Audi A6 C6 EZS Kessy All Keys Lost with Autel IM608 via OBDII Mode

Here’s the instruction on Audi A6 C6 4F (2004-2011) EZS kessy all keys lost with Autel MaxiIM IM608  by OBDII mode without removing BCM immo box. Maybe someone need instruction to get same work do to.  Xhorse VVDI2 cannot this 100%, but have to remove immo box to read data and then prepare dealer key.  It’s a major pain in the butt to remove the module. IM608 procedure is much easier and quick.


This is an Audi A6 C6 4F year 2005. The customer has lost all keys.  I have to connect fuse box wire 15 and 30 fuse and get electric power on. Took about 10 minute work, very easy job, made Dealer key and program the key (aftermarket key) with IM608.
IM608 has no instruction for this car and situation. Have to use google to power up (bridge 15 & 30).

Autel Im608 Audi A6 C6 4F AKL 1

Autel Im608 Audi A6 C6 4F AKL 10

Autel Im608 Audi A6 C6 4F AKL 2
Internet was connected, all time when use device, don’t know how much is depends or not, but key programmed success and customer have a great day to get the car running again.
On instrument cluster is nothing immo data it not need to come on, it just give extra power to elv and ecu then you can read the data and make it run.

Autel Im608 Audi A6 C6 4F AKL 3

Audi A6 C6 4F All keys lost OBDII procedure with Autel IM608:
Step 1: Read IMMO Data
Step 2: Read PowerClass (Read CS & PIN)
Step 3: Modify the IMMO Data
Step 4: Make a dealer key
Step 5: Adapt the key to the immobilizer system

Autel Im608 Audi A6 C6 4F AKL 4

Autel Im608 Audi A6 C6 4F AKL 5

Autel Im608 Audi A6 C6 4F AKL 6

Autel Im608 Audi A6 C6 4F AKL 7

Autel Im608 Audi A6 C6 4F AKL 8

Autel Im608 Audi A6 C6 4F AKL 9

Those fuses you jumped in 2007 Audi A6 would be:
15 amp fuse 31 Rev. lights, multitronic, eng. comp.
30 amp fuse 38 wiper system

Autel Im608 Audi A6 C6 4F AKL 11

All keys lost guide with vvdi2

Here’s the Audi A6 C6 4F All keys lost guide with Xhorse VVDI2+ VVDI Prog if have them in hand. Short a fuse in order to wake up system, read all data obd, make dealer key then learn in. Quick job. Check main steps below

  • 1. Remove EZS
  • 2. Read EZS data with VVDI Prog
  • 3. Calculate CS

In VVDI2 software, go to Audi- Sepcial function- EEPROM data processing tool
Select “ECU Simons PPDIX – Reset component protection data”
Click “Load” the load the data that read out just now, open it.

It calculates the CS code. Take a picture to record it.

  • 4. Calculate PIN

Select “ECU Simons PPDIX – Security Access Code”

Click “Load” again to load the file.

PIN code is read out, record PIN code.

  • 5. Learn key 

In VVDI2 click “Learning Key”- “Audi A6/Q7” Option.

Input the CS and PIN code, you will see “Learning Key” and “Generate dealer key” are enabled.

Click “Generate dealer key”

Generate dealer key is done.

Next is to learn key

Disconnect the short insurance line (fuse box).

Connect back

Take out the chip from VVDI2 and put it into the ignition data coil.

Click “Learning Key”

Open and close car door, turn on ignition, press down brake.

Click “Learning Key”.

Learning successfully.

  • 6. Generate remote


Click “ok”, select Chip type 9S1201128, the aim to read EZS-KESSY(J518)EEPROM is to generate OEM remote control.


Generate OEM remote control.

Vertical put remote controller on the coil of vvdi2

Following the prompt the put the remote controller, click “Next”

Remote control is generated successfully, assembled key and to test.

Test the key whether it can start the A6.



All keys lost guide with AVDI

1) first, connect by jumper wire the pin 1 + the 16 (A6 2006) of obd2 to have communication with engine ecu, and after with avdi go to Special function of (EZS-kESSY q7/a6) and click (Auto detect – from engine ecu) when it show you 6 cs + pin, so there put your transponder 8E OR remote and in (tag key tool) click Make Dealer key, and follow the procedure of avdi screen.
2) if American system the car so must be your remote part number (4F0 837 220 A) if EUROPE (4F0 837 220 M )