This guide walks you through the process of programming a new key for a 2021 Harley-Davidson motorcycle using the OBDSTAR MOTOMASTER diagnostic tool. Follow the steps below to complete the procedure smoothly and successfully.
Required Tools:
MOTOMASTER
Main Cable
M041 Cable
New Key
Step 1: Connect the Motorcycle
Locate the diagnostic port on your Harley-Davidson and connect it to the MOTOMASTER using the main cable and M041 cable.
Turn on the ignition to power the system.
Step 2: Select the Vehicle Model
On the MOTOMASTER:
Tap IMMO.
Use the search bar in the top-right corner to quickly locate your model.
Navigate to:
[HARLEY DAVIDSON] → [HARLEY DAVIDSON V40.32] → [BCM – Board Control Module]
Tap [ECU Information] to view and verify module details.
Step 3: Access Special Functions
Select [Special Function], then tap [Agree] to continue.
If you don’t have a working key, you must retrieve the PIN code first to activate the vehicle.
Choose [PIN read/change] if you wish to modify the PIN later.
Step 4: Program the New Key
If you already have an available working key, choose [Key FOB 1 assignment/replacement] to begin programming.
The device will prompt you to enter the Key ID.
Open your new key fob—inside, you will find an alphanumeric code. This is your Key ID.
Step 5: Finalize Programming
Follow the on-screen instructions and place the key near the motorcycle as required.
Once the device confirms the key has been successfully programmed, tap OK.
Turn on the ignition. If the engine starts normally, the new key has been successfully programmed.
Watch the full demonstration here:
More tools available at:
www.obd2shop.co.uk
