Problem:
I have Ford Focus 2021, all keys have lost, alarm is on and its keyless system.
Tried with AVDI, after 10 ish minutes I have two bips of horn and I get message unknown system.
With Autel IM608, similar, security access fail…..
I took out BCM and read dFlash on bench.
Back on car, after 10 minutes waiting time, I get two bips, then folowed by instructions on Autel, I load readed file but after, maybe 1 minute I getting message Security access failed.
Any one have any advice or experience to share?
Here is the clue.
Check the BCM serial number first.
If MU5T or NU5T then no aftermarket tool will do it , you will need J2534 and FDRS.
You can normally read the BCM part number via OBD with most tools so you can quickly check if its MU5T or NU5T.
