Here’s the tutorial on unlocking/renewing BMW smart key comfort access (non OEM) remote with xhorse vvdi key tool max remote maker.
OEM come sealed so you have to have aftermarket shell to replace OEM. Old shell is trash after cutting open!
BMW 2004-2010
Smart key/Comfort Access
FCC KR55WK49147
Aftermarket
Remote (None OEM)
Chip PCF7953
Status: already locked.
In key tool max, go to Special function- Remote Renew- BMW- 5WK49147 E series 315MHz Smart Key
You have two options to unlock smart key, by xhorse renew adapter or soldering
key tool max will show you wiring diagam
We don’t have renew adapter so we have to solder
A renew cable is required. You can make your own renew cable or buy additionally
Follow key tool max wiring to connect key board with renew adapter
Press UNLOCK
Renew smart key success
the smart remote has been unlocked successfuly
Install key shell. The smart key can be programmed to car with obd programmers.