2015 BMW 740Li F Chassis CAS4 add new key using Xhorse VVDI Key Tool Plus. Not unlock but read the DFLASH info along with the PFLASH.
Step 1: read original CAS4 DFLASH and PFLASH data
Use the screwdriver to dismantle the CAS from the car
Then go to get everything set up
Take out the 1N35H PCB from CAS4 with a plastic pry tool
Check all pins are good
Go to CAS4+ (IN35H)- backup interface to read DFLASH and PFLASH data in sequence
Make sure the connection diagram is correct
Read DFLASH firstly
It starts to detect the connection, configure the chip, crack and read.
Read DFLASH data successfully
Save it with a new filename
Next go to read PFLASH and save the original data
Step 2: Generate key with EEPROM
Use the CAS4/CAS4+ test platform
It’s gonna be connected to the VVDI Key Tool Plus PAD
Automatically diagnose models
Generate keys via EEPROM
Put the key into the key tool plus hole to make dealer key
Select the system type- CAS4+ (5M48H/1N35H)
Load the EEPORM dump file
Select the file which was backup with DFLASH
Select the key to be generated
Have a working key, so select the related item and insert working key to programmer and continue
Read data successfully
Take a picture of this result because the ISL us at the bottom, very important and crucial when you’re doing these type of cars
Prepare dealer key needs about 30 seconds. The window maybe false dead, wait for the end.
Input the new key to programmer then continue to start programming
Key written successfully
Don’t need to write it back into the EEPROM.
Go to check this key works or not.
Turn off the dash light, that’ll be off, nothing turn on.
Put the new key into the slot to learn
Press the button on the test platform three times
Then put everything back into the car
After that, go to cut this key with xhorse key cutting machine
Finally, test the original key and new key, both work good.