Special Function SW32 & SW33

ARM OFF Function Disable JLR Alarm Systems

Professional alarm system control for Jaguar Land Rover vehicles during key programming and diagnostics. Work without triggering vehicle security systems.

How It Works Get Lock50 HW04
2 Methods
SW32 & SW33
2010+
Model Years
Instant
Activation
Safe
No Damage
Understanding ARM OFF

What is ARM OFF?

ARM OFF is a special function that temporarily disables the vehicle's alarm system, allowing technicians to perform key programming and diagnostics without triggering security alerts.

The Problem: Active Alarm System

When working on JLR vehicles with all keys lost or during certain diagnostic procedures, the vehicle's alarm system may be active and trigger continuously, making it impossible to:

OBD Communication Blocked

BCM blocks OBD port access when alarm is active

Constant Horn & Lights

Vehicle continuously triggers alarm sirens

Cannot Program Keys

Security lockout prevents key programming

Diagnostic Failures

Module programming attempts fail

The Solution: ARM OFF Function

Lock50's ARM OFF function sends a special command to the vehicle's BCM to temporarily disable the alarm system, giving you full access to perform your work:

Alarm Silenced

Horn and lights stop triggering immediately

OBD Access Restored

Full communication with vehicle modules enabled

Key Programming Enabled

Program keys without security interference

Work Uninterrupted

Complete diagnostics and programming smoothly

ARM OFF in Action

See the Lock50 software interface and required hardware

Software Interface

Lock50 ARM OFF function via OBD connection

Lock50 SW31 OBD ARM OFF software interface screenshot showing the alarm disable function

The software provides a simple one-click interface to disable the alarm system via OBD or CAN wire connections.

HW03-B CAN Adapter

No-solder CAN wire connection adapter

HW03-B CAN wire adapter for direct vehicle CAN network connection without soldering

Plug-and-play design - Connect directly to vehicle CAN2 wires without soldering

Bypasses BCM blocks - Works when OBD port is inaccessible

HW04 Key Copy from EEPROM Dump

Advanced key duplication and programming from KVM/RFA EEPROM data

HW04 Lock50 licenses showing ALARM OFF and key programming capabilities for 2017-2024 JLR vehicles
RFA MCU Key Add/Copy
RFA MCU data key add and copy interface showing JPLA K8D2 M9R2 J9C3 key types

RFA module key management - Add or copy keys from EEPROM dump data

BCM Key Emulation (2017-2026)
Emulate keys from BCM EEPROM data for 2017-2026 vehicles

SW08: Emulate keys from BCM EEPROM data for emergency start

Key Copy Capabilities

Create working key copies directly from KVM or RFA EEPROM dump data:

Copy from KVM EEPROM - Extract key data from KVM dump and write to new key
Copy from RFA EEPROM - Extract key data from RFA dump and write to new key
Use Change ID keys - Program Change ID keys directly from dump data

Adding Fixed ID Keys to Dump

You can also add any Fixed ID key to the KVM or RFA dump file, but this requires additional steps:

Step 1: Add the Fixed ID key data to the dump file
Step 2: Write the modified dump back to the KVM or RFA module
Step 3: The vehicle will now recognize the new key ID

Important Limitation: Added Fixed ID Keys

Keys that are added to the dump (Fixed ID keys that weren't copied from existing data) have limited functionality:

Cannot Work For:

  • • Emergency Start
  • • Remote Functions
  • • Keyless Entry

Can Work For:

  • • Standard Ignition Start
  • • Basic Key Recognition

Why? Fixed ID keys added to the dump are only registered in the KVM/RFA module. They are not synchronized with other vehicle systems (BCM, RFR) required for emergency start, remote, and keyless functions.

Two Methods Available

ARM OFF Methods

Lock50 provides two different ARM OFF methods depending on your vehicle's system and preferred connection method

SW32

OBD & CAN Wires Method

Vehicle Compatibility

KVM System Vehicles (2010-2020+)

Connection Options

OBD Port (HW03-D Cable)

Standard OBD-II connection

CAN Wires (HW03-B Adapter)

Direct CAN2 network access - no soldering

KVM Adapter (HW03-C M2 Kit)

Direct KVM module connection

Key Advantages

  • Works when OBD port is blocked by BCM
  • Direct CAN2 network access bypasses restrictions
  • No soldering required with HW03-B adapter
Learn More About SW32
SW33

RFA Adapter Method

Vehicle Compatibility

RFA System Vehicles (2017-2024+)

Connection Method

HW03-C F1+M1 Adapter

Direct RFA module connection - no soldering required

Key Advantages

  • Designed for newer RFA system vehicles
  • Direct module access bypasses all BCM blocks
  • Works with locked RFA modules
  • Requires HW04-C or HW04-C+ package
Learn More About SW33

Quick Comparison

Feature SW32 SW33
Vehicle System KVM (2010-2020+) RFA (2017-2024+)
Connection Type OBD / CAN Wires RFA Adapter
Required Package HW04-A+ HW04-C+
Soldering Required
Hardware Gallery

Required Adapters & Kits

Click any image to view full size

HW03-B CAN wires adapter kit for direct vehicle CAN network connection
SW32

HW03-B CAN Kit

CAN wire adapter for direct connection

HW03-C RFA and KVM adapter kit for all keys lost scenarios
SW32/33

HW03-C Full Kit

Complete RFA/KVM adapter set

HW03-C M1 adapter for RFA module direct connection
SW33

HW03-C M1

M1 adapter for RFA modules

HW03-C M2 adapter for KVM module direct connection
SW32

HW03-C M2

M2 adapter for KVM modules

Need Help Choosing?

HW03-B: For CAN wire connections (SW32) • HW03-C M1: For RFA modules (SW33) • HW03-C M2: For KVM modules (SW32)

SW32 Function

SW32: ARM OFF via OBD & CAN Wires

For KVM system vehicles (2010-2020+) using OBD port or direct CAN wire connections

Required Hardware for SW32

Lock50 HW04 Tool

Requires HW04-A, HW04-B, HW04-C, or HW04-C+ package

SW32 available on HW04-A and higher packages

Connection Adapters

Choose one:

HW03-D (OBD Cable)
HW03-B (CAN Wires Adapter)
HW03-C M2 Kit (KVM Adapter)

How to Use SW32 ARM OFF

1

Connect Tool

Connect Lock50 HW04 to vehicle using one of the methods:

  • OBD Port: Use HW03-D cable
  • CAN Wires: Use HW03-B adapter
  • KVM Direct: Use HW03-C M2
2

Launch SW32

Open Lock50 software and navigate to:

Special Functions → SW32

"Alarm OFF via OBD & CAN Wires"

3

Execute Command

Click "ARM OFF" button and wait for confirmation

Alarm disabled - proceed with your work!

Which Connection Method to Use?

OBD Port (HW03-D)

✓ Use When:

  • • OBD port is accessible
  • • Standard connection works
  • • No BCM blocking

Easiest and fastest method

CAN Wires (HW03-B)

✓ Use When:

  • • BCM blocks OBD port
  • • Alarm prevents OBD access
  • • Need CAN2 direct access

No soldering - plug and play

KVM Direct (HW03-C)

✓ Use When:

  • • Both OBD and CAN blocked
  • • Direct module access needed
  • • Working with KVM directly

Most direct method

Important Technical Information

CAN Wire ARM OFF: Package Compatibility & Alternatives

Understanding which method works for your vehicle year and configuration

CAN Wire ARM OFF Works on All Packages

SW32 (CAN Wire ARM OFF) is available on HW04-A, HW04-B, HW04-C, and HW04-C+ packages. You don't need the highest package to use CAN wire connections for ARM OFF.

HW04-A

HW04-B

HW04-C

HW04-C+

Can't Locate CAN Wires? Use HW03-C Instead

HW03-B Adapter

Requires manually locating the vehicle's CAN2 wires (usually under dashboard)

Challenge: Some vehicles have difficult-to-access CAN wire locations

HW03-C Adapter

Automatically connects to CAN wires when you plug adapter into KVM module

Advantage: No need to locate or access CAN wires manually!

Pro Tip: The HW03-C M2 adapter plugs directly into the KVM module. Since the KVM is already connected to the vehicle's CAN network, you get automatic CAN wire access without hunting for wires under the dashboard!

ARM OFF Method by Vehicle Year

2010-2020 Vehicles

✓ CAN Wire ARM OFF works perfectly for these model years

Use HW03-B if you can locate CAN wires
Use HW03-C M2 to plug into KVM (automatic CAN connection)

2020-2026 Vehicles (UWB Disabled)

If UWB (Ultra-Wideband) is turned OFF in the vehicle and standard ARM OFF methods don't work

Last Resort Method - SW08 BCM EEPROM Emulation:

  1. 1. Read BCM EEPROM data from the vehicle
  2. 2. Use SW08 to emulate BCM EEPROM and create emergency start key
  3. 3. Use emergency key to start vehicle
  4. 4. Then perform ARM OFF via CAN wires

Important: Try standard CAN wire ARM OFF methods first. SW08 BCM EEPROM emulation should only be used when all other methods fail to disable the alarm.

2020-2026 Vehicles (UWB Enabled)

If UWB (Ultra-Wideband) is turned ON in the vehicle

Requires Package C or C+

Need HW04-C or HW04-C+ package
Use SW36 (Duplicator Key Copy) function
This creates a working key to disable alarm before ARM OFF

Note: UWB-enabled vehicles require advanced key duplication capabilities only available in C/C+ packages

Still Not Sure Which Method?

Contact our technical support team for personalized guidance based on your specific vehicle

Get Expert Help
SW33 Function

SW33: ARM OFF via RFA Adapter

For RFA system vehicles (2017-2024+) using direct RFA module connection

Required Hardware for SW33

Lock50 HW04-C or C+

Requires HW04-C or HW04-C+ package only

SW33 is exclusive to C and C+ packages

HW03-C F1+M1 Adapter

Direct RFA module connection adapter with F1 and M1 cables

No soldering required - plug and play connection

Important Note

SW33 requires the HW04-C or HW04-C+ package. If you have HW04, HW04-A, or HW04-B, use SW32 instead with CAN wire or OBD connections.

How to Use SW33 ARM OFF

1

Locate RFA

Find the RFA module in the vehicle (usually under driver's seat or dashboard)

2

Connect Adapter

Attach HW03-C adapter with F1+M1 cables directly to RFA module pins

3

Launch SW33

Open Special Functions → SW33 "Alarm OFF via RFA Adapter"

4

Disable Alarm

Execute ARM OFF command and wait for success confirmation

Why SW33 is Special

Works with Locked RFA

Direct module access bypasses all security locks

Bypasses BCM Restrictions

No OBD or CAN bus limitations

Designed for Latest Vehicles

Optimized for 2017-2024+ RFA systems

No Soldering Required

Simple plug-in connection to RFA module

Quick Setup

Faster than OBD when alarm is blocking access

Professional Solution

Industry-leading method for RFA vehicles

Common Scenarios

When to Use ARM OFF

Real-world situations where ARM OFF function becomes essential

All Keys Lost

Vehicle has no working keys and alarm is constantly triggered. Cannot access OBD or perform any programming.

Solution: Use ARM OFF to disable alarm, then program new keys

OBD Port Blocked

BCM is blocking OBD port communication due to active alarm system. Standard diagnostic tools cannot connect.

Solution: Use ARM OFF via CAN wires to bypass BCM block

Module Replacement

After replacing KVM, RFA, or BCM module, alarm triggers because vehicle doesn't recognize new module.

Solution: ARM OFF first, then program new module

Theft Recovery

Vehicle recovered after theft attempt with damaged ignition. Alarm constantly active, preventing any work.

Solution: ARM OFF to silence alarm during repair

Dead Battery Work

After long-term battery disconnection, vehicle security system enters lockdown mode when reconnected.

Solution: ARM OFF before attempting key programming

Immobilizer Fault

Immobilizer system malfunction causing continuous alarm triggers. Cannot diagnose or repair with alarm active.

Solution: ARM OFF to access diagnostic functions

Best Practices for ARM OFF

Do This

  • Always run ARM OFF before attempting key programming on alarm-active vehicles
  • Use CAN wire method when OBD is blocked by BCM
  • Verify alarm is silenced before proceeding with work
  • Keep vehicle in safe location during ARM OFF process

Don't Do This

  • Don't attempt key programming while alarm is active
  • Don't disconnect battery to stop alarm (causes other issues)
  • Don't force OBD connection when BCM is blocking it
  • Don't skip ARM OFF thinking you can work around alarm

Related Key Programming Scenarios

All Keys Lost Guide

Complete guide to programming new keys when all keys are lost

Locked RFA Solutions

SW36 key copy method for locked RFA/BCM modules

Hardware Adapters

View all HW03 adapters and cables included with Lock50

Supported Vehicles

Vehicle Compatibility

ARM OFF functions work across a wide range of Jaguar and Land Rover vehicles

SW32

KVM System Vehicles (2010-2020+)

Range Rover (L405)

2013-2022

Range Rover Sport (L494)

2014-2022

Range Rover Evoque (L538)

2012-2019

Range Rover Velar

2017-2020

Discovery 4 (L319)

2009-2016

Discovery 5 (L462)

2017-2021

Discovery Sport (L550)

2015-2020

Jaguar F-Pace

2016-2020

Jaguar XE

2015-2020

Jaguar XF

2015-2020

Jaguar XJ (X351)

2010-2019

Jaguar F-Type

2013-2020

SW33

RFA System Vehicles (2017-2024+)

Defender (L663)

2020-Current

Range Rover (L460)

2022-Current

Range Rover Sport (L461)

2023-Current

Range Rover Evoque (L551)

2019-Current

Range Rover Velar

2021-Current

Discovery 5 (L462)

2021-Current

Discovery Sport (L550)

2020-Current

Jaguar F-Pace

2021-Current

Jaguar E-Pace

2018-Current

Jaguar I-Pace

2018-Current

Jaguar XE

2020-Current

Jaguar XF

2020-Current

Coverage Note

The lists above show common models. ARM OFF functions typically work on all JLR vehicles within the specified year ranges. If you have a specific model not listed, contact support to verify compatibility.

Common Questions

ARM OFF FAQ

Answers to frequently asked questions about ARM OFF functionality

Is ARM OFF permanent or temporary?

Do I need special tokens or credits to use ARM OFF?

What if ARM OFF doesn't work via OBD?

Can I use ARM OFF on vehicles with UWB keys?

Does ARM OFF damage any vehicle systems?

How long does it take to execute ARM OFF?

What's the difference between SW32 and SW33?

Do I need to run ARM OFF every time I program a key?

Get ARM OFF Capability

ARM OFF is included with Lock50 HW04 packages. Choose the right package for your needs.

HW04-A

Standard Plus

SW32 (OBD & CAN)
SW33 (RFA)
Learn More

HW04-B

Advanced

SW32 (OBD & CAN)
SW33 (RFA)
Learn More
POPULAR

HW04-C

Professional

SW32 (OBD & CAN)
SW33 (RFA)
Learn More
MASTER

HW04-C+

Master Kit

SW32 (OBD & CAN)
SW33 (RFA)
Learn More
View All Products Contact Support