Configurable Ambient Interior Lighting

Product SKU: LR-CAIL-01 | OEM Part Numbers: LR234567 (RGB LED light guide assembly), LR234568 (door control module with LIN interface)

Retrofit genuine configurable ambient interior lighting to your Jaguar or Land Rover and transform the cabin atmosphere with 30+ colours. The factory RGB LED system integrates with the vehicle’s infotainment screen, allowing you to adjust colour, brightness, and zone settings. This genuine JLR upgrade communicates via CAN bus and LIN, delivering the same premium lighting experience as factory‑equipped models.

System Overview

The configurable ambient interior lighting system replaces the standard single‑colour footwell and door pocket illumination with an advanced RGB LED solution. Each light guide contains a multicolour LED module that mixes red, green, and blue channels to produce a wide range of hues. A dedicated door control module (DCM) on each door manages the LED output and communicates with the central lighting controller via the LIN bus. The infotainment screen provides the user interface, showing a colour palette and brightness slider. The system remembers the last selected colour and brightness for each ignition cycle.

For vehicles that left the factory with basic fixed‑colour ambient lighting, LR Retrofit supplies a complete conversion kit. Every component meets OEM specifications, guaranteeing the same performance and reliability as a factory‑fitted configurable lighting system.

Kit Contents

• Four RGB LED light guide assemblies — one for each door (front left, front right, rear left, rear right). Each assembly includes a moulded light pipe, a 3‑channel RGB LED module, and a lens. The light guide clips into the existing door trim pocket location and uses the same aperture as the factory ambient light.
• Four door control modules (DCM) with LIN interface — one per door. Each module receives colour commands from the central lighting controller and drives the RGB LED with pulse‑width modulation (PWM) for smooth dimming. The module also monitors LED current and reports faults via the CAN bus.
• Vehicle-specific wiring harness — pre‑terminated loom with OEM‑grade connectors. The harness connects each DCM to the door wiring harness, the central lighting controller, and the CAN bus. It includes weather‑sealed inline connectors and protective conduit.
• Central lighting controller (CLC) upgrade module — a plug‑in module that adds the RGB ambient lighting channel to the existing CAN bus network. The CLC communicates with the infotainment head unit and stores the colour calibration data.
• Software activation licence — enables the ambient lighting configuration menu in the infotainment system. The activation also unlocks the colour picker, brightness slider, and zone synchronisation options.
• Installation guide — step‑by‑step instructions for door trim removal, light guide replacement, wiring integration, and software configuration.

Installation Overview

The installation follows a per‑door approach. The technician begins with the front left door, removes the inner trim panel, and disconnects the existing ambient light connector. The new RGB LED light guide clips into the same pocket location. The technician routes the new DCM wiring harness from the LED module, through the door grommet, to the body‑side CAN bus and the central lighting controller location. The DCM mounts in the door cavity using the factory bracket. The technician repeats the process for each door. After the physical installation, the technician connects the diagnostic tool, updates the CCF to enable the configurable ambient lighting feature, and loads the colour calibration data into the CLC. The system then undergoes a functional test: the technician selects each colour from the infotainment screen and confirms the LED output matches the requested hue and brightness across all zones. The entire installation takes approximately five to seven hours for a trained technician.

Technical Specifications

Functional Highlights

• Full colour customisation — the driver selects any colour from the infotainment palette. The system stores the last colour for each key profile, so each driver retains their preferred cabin atmosphere.
• Zone synchronisation — the central lighting controller allows the driver to set all four doors to the same colour or to different colours per zone. The system also supports a “mood” mode that slowly transitions through a preset colour loop.
• Brightness memory — the DCMs record the brightness level for each lighting zone and restore it after every ignition cycle. The driver can also disable ambient lighting entirely via the infotainment screen.
• Fault detection — each DCM monitors the LED current and reports open‑circuit or short‑circuit faults via the CAN bus. The technician can read live data and fault codes using any JLR‑compatible diagnostic tool.

Calibration and Validation

After installing all four doors, the technician performs a colour calibration using the diagnostic tool. The calibration ensures that each RGB LED module produces the same colour output for a given digital value, compensating for manufacturing tolerances. The technician then carries out a full functional test: cycling through all 30+ colours, verifying the brightness slider operates smoothly across all zones, and confirming the colour synchronisation mode works correctly. The technician also checks the system with the vehicle’s ignition on/off states to ensure the ambient lighting turns on and off as expected (on with ignition, off with timeout or door open).

Ordering Information

Each kit ships with four RGB LED light guide assemblies, four door control modules, the vehicle‑specific wiring harness, the central lighting controller upgrade module, the software activation licence, and the installation guide. The kit covers all Jaguar Land Rover models listed in the compatibility table above. For model years or variants not listed, please contact LR Retrofit with your VIN for a compatibility assessment.

The kit includes a 24‑month warranty against manufacturing defects. LR Retrofit provides full technical support for installation and calibration, including remote programming assistance where required.