2013-2022 Range Rover L405 Headlight: Navigating Xenon, LED, and Adaptive Options

Key Compatibility Warnings: Read Before Buying

Choosing the correct headlight assembly for a 2013-2022 Range Rover L405 is complex due to multiple technology updates throughout its production. Installing the wrong type of headlight will result in function failure and fault codes. Always match the part number from your original headlight to the replacement part.

Headlight Technology Types (2013-2017)

• Bi-Xenon (HID): Used on earlier models, these headlights use a high-intensity discharge bulb (type D3S) that requires a ballast and igniter to operate. They were available in two main versions:
• Standard Xenon: Provides powerful, fixed forward illumination.
• Adaptive Xenon (AFS): The headlight beam swivels left and right with the steering wheel to better illuminate turns. A fault in this system will trigger a flashing warning light on the dashboard.
🎬 Watch: How to quickly diagnose an adaptive headlight warning light.

Headlight Technology Types (2018-2022 Facelift)

Starting in 2018, the Range Rover received a facelift and moved to all-LED lighting with several tiers:

• Premium LED: The new standard headlight, featuring 24 LEDs.
• Pixel LED: An upgraded option with 142 individually controllable LEDs that can shape the beam to avoid dazzling oncoming drivers.
• Pixel-Laser LED: The top-tier option, adding laser high beams for even greater range.

Upgrading from a 2013-2017 model to the 2018+ facelift style requires not only the headlights but also a new front bumper, grille, and other parts.

Model Year 2022 Specifics

Symptoms of a Failing Headlight Assembly

• Dim or Flickering Light: On Xenon models, this often points to a failing D3S bulb or, more commonly, a bad ballast. On LED models, it indicates a failing LED element or control module.
• Moisture or Condensation Inside Lens: This is a very common issue. While Land Rover sometimes considers minor fogging normal, persistent moisture, water droplets, or puddles indicate a failed seal, a crack in the housing, or a blocked vent cap. This moisture will eventually corrode and destroy the electronic modules located at the bottom of the headlight.
• 'Adaptive Headlight Fault' Warning: A flashing headlight icon on the instrument cluster indicates a problem with the AFS system. This could be a failed swivel motor inside the assembly, a bad sensor on the vehicle's suspension, or a software issue.
• Headlight Completely Inoperative: Could be a bulb, ballast/module, fuse, or wiring issue. A missing rear cover cap often leads to water damage and complete failure.
• Yellowed or Hazy Lens: UV damage and oxidation can degrade the polycarbonate lens, reducing light output and creating a poor appearance.
• LED Daytime Running Lights (DRL) Failure: If a section or the entire DRL strip fails, the entire headlight assembly typically needs to be replaced as the LEDs are not serviced separately.

Known Issues, TSBs, and Recalls

• Condensation/Moisture Ingress: The most prevalent complaint. Forum users and even some dealer documents acknowledge that condensation is common. It's often caused by failing seals between the lens and housing or blocked vent caps. If left unaddressed, the water will damage the expensive control modules.
• Recall N556 (FMVSS 108): Issued for some 2018-2020 models, this recall addressed a software issue where the Auto High Beam (AHB) system did not display the high beam indicator on the dash when active. The fix was a software update.
• Adaptive Headlight Malfunctions: Failures of the AFS system are frequently reported, often triggering a dashboard warning. Causes range from internal motor failure to problems with the vehicle's ride height sensors that provide position data to the lights.

Buying a Used Headlight Assembly: What to Inspect

Given the high cost of new OEM units, a quality used headlight is an excellent value. However, careful inspection is critical to avoid buying a faulty part.

1. Confirm the Part Number: This is the most important step. Locate the sticker on the top or back of the headlight housing and match the part number (e.g., CK52-13W029-FD) exactly to your old unit.
2. Inspect for Moisture Damage: Look for any signs of a past water leak, such as a dried water line, mineral deposits, or corrosion on any visible electronics or connectors. A headlight with a history of water inside is a major red flag.
3. Check All Mounting Tabs: The plastic mounting tabs are brittle and often break in minor impacts or during removal. Inspect every tab for cracks or signs of repair (e.g., epoxy or plastic welding). A broken tab can cause the headlight to vibrate or be misaligned.
4. Examine the Lens Condition: Look for deep scratches, rock chips, and stress cracks. Check for hazing or yellowing from UV damage. While minor hazing can be polished, heavy damage may require professional restoration.
5. Inspect the Rear Housing: Check the black plastic housing for any cracks or holes, which can be a source of water entry. Ensure all rear caps and covers for the bulb access ports are present and seal tightly.
6. Verify Included Components: A complete assembly should include the Xenon bulb, ballast, and any adaptive or LED control modules. These are often located on the bottom or back of the housing. Many used parts are sold as bare housings. Confirm with the seller exactly what is included. A bare housing will require you to transfer all of your old components, which may not be possible if they are damaged.

Cost of Replacement

The cost for a single headlight assembly can vary dramatically based on the technology and source.

Headlight Replacement Overview

• Difficulty: 4 out of 5
• Estimated Time: 2.5 - 4 hours
• Procedure: The general process involves removing the front grille, undoing numerous screws and clips in both wheel wells, removing fasteners under the bumper, and carefully pulling the bumper cover off. Once the bumper is off, the headlight is held by several bolts.
• Aiming and Calibration: After installation, the headlights must be aimed correctly to ensure proper visibility and avoid glaring other drivers. This is done using adjustment screws on the back of the assembly. For vehicles with adaptive headlights (AFS), a diagnostic tool may be needed to perform a calibration or reset of the lighting control module to ensure the swivel function works correctly.

Frequently Asked Questions (FAQ)