2013-2016 Chevrolet Trax Fog Light Assembly: Moisture, Cracks, and Replacement Guide

Symptoms of a Failing Fog Light Assembly

Problems with the fog light assembly on a 2013-2016 Chevy Trax can range from simple bulb issues to complete assembly failure. Here are the most common signs to watch for:

• Fog Light Does Not Turn On: This is the most obvious symptom. If one light is out, the bulb is the likely culprit. If both are out, the problem could be the fuse, relay, switch, or a wiring issue.
• Dim or Flickering Light: An inconsistent light output often points to a poor electrical connection, a failing bulb, or corrosion in the connector pins. This can happen intermittently, especially when driving over bumps.
• Visible Moisture or Condensation Inside the Lens: Finding water droplets or a persistent fog inside the lens means the factory seal between the lens and the housing has failed. This moisture will corrode the reflector and electrical contacts, leading to eventual bulb and assembly failure.
• Cracked or Damaged Lens/Housing: The low mounting position makes fog lights vulnerable to impacts from road debris. A cracked lens or housing compromises the seal, allowing water and dirt to enter and damage the internal components.
• Blown Fuses: If the fog light fuse blows repeatedly, it indicates a short circuit in the wiring or within one of the assemblies. This can happen if a wire's insulation is damaged and touching the vehicle's frame.

Known Issues, Recalls, and Technical Service Bulletins (TSBs)

While there are no specific recalls from the National Highway Traffic Safety Administration (NHTSA) for the fog light assemblies on the 2013-2016 Chevrolet Trax, there are relevant service bulletins and general vehicle recalls for this generation.

Technical Service Bulletin on Lamp Condensation (01-08-42-001O)

General Motors issued a bulletin explaining that a small amount of fine mist or fog (condensation) on the inside of exterior lamps can be normal. These assemblies are vented to allow moisture to escape. According to GM, this condition is normal if:

• The condensation is a fine mist, not large water droplets or puddles.
• It covers less than half of the lens surface.
• It clears up after driving with the lights on or parking in a dry area.

If you see large drops of water, water pooling at the bottom of the housing, or if the condensation never clears, the assembly's seal has failed and it needs to be replaced.

Vehicle-Specific Recalls (Not Fog Light Related)

Owners of the 2013-2016 Trax should be aware of other significant recalls for their vehicle, including:

• NHTSA Recall 19V652000: Improperly welded front lower control arms that could break.
• NHTSA Recall 16V651000: An issue with the airbag sensing and diagnostic module (SDM) software that could prevent frontal airbags from deploying in a crash.
• GM Recall 17130: A radio software problem that could cause the key reminder chime to fail.

Buying a Used Fog Light Assembly: What to Inspect

A used OEM fog light assembly is often a better choice than a cheap aftermarket alternative due to superior materials, better seals, and a guaranteed fit. Here’s what to look for when buying a used one:

1. Check All Mounting Tabs: This is the most critical inspection point. Carefully examine every plastic tab on the housing. They are brittle and often break during accidents or improper removal. A single broken tab can prevent the assembly from being mounted securely, causing it to vibrate or fall out.
2. Inspect the Lens for Damage: Look for cracks, deep rock chips, and severe hazing or yellowing from UV damage. Minor surface scratches can be polished, but cracks cannot be repaired and will allow moisture to enter.
3. Examine the Lens-to-Housing Seal: Look closely at the seam where the clear lens is bonded to the black plastic housing. There should be no gaps, separation, or signs of the old sealant crumbling. A compromised seal is the primary cause of water leaks.
4. Verify Housing Integrity: Check the black plastic housing for any cracks or holes, especially around the mounting points and the bulb access port on the back.
5. Check the Wiring and Connector: Ensure the electrical connector is intact, with no broken plastic or corroded metal pins. The short wire pigtail leading to it should be flexible and not brittle.

Replacement Overview & Aiming

Replacing the fog light assembly is a feasible DIY job for most home mechanics.

Replacement Steps

Access to the fog light is typically gained through the front portion of the wheel well liner or from underneath the bumper.

1. Turn the front wheels to one side for better access to the wheel well.
2. Remove the screws or plastic clips holding the front of the wheel well liner in place and peel it back.
3. Reach inside the bumper to access the back of the fog light assembly.
4. Disconnect the electrical connector by pressing the release tab.
5. Remove the screws (usually Torx or 7mm/8mm hex) holding the assembly to the bumper.
6. Install the new assembly, reconnect the electrical plug, and test the light before re-securing the wheel liner.

Fog Light Aiming

After installation, you must aim the new fog light. Improperly aimed fog lights can blind oncoming drivers. The general procedure is as follows:

1. Park the vehicle on a level surface, 25 feet away from a flat wall.
2. Turn on the fog lights (your low-beam headlights should also be on).
3. The top of the fog light beam's cutoff should be at least 4 inches below the center of the fog lamp itself.
4. Use a Phillips or Torx screwdriver to turn the adjustment screw on the back of the fog light assembly to raise or lower the beam until it is aimed correctly.

Cost Breakdown

Prices for a 2013-2016 Chevrolet Trax fog light assembly can vary significantly based on the source.

Frequently Asked Questions (FAQ)