Defender – Configurable Stop / Start

Short description: We deliver a factory‑grade activation of the Defender Configurable Stop/Start system. The service installs the wiring, updates the ECU software and validates the feature on‑road.

Technical Overview

Land Rover equips every Defender L663 built from the 2024 model year with a latent Stop/Start module. The hardware – an engine‑mount sensor, a high‑current clutch relay and a dedicated CAN‑bus channel – sits under the driver’s footwell. Nevertheless, the software flag remains disabled unless a dealer or specialist runs a coding sequence. As a result, the vehicle keeps the engine running at idle, missing out on up‑to‑7 % fuel savings.

Our activation process unlocks the module, calibrates the sensor, and updates the Powertrain Control Module (PCM) firmware. After we finish, the engine shuts off automatically when the vehicle stops, and restarts seamlessly when the driver releases the brake.

Why Activate Configurable Stop/Start?

Defender owners benefit from the feature in three ways:

1. Fuel efficiency: The system cuts fuel consumption during city driving, which directly reduces running costs.
2. Emissions reduction: Less idling lowers CO₂ output, helping owners meet increasingly strict environmental standards.
3. Enhanced driving experience: The engine restarts instantly and quietly, giving a smoother stop‑and‑go feel.

Eligibility & Pre‑Fit Checks

We restrict the service to Defender L663 MY24‑25 vehicles that contain the Stop/Start hardware. Before we start, the workshop should confirm the following items:

• The VIN confirms a 2024‑2025 build (year code “X” or “Y”).
• The PCM part number matches 8U1060 and the firmware version is 5.04 or newer.
• The torque sensor and clutch relay are present and securely connected.
• The high‑speed CAN‑bus shield shows no damage or loose pins.

If any item is missing, we can supply the required part and fit it as an optional kit.

Activation Procedure – Step‑by‑Step

1. Diagnostic connection: We attach a JLR TechTool cable to the OBD‑II port and open the “Powertrain” module.
2. Firmware verification: We read the PCM version, confirm the presence of the Stop/Start hardware and record the current calibration data.
3. Software enable: In TechTool → Vehicle Setup → Stop/Start we select “Enable Configurable Stop/Start”. The tool writes the activation flag to the PCM and uploads the latest Stop/Start control map (v2.1).
4. Sensor calibration: We run the “Torque Sensor Calibration” routine so the PCM recognises the exact engine‑mount load range.
5. Clutch relay test: We command the PCM to energise the relay while the engine runs at idle; the test confirms that the relay can handle the required current.
6. Functional road test: We drive the vehicle in city traffic, bring it to a complete stop, and watch the engine shut off after three seconds. We then release the brake and confirm that the engine restarts within 0.8 seconds, without jerking.
7. Documentation: We export a full activation report (VIN, timestamps, PCM firmware) and hand the customer a printed “Configurable Stop/Start Activation Certificate”.

Benefits for Workshops & Fleet Managers

• High‑margin revenue: We charge £329 + VAT for a complete activation, which includes diagnostics, firmware flashing and certification.
• Repeatable process: The same coding steps apply to every eligible Defender, therefore you train technicians only once.
• Compliance assurance: The activation respects EU emissions regulations because it enables a factory‑approved fuel‑saving function.
• Customer retention: Offering a genuine JLR stop/start upgrade differentiates your service centre and encourages owners to return for future updates.

Pricing & Ordering Information

Our standard package includes:

• Full diagnostic session with JLR TechTool.
• Activation of the Configurable Stop/Start flag.
• PCM firmware update to the latest Stop/Start map.
• Torque sensor calibration and clutch‑relay verification.
• On‑road functional test.
• Electronic activation report and printed certificate.
• 12‑month warranty on all coding and software work.

Price: £329 + VAT. If the vehicle lacks the torque sensor, we offer a retrofit kit (part 8U1185) for £149 + VAT.

To place an order, complete the JLRCoding contact form, select “Defender – Configurable Stop/Start” and attach a copy of the vehicle’s Service History or VIN verification.

Frequently Asked Questions (FAQ)

Do I need to replace any hardware?

No – every Defender built from 2024 onward already contains the necessary sensor and relay. Only the software flag requires activation.

Can I disable Stop/Start later?

Yes – we use the same diagnostic tools to clear the activation flag, which returns the vehicle to its original idle behaviour.

Is there a warranty on the activation?

Yes – we provide a 12‑month warranty that covers any coding errors or calibration issues. The hardware remains under the standard JLR parts warranty.

Will the activation affect my insurance?

Most insurers treat stop/start as a neutral feature, so premiums stay unchanged. Nevertheless, you may wish to inform your provider of the upgrade.

Contact JLRCoding Support

Email: support@sx-tool.com
Phone: +86 13823784841

Blog page description: Detailed guide to activating Configurable Stop/Start on Land Rover Defender L663. Includes hardware checklist, JLR coding, sensor calibration and on‑road verification.

Blog page tags: Defender Configurable Stop/Start, Land Rover Defender stop start activation, JLR stop start coding, MY24 Defender fuel saving, Powertrain Control Module update, JLRCoding