Common Underglow Light Issues: Maintenance & Upgrade Tips｜BLIAUTO Professional Custom Lighting & Maintenance Guide

In the pursuit of both personalization and safety, underglow lights have become a favorite upgrade among many car enthusiasts. Not only do they enhance a vehicle’s visual appeal at night, but they also improve side visibility and ground illumination in specific environments. However, due to their low mounting position, underglow lights are particularly vulnerable to external conditions, often leading to a range of faults or operational issues.

This article provides a comprehensive overview of common underglow light problems, troubleshooting techniques, practical upgrade advice, and maintenance tips to help you keep your lights shining bright and trouble-free!

I. Common Underglow Light Issues & Cause Analysis

1. Lights not turning on or flickering intermittently

Possible Causes:

Loose power connections or water ingress

Aged or burned-out internal components

Controller failure or remote malfunction

Solutions:

Check the power wiring and ensure proper polarity connection

Seal connectors with waterproof tape to prevent moisture intrusion

Replace the controller or test with the app to check responsiveness

2. Color distortion or incorrect lighting

Possible Causes:

Controller signal failure

RGB LED malfunction or miscoloring

Unstable voltage due to poor ground connection

Solutions:

Re-pair the remote controller and verify correct wiring

Replace damaged RGB LED modules

Add a dedicated ground wire for stable voltage

3. Flickering or dim lighting after startup

Possible Causes:

Low voltage or unstable power from the car battery

Excessive voltage drop due to long power cables

Dirt or mud buildup on the light surface

Solutions:

Use a regulated power supply or transformer

Shorten the power cables or use high-conductivity copper wires

Clean the light surface regularly to maintain brightness

4. Light strips falling off or not sticking

Possible Causes:

Weak adhesive or unclean mounting surfaces

High heat or moisture under the chassis affecting adhesion

Solutions:

Use automotive-grade adhesive, foam double-sided tape, or zip ties

Thoroughly clean and degrease the mounting area before installation

Use aluminum light strip brackets to reinforce attachment

II. Underglow Light Maintenance & Daily Care Tips

Check wiring regularly:

Inspect all connectors and wires at least once a month, especially after driving in wet or off-road conditions.

Avoid high-pressure washing:

Do not aim pressure washers directly at the strips or wiring during car washes to prevent water from reaching the control box.

Seal critical areas:

Use heat-shrink tubing, waterproof sealants, or sealed boxes on control units and connectors to enhance water resistance.

Keep lights clean:

Accumulated mud or grease can reduce brightness and shorten lifespan. Wipe the surface clean with a damp cloth.

Power off during extreme conditions:

Disconnect the underglow lights if the vehicle will be idle for long periods or exposed to extremely cold temperatures to prolong service life.

III. Practical Tips for Choosing Underglow Lights

When selecting underglow light kits, keep the following in mind:

Ensure waterproof rating of at least IP65

Confirm the light supports multiple color modes and remote/app control

Choose products with copper core wires and dual-layer waterproof design

Prefer trusted brands that offer after-sales support and installation guides

Final Words ｜ BLIAUTO Professional Lighting Reminder

Underglow lights not only boost your vehicle's aesthetics but also enhance side visibility and safety during night driving or parking. Only through proper installation, scientific use, and timely maintenance can you unlock their full potential.

BLIAUTO is committed to providing you with high-quality automotive lighting products and professional technical support. If you encounter any issues during use, feel free to leave a comment or contact our support team—we’re here to offer you tailored solutions.