Thursday, 10 July 2025

How to use Key Tool Plus to Program 2010 Audi S5 via OBD

In this tutorial, we’ll guide you step-by-step on how to program a 2010 Audi S5 (all keys lost) using Xhorse VVDI Key Tool Plus via OBD. The full procedure includes reading and saving BCM2 data, making a dealer key, and learning the key to the vehicle.

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Step 1: Read & Save BCM2 Data

1. Go to: Immo Programming > BMW > Audi > Automatically Diagnose Models > Start Programming

2. Once the 5th generation immo system is detected, click OK.

3. Choose Read BCM2 Data > OBD Identify BCM2 Type.

4. Follow on-screen prompts:

If you have a key: insert it into the ignition.

If all keys are lost: turn on hazard lights, press and release the brake pedal several times.

5. When prompted:

Read by OBDII > Read BCM2 Data (OBDII) > OK

6. Disconnect BCM module power for 2–3 seconds, then reconnect and click OK to reattempt.

7. Save the BCM2 data file once reading is complete.

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Step 2: Make a Dealer Key

1. Go to: Make Dealer Key > Yes

2. Select:

"Have BCM2 data and all keys lost"

→ Choose A4L, A5, Q5 Add Key or All Keys Lost – No Working Key Required

3. Load the previously saved BCM2 data file.

4. Place a new key into the VVDI Key Tool Plus programmer.

5. Click OK to generate the dealer key.

6. Dealer key will be successfully created.

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Step 3: Learn the Key

1. Select: Learn Key > Input Number of Keys to Learn: 1

2. Load the same BCM2 data file.

3. If you have a working key:

Insert it into the ignition and switch it on.

4. If all keys are lost:

Insert the dealer key into the ignition or near the coil.

Turn on the headlights and press the brake before continuing.

5. Insert each key one by one.

Once a key is successfully learned, the dashboard value X/Y will increase.

If using push start, press START/STOP after each successful key.

6. After all keys are learned, press OK to finish.

7. Test the new key – it should start the vehicle normally.

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All keys programmed successfully!


For more tools and support, visit:

www.obd2shop.co.uk

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