VAG Key Device, V2 Passat

VAG Key learning device

The VAG key-learning device is dedicated to program keys for the vehicles equipped with the Immo III, Immo IV immobilizer and EDC16/EDC17/MED9/MED17 engine control unit. The key-learning device is equipped with a key programmer, which allows to pre-code the blank keys The device can program 1 to 4 keys to the car. The device consists of three parts: - OBDII dongle - ABS cable - Key-learning device

Key learning procedure

You should specify the number of keys you want to learn using DIP Switch 1, SW2, SW3 and SW4 In the table below you can find how the number of keys is specified:

The procedure is performed in the following steps:

1. Specify the number of keys which will be learned
2. Connect the OBDII dongle
3. Connect the ABS cable. NOTE: Not all cars are equipped with the connector where you can connect this cable. The ABS cable is just a medium to the internal powertrain CAN-Bus. So if the car does not have such connector, you can make an adapter. The adapter should provide 12V and access to the orange/black and orange/brown wires of the car (CAN-H and CAN-L of the internal powertrain CAN-BUS)
4. Connect the key-learning device to the ABS cable. A “beep” sound will indicate the start of the procedure and it will start blinking fast in GREEN color. This means that the PIN and CS are being read.
5. Once the procedure is completed, the key-learning device will indicate success with two fast "beep" sounds and the LED will start blinking slowly in GREEN.

1. Remove the ABS cable and the OBDII dongle
2. If the car is with mechanical ignition - put the new key on the ignition and turn ignition ON. Put the ring of the antenna over the new key. The new key should have an empty transponder. If the car is with electronic ignition hold the key in the ring of the antenna.
3. Put the key-learning device in the OBDII. It should start working by blinking fast in GREEN/RED which means that the transponder preparation and key-learning is in progress. Once again, it will indicate end of the procedure with two quick beeps and it will start blinking slowly in GREEN. - if the car is with mechanical ignition and you learn just one key, the device should complete the procedure without any interaction of the customer. - if the car is with mechanical ignition and you learn more than one key, you should look for indication on the dashboard that the keys are adjusted (for example “2/1” on the dashboard) In this case the first key which is in the ignition is learned automatically, for each next key you should turn ignition ON. - if the car is with electronic ignition (Passat B6/CC/B7) – Only for these cars, it is necessary to wait 5 minutes before the keys can be learned. So when the device starts blinking in RED/GREEN for a while (for example for more than 1 minute) – you can put the key in the ignition lock to first position. After the procedure is completed, put each next key to first position (you should hear the unlocking sound of the electronic steering lock)

NOTE: All working keys will be erased and cannot be used anymore. So if you want simply to test the device, make a backup of the immo-data first. NOTE: For many of the VAG cars the first part of the procedure may be skipped and you can proceeed directly to step 7. Only if you don't have a success (you don't go to the point where the device blinks in red/green) then proceed from step 1. 3. Indications Following indications shows the final result of the device:

• –  Success indication: After finished with success you can hear two short beeps and the LED is blinking slowly in GREEN
• –  Error indication: In case of some error the LED is blinking in RED fast. The buzzer make a long beep and then 1 to 5 short beeps indicating the error type as follows: - 1 short beep – no connection with the engine control unit - 2 short beeps – PIN/CS of the ECU do not match with the PIN/CS of the immobilizer - 3 short beeps – Cannot pre-code the transponder. Either the transponder is not in the ring or it is locked. Transponders locked with this key-learning device can be re-used from it. - 4 short beeps – key-learning procedure is rejected from the immobilizer. - 5 short beeps – no connection with the immobilizer
• –  LED is blinking in green fast – PIN/CS are read at the moment
• –  LED is blinking in green/red fast – transponder is pre-coded and key-adaptation is initiated in the immobilizer

4. Supported cars:

All Immo III/Immo IV (i.e. All Seat/Skoda/VW cars except and MQB/MLB cars, Audi models are not supported) - supported are cars with Bosch ECUs (EDC16/EDC17/MED9/MED17) till ~2015