Reprogramming the Start/Stop System for Land Rover & Jaguar
LR Retrofit reprograms the Start/Stop system on Land Rover and Jaguar vehicles. We use genuine JLR diagnostic equipment to read your vehicle’s current Stop/Start parameters and restore the correct factory configuration for your VIN. You receive a Start/Stop system that operates smoothly and matches the original JLR engineering specification.
What This Service Corrects
Many Land Rover and Jaguar vehicles display Start/Stop not available messages, inactive Stop/Start after a battery replacement, or frequent engine cutouts. The stored parameters in the Engine Control Module, Body Control Module and Battery Monitoring System sometimes differ from the factory build data. Our reprogramming service corrects these values and restores normal operation.
- We correct the Start/Stop enable thresholds in the Engine Control Module.
- We align the Body Control Module Stop/Start parameters with the factory Car Configuration File.
- We reset and calibrate the Battery Monitoring System after battery replacement or module updates.
- We adjust auxiliary battery and dual battery system parameters on applicable models.
- We verify Stop/Start function in all drive modes and environmental conditions.
JLR Technical Process
- We connect to your vehicle through the JLR DoIP and VCI diagnostic interface.
- We read the current Start/Stop parameters from the Engine Control Module, Body Control Module, Gateway Module and Battery Monitoring System.
- We compare these values against the factory As-Built homologation data for your VIN.
- We reprogram the Engine Control Module, Body Control Module and Battery Monitoring System with the correct values.
- We verify the correction with live data, battery state of charge and a road test.
Technical Detail
The Start/Stop system relies on the Engine Control Module, Body Control Module and Battery Monitoring System. We decode the Car Configuration File and replace the incorrect Start/Stop parameters with the correct factory As-Built values for your vehicle. We programme all affected modules in one session. This method maintains full OEM integrity and avoids generic coding tools that cause warning lights and system faults.
We also reset the Battery Monitoring System after every battery replacement. This step allows the system to relearn the battery state of charge and cold cranking performance. Without this reset, the Start/Stop system may remain disabled even with a new battery. Our process restores the complete Stop/Start functionality and eliminates dashboard warnings.
Benefits You Receive
- Reliable Start/Stop operation when the vehicle comes to a stop.
- Correct battery state of charge and no premature engine cutout.
- Accurate dashboard Start/Stop status messages.
- Warning-free dashboard and clear fault memory after programming.
- Factory-matched configuration across all affected control modules.
Why Choose LR Retrofit
- We use genuine JLR diagnostic hardware and factory-approved software.
- We maintain the complete JLR As-Built database for every supported model.
- We provide a written programming verification report.
- We support workshop appointments and remote programming for eligible vehicles.
Supported JLR Vehicles
We support Land Rover and Jaguar vehicles from 2010 onwards, including the Range Rover L405 and L460, Range Rover Sport L494 and L461, Discovery 5 L462, Defender L663, Discovery Sport L550, Range Rover Evoque L551, Range Rover Velar L560, Jaguar F-Pace X761, E-Pace X540, I-Pace X590, XE X760, XF X260 and F-Type X152. Petrol, diesel, mild hybrid and plug-in hybrid powertrains all use the same Start/Stop control structure. Our team corrects the parameters on every JLR engine variant.
What You Need Before Booking
- Your full 17-character VIN
- Current vehicle mileage
- Details of any recent battery replacement or ECU software updates
- Your preferred appointment date or remote session time
Book Your Start/Stop System Reprogramming
Contact LR Retrofit with your VIN for a same-day compatibility check. We confirm your vehicle’s current configuration and the exact Start/Stop parameters required. We offer workshop appointments and remote programming where available. Our team responds within one business hour.
