Problem:
Tried to read and write 2006 Mercedes E-Class 350 w211 MED9.7 ECU with Autotuner programmer via OBD.
I wrote the tuned file and got no crank no start.
I can’t read ID or write back original now.
Any help?
Solution:
SOLVED: unplug battery 10mins and I was able to write again. Issue- bad file.
For this protocol, it is always just bench these, ECU is easy to get too so just as quick and safe plus full back up so win win.