This is the procedure to help do a spare key to a Passat 2010 (optional solutions)
Method George Alin used:
Remove CCM(comfort) module .read 95320 eeprom … make dealer key … learn key on car ..Done
if it’s a spare deffo through OBD can get 7th byte from working key.
i like to be 100% covered that’s why i choose that method.
Method Jerry King used:
Read cs and pin from vehicle.
Go to transponder tools , find 7th byte with existing key.
Put in the 6 it pulled and insert the old key to find the 7th.
Write the 7 bytes to new key.
Go back to VW tool and write that key.
Go to diagnostics , comfort module program remote.
The entire job takes 5 minutes or less you do not need to pull anything.
My experience applies to USA market only.
Method Jimmy Sadler used:
You can clone the chip then program the remote
The easiest and quickest method for a spare.
It separate from Chip and remote program separately
the chip is in side of the remote just open it up you will see the chip
Method Craig Bowie used:
With the VVDI prog read out of Circuit with the eight leg reader then open VDI to transponder programming pick the car and load the file add key
Credits to all the contribution in the XHORSE group: https://www.facebook.com/groups/xhorsetools/