[n54cutz]

Here’s the run down I owned a 2009 n54 e90 and ended up crashing it after a year of thinking I decided to rebuild it I bought a 335i shell 2007 and got to work pulled the engine from that one and pulled the engine from the crashed one swap the ecus too but when I went to go start it, it didn’t recognize the key from my crashed car I checked all grounds, the lights come on in the car when opening the door, but it doesn’t recognize the Key when I put it in, I’m not sure how to check the cas so I’m hoping you guys can give me a little bit of help thank you

[oVeRdOsE.]

did you swap the CAS ?

[n54cutz]

No that’s where I think I messed up just threw the other ecu on just going to put my old tune on to it

[oVeRdOsE.]

Originally Posted by n54cutz

No that’s where I think I messed up just threw the other ecu on just going to put my old tune on to it

So most likely the reason why, hopefully.

Might need to swap cluster, but not 100% sure.

[n54cutz]

Yeah I’m in the middle of a hurricane I just swapped the dme back to the original so after it’s done I’ll check if it works

[oVeRdOsE.]

no matter what engine, the running car need to have from the donor ;

- dme
- cas
- cluster
- keys.

You can mix and match, but this will required deep coding.

All this pretty easy to swap.

FRM and other module can remain.

[n54cutz]

Yeah I have all of that the only thing I took out was was the dme so I just put it back in I hope it works🙏🏼