How to Clone Passat B7 EDC17C46 with Foxflash

 Here is the real user’s working experience on VW Passat B7 EDC16CP46 ECU cloning using foxflash:

It’s a VW Passat B7 2013 CFFB with Bosch EDC17C46 ECU.
The ecu was broken, car didn’ t start, reading on bench was not working.

The car wouldn’t start, some water had gotten into the ecu through the plastic plug. The car could be diagnosed on the ecu but there was no error. I tried to read the ecu in the bench but every time it told me to disconnect and reconnect the power and nothing happened. I had another ecu with the same part number from a Passat CC, so I backed it up in the bench. I saw that the one from the car didn’t work in the bench and I tried in boot mode, where initially it didn’t read it, it had to be read the password, I read in the obd mode the password, obd cable connected to the bench, save password on the pc, then I read the ecu for backup in boot mode. I used the cloning module in foxflash where I added the file read in boot from the defective ecu and the file read in the bench from the functional new used ecu. I wrote the generated flash file on the new used ecu, that was all, the car started. Checksum was done in writing the foxflash.

How to clone:
– boot mode: error unlocking password read
– foxflash in obd mode read and saved the password

For obd pasword read with ecu on the bench, you must connect 2 red + 12 volt wires instead of green wires and disconnect cnf and boot pins. After save the password the 2 red wires must changed back with 2 green wires, connect CNF and boot pins for boot mode read.
– now boot mode read and write works

For boot mode you must connect 2 green wires, kline/ignition, CNF and boot pins.
– ecu cloned with foxflash cloning tool

Images attached: