2023-2026 Genesis GV60 Lighting Module: Why Used Parts Won't Work & Diagnosing Real-World Faults

Symptoms of a Lighting Problem

When your GV60's lights start acting up, it's easy to suspect the Lighting Control Module. While the LCM can fail, it's important to know the common symptoms and, more importantly, to rule out more frequent issues first.

Common Failure Symptoms:

• One or More Lights Inoperative: A headlight, taillight, or turn signal completely stops working. Since the GV60 uses integrated LED units, this is rarely a 'burnt-out bulb'.
• Erratic Light Behavior: Lights may flicker, dim intermittently, or stay on when the vehicle is turned off.
• Dashboard Warning Lights: An LED Headlight Warning Light or a master warning icon may appear on your instrument cluster. However, a separate known recall can cause the entire cluster to go blank.
• Interior Lighting Malfunctions: The ambient mood lighting may not change color, fail to turn on, or get stuck on one setting.
• Multiple Lights Fail Simultaneously: If several unrelated light circuits fail at the same time, it points towards a central controller like the LCM.

Associated OBD-II Diagnostic Trouble Codes (DTCs)

A technician will use an OBD-II scanner to pull codes from the vehicle's computer. While generic codes exist, lighting issues are typically stored as Body (B-prefix) or Network (U-prefix) codes. Examples include:

• B-Series Codes: Indicating faults in body electronics like lighting circuits (e.g., B1XXX).
• U-Series Codes: Indicating a loss of communication between the LCM and other modules in the vehicle.

A scan tool is required to read these manufacturer-specific codes; a basic code reader may not see them.

Known Issues, Recalls & TSBs (2023-2026 Genesis GV60)

Your GV60's lighting problem is more likely related to one of these known issues than a random LCM failure. Check with a Genesis dealer to see if your vehicle's VIN is affected by these campaigns.

Recall 24V-868: Integrated Charging Control Unit (ICCU) Failure

This is the most significant and widespread electrical issue affecting the GV60. The ICCU is responsible for charging the 12-volt auxiliary battery from the main high-voltage battery. When it fails, the 12V battery dies, which can result in a sudden loss of drive power and cause all electronics, including lights, to shut down. Symptoms include the car being completely dead, key fob not working, and a "Check Electric Vehicle System" warning. A new ICCU and updated software are the required fix.

Recall 25V-474: Instrument Panel Display Failure

A software error can cause the entire digital instrument cluster to go blank while driving. This is a major safety issue because it hides the speedometer, warning lights, and gear selection status. The fix is a software update that can be performed over-the-air (OTA) or by a dealer.

Common Complaint: 12V Battery Drain

Even on vehicles without a failed ICCU, many owners report the 12V battery draining if the vehicle sits for several days. This can be caused by various modules checking for updates or staying active when parked. The result is a dead vehicle with no lights or response from the key fob, which can be mistaken for a major component failure.

Buying a Used Lighting Control Module: A Critical Warning

If you install a used LCM from a salvage vehicle, it will create a VIN mismatch. The module will not communicate correctly with the rest of the car's systems, and it will not function. This is a security and anti-theft measure built into the vehicle's architecture. You will waste both time and money on a part that is fundamentally incompatible.

The only correct procedure is to purchase a brand new, un-programmed module from a Genesis dealer and have them install and initialize it to your vehicle's VIN using their proprietary diagnostic software.

Programming & Installation

Replacing the Lighting Control Module in a Genesis GV60 is not a DIY-friendly job due to the software requirements.

• Programming Required: Yes, a new LCM must be programmed and coded to the vehicle.
• Dealer Visit Required: This programming can only be performed by a Genesis dealership using the official Genesis Diagnostic System (GDS) software. Standard independent shop tools or aftermarket scanners cannot perform this function.
• Anti-Theft Link: The LCM is part of the vehicle's integrated network. A VIN mismatch from an incorrect or improperly programmed module can trigger anti-theft protocols or cause widespread communication errors.

Cost to Replace a Lighting Control Module

Costs are estimates and will vary by location and the specific module required. The GV60 has multiple lighting-related modules; the primary interior module is often called the "Mood Lamp Unit."

Frequently Asked Questions (FAQ)