2010-2012 Jaguar XF Daytime Running Light Module: Failures, Part Numbers, and Programming

A Critical Distinction: 2010-2011 vs. 2012 Models

Before diagnosing any issue, it's essential to identify which Jaguar XF model you have, as the DRL systems are completely different within this year range.

• 2010-2011 (Pre-Facelift): These models typically have Daytime Running Lights located in the lower front bumper grilles, separate from the main headlight housing. These are often incandescent bulbs or aftermarket LED assemblies. Problems here are more likely to be related to the bulb, wiring, or a simpler, non-integrated control module.
• 2012 (Post-Facelift): This model year introduced the signature "J-Blade" LED Daytime Running Lights, which are integrated directly into the headlight assembly. These are controlled by a more sophisticated electronic module that communicates with the vehicle's central computer network. The OEM part numbers C2Z14607 and C2Z14608 apply to this system.

This guide primarily focuses on the 2012 facelift model and its specific DRL control module, as it is the more complex and common source of issues requiring advanced repair knowledge.

Symptoms of a Failing DRL Module

When the DRL module begins to fail, you may notice one or more of the following symptoms:

• One or Both DRLs Are Out: The most common symptom is a DRL on one side (or both) not illuminating at all when the car is in drive.
• Flickering or Dim Lights: The DRL may flicker, flash intermittently, or appear noticeably dimmer than the other side. This can indicate the module is failing to provide stable voltage.
• DRLs Stay On: A faulty module can fail in the 'on' position, leaving the DRLs illuminated even when the car is turned off and locked. This will eventually drain the battery.
• Burning Smell: In rare cases, an internal short in the module or its wiring can cause overheating, producing a distinct burning plastic or electrical smell from the front of the vehicle.
• Dashboard Warning Light: Some failures may trigger a general lighting fault warning on the instrument cluster.
• Diagnostic Trouble Codes (DTCs): A professional scan may reveal specific fault codes. A known code related to this system is B103D-87, indicating a "missing message" from the headlamp control, often due to a wiring or module fault.

Diagnosing the Issue: Module, Wiring, or Headlight?

Because a replacement headlight assembly can cost thousands of dollars, it's crucial to properly diagnose the fault before replacing parts. The issue could be the module, the wiring, or the LED element within the sealed headlight unit itself.

1. Check Fuses First: Consult your owner's manual and check all fuses related to exterior lighting and the Body Control Module (BCM). A blown fuse is a simple fix that is often overlooked.
2. Inspect Wiring and Connectors: The wiring harness leading to the headlight assembly can become brittle from heat cycles. Check for visible signs of corrosion, damage, or loose pins at the main headlight connector and at the module itself. Water intrusion can also cause shorts. One common failure point is a poor ground connection, which is often located under the air filter housing on these cars.
3. Swap Components (Advanced): If you have access and are comfortable doing so, you can swap the DRL modules between the left and right headlights. If the problem moves to the other side, you have confirmed the module is the faulty component. If the problem stays on the same side, the issue is likely with the wiring or the internal LED of that headlight assembly.
🎬 See how to repair a Jaguar XF headlight assembly
4. Professional Scan: A generic OBD-II scanner will not read the necessary codes. The DRLs are controlled by the Body Control Module (BCM), which stores manufacturer-specific codes (B-codes, C-codes, U-codes). A Jaguar dealer or an independent specialist with JLR-specific diagnostic tools like SDD or Pathfinder is required to accurately read these codes and pinpoint the fault.
🎬 Watch module configuration using JLR SDD software

Programming and Installation Requirements

This is the single most important consideration for this part. A new or used DRL module must be electronically configured to the car after installation. This process is often called programming, flashing, or variant coding.

• Why is programming needed? The module is part of a complex network of computers in your car. The Body Control Module (BCM) needs to recognize the new module and authorize it to function. Without this step, the new module will likely not work at all.
• Who can program the module? This is not a DIY task. It requires specialized, dealer-level diagnostic software like Jaguar Land Rover (JLR) Symptom Driven Diagnostics (SDD) or Pathfinder. This means you will need to have the work performed by a Jaguar dealership or a qualified independent European auto repair shop that has invested in this specific equipment.
• What is the process? A technician connects the diagnostic tool to the vehicle's OBD-II port and runs a routine to configure the new module. This tells the car's central computer about the new part and enables its functions according to your car's factory build sheet.

Buying a Used 2012 Jaguar XF DRL Module

A used OEM module is an excellent way to save a significant amount of money, but you must buy smart. Given the programming requirement, the purchase price of the part is only one part of the total repair cost.

• Verify the Part Number: Before ordering, you must verify that the part number on your existing module matches the one you are buying. The two known OEM part numbers are C2Z14607 and C2Z14608. There may be other variants, so a visual match is critical.
• Inspect for Damage: When you receive the used part, inspect the housing for cracks and check the connector pins to ensure they are straight and free of corrosion. Do not accept a part with signs of water damage.
• Factor in Programming Costs: Remember to budget for 1-2 hours of labor at a specialist shop or dealer for programming. Call ahead to get a quote so you know the full cost of the repair.
• Why Used OEM is a Good Choice: For a complex electronic part like this, a used original Jaguar part is often more reliable than a new, unbranded aftermarket part. The OEM module is designed to communicate perfectly with your car's systems, whereas a cheap copy may fail to program or cause other electrical issues.

Cost Comparison

Known Recalls and Service Bulletins

As of mid-2026, there are no specific recalls from the NHTSA for the DRL module on the 2010-2012 Jaguar XF. However, there was a non-compliance recall for 2012-2015 Jaguar XK models (NHTSA 15V-038) where a software error related to the introduction of DRLs caused the parking lights to extinguish after five minutes. The fix was a software update to the Central Junction Box. This highlights how critical correct software is for the lighting systems on these vehicles.

The 2010-2012 XF was subject to unrelated recalls for potential fuel leaks (NHTSA recalls J017 and J027).

Frequently Asked Questions (FAQ)