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Understanding KVM vs RFA — JLR Key Modules Explained
Tuesday, August 17, 2021
Understanding KVM vs RFA
JLR key security centres on two modules: the KVM (Keyless Vehicle Module) and the RFA (Remote Function Actuator). Knowing the difference tells you which job — and which tool — you are dealing with.
Watch the Lock50 Demo
More demos on the Lock50 YouTube channel.
What the RFA does
The RFA authorises keys and keyless entry/start. On newer cars it is security-locked and must be unlocked before adding keys.
Where KVM fits
Earlier or different-market vehicles use a KVM performing a similar role. Lock50 supports reading and programming both.
Which Lock50 Tool Do You Need?
- The HW04-B Tool Kit flashes and programs locked RFA/BCM modules.
- For the widest coverage use the HW04-C Peace Edition.
Frequently Asked Questions
What is the difference between KVM and RFA on JLR?
Both authorise keys; the RFA is used on most modern JLR vehicles and is often security-locked, while KVM appears on earlier/other-market cars. Lock50 supports both.
Can Lock50 unlock a locked RFA?
Yes, over OBD with the HW04-B or HW04-C+ without module removal.
Compare the full range and choose your tool: Lock50 HW04 OBD Tools.
???? About this video
Published Jun 28, 2024 on the official Lock50 YouTube channel
This video demonstrates using a specialized programmer tool, likely the Lock50 HW53 SPC560B60L3 RFA, to make a JLR (Land Rover) KVM module virgin without soldering. The process involves erasing and unlocking the 9S12 MCU, adjusting data partitions, and then loading virgin D-FLASH, EEE, and P-FLASH files onto the module. This enables key programming for Land Rover vehicles from 2010-2018 (KVMS) and 2017+ (RFA) without component removal.
What this video covers
- JLR KVM virginise
- Land Rover KVM unlock
- 9S12 MCU programming
- RFA module virgin
- Jaguar KVM key programming
- Bench no soldering tool
- HW53 programmer
- VVDIProg JLR
- Keyless vehicle module
- Erase KVM data
- Load virgin files
- Immobilizer programming
▶ Read the full spoken transcript
The video opens with a title screen displaying "HW53 SPC560B60L3 RFA Unlocked MCU Reading Programmer Tool for Bench No Soldering with HW03 2017+ RFA Virginise 2010 to 2018 KVMS Virginise 2017 + RFA" and "JLR KVM Make virgin No Soldering Erase Unlock 9s12 Mcu and Load Virgin files". The main interface of a software application named "Check VVDIProg" is shown. The user clicks "Read ID". The log shows "Initialization success!", "Start communication.", and "Operation success". The ID is read. Next, "Erase Unlock" is clicked, and a prompt asks "Confirm erase all data and unlock the chip?". The user selects "Yes". The log indicates "Initialization success!" and "Chip is erased". An attempt to "Read Partition" results in a "Partition information error(00)". The user then clicks "Write Partition", and a prompt asks "Write Partition will erase D-FLASH and EEE data". The user selects "Yes". A "Set partition" window appears, where values for EEE (0-16) and DFlash (0-128) are adjusted to 16 and 96 respectively. After clicking "OK", the log shows "Initialization success!", "Start communication.", and "Operation success". The user opens a file browser and selects "D-FLASH 9M125.bin" to open under the D-FLASH tab. After confirming to "Continue to write?" with "Yes", the software writes the D-FLASH data, showing a progress bar to 100%. Next, the user opens "EEE.bin" under the EEE tab, confirms to write, and the EEE data is written to 100%. Finally, "P-FLASH.bin" is opened under the P-FLASH tab, and after confirmation, the P-FLASH data is written, displaying a progress bar up to 47%. The video ends with the initial title screen.
