This article will share a detailed tutorial of using Key Tool Plus to program all keys lost through OBD for 2011 AUDI A4. Here we go!

Procedure:

Connect VVDI Key Tool Plus to the OBD port of the vehicle via the OBD cable

Go to Immo Programming-> Audi-> Select by type-> Fifth Immobilizer System

Step 1: Read BCM data

Select Read by OBDII-> Read BCM2 Data (OBD II)

Read out the key info 

The total key number is 3 and the current key is not authenticated/ locked/ learned

Disconnect BCM module from power for 2-3 seconds and reconnect again

After reading data successfully, save the data file

Step 2: Make dealer key

Select “A4L, A5, Q6 add a key or lost all key- Don’t need working key”

Then load the BCM2 data read in step 1

Put a key into the coil of Key Tool Plus Pad 

Start to read key… reprogram key info… write data…

Make key successfully

Step 3: Learn key

Input the number of keys to be learned

Load the BCM2 data read in step 1 again

Insert the dealer key into the ignition (or nearby ignition coil), open the headlight, and step on the brake before continue

Start to transfer/receive data…

The key is to learn successfully.

Done!

www.eobdtool.co.uk