L322 (2003) No Start - CAN Bus/Engine ECU Communication Issue

uk_diag said:

So bit of an update... finally got bottom of what I believe the issue was but still a long way from solution...

The whole issue seems to be steering lock related, made worse by the first garage damaged the key and replaced the casing without informing any one and some how they forgot to move over the immobiliser transponder, to compensate they have done immo off on the ecu to try and bypass this issue again without informing any one - but clearly this did not work, as the key would not turn without transponder unlocking ignition barrel.


So I bought some spare transponders from aliexpress and an ak90 programmer created a new transponder and now if I have the original steering lock installed then nothing happens (even with removing fuse 18) but with a emulator installed I can get to ignition finally...

The key now turns to ignition but won't start the car - multiple errors on display HDC inactive - fuel injection error - and sadly now my key is stuck in the ignition barrel. I think this may have something to do with all the plastic trims being disconnected around auto gear shifter maybe its not getting signal that car is in park as I did on occasion see on display "select neutral"

I think I need to try and get first garage to revert all the ecu coding they have done and then try and connect everything back together and hopefully it will start the car?

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