Standard OBD Programming

Programming Unlocked RFA & BCM

The most straightforward method for programming keys when your RFA and BCM modules are unlocked and fully accessible via OBD-II.

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5 Min

Avg Time

Simple

OBD-II Only

All Years

2010-2026+

Reliable

Proven

SW27 Function

Lock50 HW04-B & C OBD Tool

JLR 2017 to 2024+ New RFA Programming

(Unlocked BCM Supported)

Understanding BCM Lock Status

Most BCMs Are Unlocked

Mostly BCM are Unlocked unless the Dealer has applied the Latest Updates to Lock them Down.

Locking Timeline

The Locking of the BCM starts from 2017 up to 25+ Vehicles.

Mostly 2021+ models are Locked Always

What This Means for You

BCM Unlocked:
You can swap a New RFA and adapt it to work in the Vehicle without having to have a New or Virgin BCM.

Simple Process:
After Swapping RFA and Updating the Software in the Lock50, run the "Replace RFA" command in PEPS Options.

Quick Completion:
The Vehicle will complete the process if the BCM is not locked.

The "Replace RFA" Command

After swapping RFA and updating software, go to PEPS Options and run this command

Success: BCM Unlocked

Vehicle will complete the Replace RFA process successfully and you can proceed with key programming.

Error: BCM Locked

Error message appears:

"2 Keys Required" or "Authentication Failed"

What If BCM Is Locked?

Don't worry - Lock50 has alternative solutions to handle locked BCM scenarios

Option 1

SW28 Function

Bypass Locked BCM & Adapt New RFA

Use SW28 function to bypass the locked BCM

Adapt a new RFA only without a new BCM

Works even when BCM is locked

Learn about SW28

Option 2

SW36 Duplicator

Copy Keys Without Changing RFA

Best for UWB vehicles

Works when car has UWB enabled

Make a copy of keys without changing RFA

Works even when BCM & RFA are both locked

Faster way to make a new key

Learn about SW36

Video Tutorial

SW27 Programming Demo

Watch a complete demonstration of the SW27 function for programming new RFA with unlocked BCM

Step-by-Step Process

Real Vehicle Demo

Complete Tutorial

When to Use This Method

This is the ideal programming method for most standard key programming situations

Adding Spare Keys

Customer wants additional keys and RFA module is accessible

Lost Key Replacement

Programming new keys when RFA/BCM modules are still unlocked

Pre-Owned Vehicles

Dealerships adding keys to used car inventory

Simple 3-Step Process

1

Connect OBD

Plug Lock50 into vehicle's OBD-II port

2

Add Key

Follow on-screen prompts to program new key

3

Test

Verify key starts vehicle and all functions work

Important Detection Step

How to Detect a Locked BCM

After swapping the RFA and updating Lock50 software, go to PEPS Options and run the "Replace RFA" command

Lock50 error message displayed when BCM is locked

Error message shown when BCM is locked

BCM Not Locked

The vehicle will complete the Replace RFA process successfully without any errors - you can proceed with standard programming.

BCM Is Locked

Error messages: "2 Keys Required or Authentication Failed" or "Less than 2 Keys found"

SW28 Solution

Use the SW28 option in Special Functions to synchronise the new RFA module - avoids swapping to a new BCM.

Locked BCM Detected?

If you receive the locked BCM error, don't worry! Use the SW28 function in Special Functions to synchronise your new RFA module with the locked BCM vehicle - no need to swap to a new BCM.

Learn About SW28 for Locked BCM

SW27 Programming Interface

Professional Programming Software

See the Lock50 software in action - simple, intuitive interface for programming unlocked RFA and BCM modules

SW27

Connected

Unlocked

Ready

OBD

Protocol

Real-Time Diagnostics

Live connection to RFA and BCM modules shows exact status, allowing you to verify modules are unlocked before programming

Step-by-Step Guidance

Clear on-screen instructions walk you through each stage of the key programming process

Safety Verification

Automatic checks ensure module compatibility and prevent errors before programming begins

Fast & Simple

Complete key programming in 5 minutes or less with our streamlined SW27 interface

SW27 Software Features

Live Connection

Real-time module communication

Operation History

Track all programming sessions

Detailed Logs

Complete diagnostic records

Auto Updates

Latest features automatically

Experience SW27 Today

Get started with professional key programming using our intuitive SW27 software

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Available on All Lock50 Models

Standard programming for unlocked modules - different access levels by model

Token Required

HW04 (Pay As You Go)

HW04-A (Entry Level)

Purchase programming tokens as needed

Unlimited Included

HW04-B (Professional)

HW04-C (Advanced)

HW04-C+ (Master Kit)

No per-key costs - program unlimited keys

Ready to Start Programming?

Choose the Lock50 model that matches your business volume

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