2002-2008 Acura TL Window Regulator: Decoding Generations and Common Failures

A Critical Distinction: 2nd Gen vs. 3rd Gen TL

Before diagnosing or buying a window regulator for an Acura TL, you must first identify your vehicle's generation. The parts are not interchangeable between generations.

• Second Generation (UA5): 2002-2003 model years. These regulators use part numbers starting with 722xx-S0K-xxx.
• Third Generation (UA6/UA7): 2004-2008 model years. These regulators use part numbers starting with 722xx-SEP-xxx.

Mixing these up is a common and costly mistake. This guide is organized to help you find the specific information for your generation.

Symptoms of a Failing Window Regulator

Window regulator failure is a very common issue on both generations of the Acura TL. The symptoms are usually obvious and help distinguish a bad regulator from a faulty switch or motor.

• Grinding, Crunching, or Popping Noises: This is the most classic sign. When you press the window switch, a loud grinding or tangled sound from inside the door indicates the regulator cable has likely snapped, frayed, or jumped off its pulleys.
• Window Drops Into the Door: The window may suddenly fall completely into the door cavity, either while driving or when you try to operate it. This happens when the cable or a critical plastic guide clip breaks, leaving nothing to hold the glass up.
• Slow, Jerky, or Stuttering Movement: If the window struggles to move, moves in a jerky motion, or is noticeably slower than it used to be, the cable may be binding or the motor is being strained by a failing regulator.
• Crooked or Off-Track Window: A broken regulator can cause the glass to tilt forward or backward in the door frame. This prevents a proper seal and may trigger the anti-pinch safety feature, causing the window to automatically go back down after you try to close it.
• Motor Clicks, But Window Doesn't Move: If you can hear the window motor whir or click when you press the switch but the glass stays put, the motor is likely receiving power, but the mechanical regulator is broken.

Buying a Used 2002-2008 Acura TL Window Regulator

A used OEM window regulator can be a reliable and cost-effective alternative to expensive new parts or lower-quality aftermarket units. Here’s what to look for to ensure you get a good part.

Step 1: Verify Your Generation and Part Number

This is the most important step. Confirm if you have a 2002-2003 (S0K) or 2004-2008 (SEP) model. Each of the four doors uses a unique, non-interchangeable regulator. Use the part number lists in this guide to match the exact part you need for the correct door (e.g., Front Driver Side).

Step 2: Physical Inspection Checklist

When inspecting a used regulator, check the following:

• Cables: The steel cables should be tight and free of any fraying, kinks, or rust. A loose or tangled cable is the primary failure point.
• Plastic Guides and Pulleys: Inspect all plastic components, especially the clips that hold the cable and the pulleys it runs on. Look for cracks, stress marks, or any signs of breakage. These parts become brittle with age.
• Mounting Points: Ensure all metal mounting tabs are straight and the bolt holes are intact. Bent tabs can make installation difficult and suggest the part was removed forcefully.
• Motor Included: Most used regulators are sold as an assembly with the motor attached. Confirm this is the case. Test the motor if possible by applying 12V power, but the mechanical condition of the regulator is more critical, as the motors are generally robust.

Why a Used OEM Regulator is Often a Smart Choice

Original Equipment Manufacturer (OEM) parts are designed by Acura for a perfect fit and function. While some aftermarket brands like Dorman or Aisin are reputable, they may sometimes lack features like the auto up/down function. A used OEM part from a low-mileage vehicle provides the same quality and fit as a new dealer part at a fraction of the cost, often outlasting cheap, new aftermarket alternatives.

Known Issues, TSBs, and Recalls

There are no specific recalls or Technical Service Bulletins (TSBs) from Acura or the NHTSA directly addressing window regulator failure for the 2002-2008 TL. However, the issue is widely documented by owners in forums as a common wear-and-tear item. The primary recalls for these vehicles concern issues like Takata airbags, power steering hoses, and automatic transmissions, not the window regulators.

Replacement Overview & Difficulty

Replacing the window regulator is a manageable DIY project for someone with basic mechanical skills. The process involves removing the interior door panel, carefully peeling back the vapor barrier, supporting the window glass, and then unbolting the regulator assembly.

• Difficulty Rating: 3 out of 5
• Estimated Time: 1.5 - 2.5 hours
• Tools Needed: Phillips screwdriver, 10mm socket and ratchet, trim removal tools, and strong tape (like duct tape) to hold the window glass in the 'up' position while you work.

Window Reset Procedure (Required After Replacement)

After replacing the regulator or disconnecting the battery, the driver's 'auto up/down' feature will be disabled. You must reset it.

1. Turn the ignition to the ON (II) position.
2. Lower the driver's window all the way down using the switch.
3. Pull the switch up to raise the window all the way to the top, and continue to hold the switch in the 'up' position for 2-3 seconds after it closes.
4. The auto up/down function should now be restored.

Cost Comparison: New vs. Used vs. Aftermarket

Part Number Reference

The following are known OEM part numbers. This list is for reference; always verify the part number and fitment for your specific vehicle and door position before purchasing.

2004-2008 Acura TL (3rd Gen)

2002-2003 Acura TL (2nd Gen)

Frequently Asked Questions (FAQ)