2019 Startline - Also Hacking DSG Paddles For CCS
Another thing to note is that MFSW connection to BCM is different between EU5 (T73b/17) and EU6 (T73b/36) engines (wiring diagram No 65/2)
Last edited:
The byte 29 bit 6,
EDIT: I think we can ignore the bit 5 - see post #164 (edited)
Just to double check the codings please
In OBDeleven > Control Units > Central Elecrics > Info > Tap and hold on "Long coding" (copies the code into clipboard)
Post the coding.
The same for engine.
Last edited:
Central electrics
So the above produce faults P0568 in engine and 01044 (control module not coded) in central electrics??
Pin 44 on the BCM connector T73a (BCM black connector) is correct +12V (IGNition on) for you. It's fused by SC32. I'm assuming the "A" is the T73a, and "B" is respectively T73b (BCM white connector)
However, I'm a bit curious about wiring. See on connector T41 pins 26 and 29 in the snippet below. Are they connected together in your wiring?
Full OEM wiring diagram in the link - see page 102/2 for the above
T6 - CCS Cruise Control (EU6) Wiring Diagram
Cruise Control System Circuit Diagram Covers Euro 6 style cruise control operated from steering wheel buttons VIP Membership is required to download this document
Similar threads
