BMW e61 euro auto 525d 2004 - Recode issue with DDE

[Jimbobarang]

Hi guys,

So I made the mistake of offering to look at a relatives car to help them out, and now it has been sitting outside my house for nearly 6 months unable to be driven. :/ I'm an electronics guy but knew very little about coding at the time so had a bit of a learning curve.

He originally got the car from an auction and when it arrived it came complete with an old CAS unit + spare keys in the glove box. Although it did drive, it has recently been unable to pass a UK MOT because the bad coding throws up so many errors on the dash.

I eventually managed to fix the coding issue on the CAS, changing the VIN, FA etc but I could not get the car to sync and start. When I looked at the DDE I realised that it wasn't original, it had been swapped over with the CAS as a pair (without cloning). I'm pretty sure the original DDE was water damaged, but I don't have it so it must have been binned, leaving me trying to resurrect the car with little to go on.

So I have tried pretty much everything anyone has suggested in various other posts but I simply cannot get the car to start. I am using XPROG which I believe to be reading and writing correctly over BDM (I know everyone says it's rubbish but I had to personally pay for the tools to do this). People have issues due to latency but I'm pretty sure that it works ok. I should mention that I have also read the CAS with XPROG and I have been told that the bypass to read the EEPROM may have bricked it ... yay!

I have attempted to set the DDE back to virgin and reflash with ISTA/P ... many times. This appears to work fine but doesn't actually work. I can code as new, set the injectors, write the start code (from either CAS), and then sync but the car still doesn't start.

It always throws -

0x46D3 (18131) (0x48) DDE: Control unit, internal 4
0x4A63 (19043) (0x48) DDE: EWS tampering
0x4203 (16899) (0x48) DDE: Glow control unit

So clearly I must be doing something wrong.

The DDE is 0281012190 7798422

Please does anyone know how to actually put this back to virgin?? In summary - I filled the dump with FF after the software version line but this didn't work once recoded (as above).

Any ideas?? I'm at my wits end.

Thanks in advance.

Cheers,

J

[diga1]

My advice is to buy eng ecu, cas, and keys on ebay and just plug and drive, cheapest
option right now