2007-2012 Acura RDX Rear Window Regulator: Noises, Failure Signs & Replacement
This guide covers the common failure symptoms of the first-generation Acura RDX rear window regulator and what to inspect when purchasing a used replacement.
- The most common sign of failure is a grinding or clicking noise from inside the door when operating the window.
- Failure is almost always the regulator's cable or plastic guides, not the electric motor itself.
- When buying a used part, inspect the cables for fraying and the plastic components for cracks.
- Be prepared for the door panel clips to break during removal; having spares on hand is a good idea.
Symptoms of a Failing Rear Window Regulator
A failing window regulator on a 2007-2012 Acura RDX will usually give you a few warning signs. Being able to recognize them can help you diagnose the problem before the window fails completely, which often happens at the most inconvenient time.
- Grinding, Clicking, or Popping Noises: This is the most common symptom. When you operate the window, you may hear grinding or clicking sounds coming from inside the door panel. These noises are often caused by a frayed or tangled regulator cable, or broken plastic pieces in the mechanism.
- Window Moves Slowly or Unevenly: If the window struggles to go up or down, or if it appears crooked in its track, the regulator is likely failing. This can be caused by increased resistance from a damaged cable or a guide piece that has broken off.
- Window Drops Inside the Door: In cases of complete failure, the window glass may suddenly drop all the way into the door. This happens when the cable snaps or the brackets holding the glass break entirely.
- Motor Runs but Window Doesn't Move: If you can hear the window motor whirring when you press the switch, but the glass doesn't move, it's a clear sign that the motor is working but the regulator mechanism is broken.
Known Issues, Recalls, and TSBs
My research did not find any recalls or Technical Service Bulletins (TSBs) from Acura or the NHTSA that are specific to the rear window regulators on the 2007-2012 Acura RDX. Forum discussions among owners indicate that window regulator failure is a known, though not universal, problem for this vehicle generation. The failures appear to be related to normal wear and tear of the cable and plastic components over time.
It is important to distinguish this from a widely-known TSB (22-014) for newer 2019-2020 RDX models, where the rear windshield glass can shatter due to an issue with the defroster grid. This issue does not apply to the 2007-2012 model year.
Pro Tip: Before assuming the regulator is bad, check the simple things first. If a window isn't working at all, check the fuse and the child lock-out button on the driver's master switch. If only one window is acting up and you hear the motor, the regulator is almost certainly the culprit.
Buying a Used 2007-2012 RDX Rear Window Regulator
Purchasing a used OEM window regulator assembly is often a smart choice, providing the original factory quality at a significant discount compared to a new part from the dealer. Here’s what to look for to ensure you get a good part.
Inspection Checklist:
- Verify Part Numbers: The original part numbers for the rear right regulator are 72710-STK-A01, which was later superseded by 72710-STK-A02. Ensure the part you are buying is one of these. The left and right side regulators are not interchangeable.
- Inspect the Cables: Look closely at the cables. They should be tightly wound on the pulleys and free of any fraying, kinks, or rust. A tangled or frayed cable is the most common point of failure.
- Check Plastic Components: Examine all visible plastic guides, clips, and pulley wheels. Look for cracks, stress marks, or any signs of breakage. These plastic parts become brittle with age and are often the first to fail.
- Confirm Motor is Included: The regulator is sold as a complete assembly with the motor attached. Confirm the motor is present and that its electrical connector is intact with no bent or corroded pins.
Replacement Overview & Difficulty
Replacing the rear window regulator on a first-generation RDX is a manageable DIY project for someone with basic mechanical skills. The process primarily involves removing the interior door panel to access the regulator assembly.
- Difficulty: 3 out of 5
- Estimated Time: 1.5 - 2 hours
- Tools Needed: Phillips screwdriver, flathead screwdriver, plastic trim removal tools, 10mm socket and ratchet.
Warning: The plastic clips that hold the door panel in place are notoriously brittle and can break easily during removal. It is highly recommended to have a few replacement clips on hand before you begin the job. Using plastic trim removal tools instead of a screwdriver will help minimize the risk of breaking clips or scratching the panel.
Basic Replacement Steps:
- Remove the screws securing the interior door panel. These are typically located behind a small cover in the door handle and in the door pull recess.
- Use a trim tool to carefully pry the door panel away from the door frame, releasing the plastic clips.
- Disconnect the electrical connectors for the window switch and the cables for the door handle and lock.
- Carefully peel back the plastic vapor barrier to gain access to the inside of the door.
- Temporarily reconnect the window switch and lower the window until you can see the bolts that attach the glass to the regulator through the access holes.
- Support the window glass (painter's tape is great for holding it up) and unbolt it from the regulator.
- Disconnect the window motor's electrical connector.
- Unbolt the regulator assembly (typically held by several 10mm bolts) from the door and carefully remove it through the large access hole.
- Installation is the reverse of removal.
Cost Comparison
| Part Type | Estimated Cost |
|---|---|
| New OEM | $305 - $435 |
| New Aftermarket | $60 - $120 |
| Used OEM | $50 - $150 |
| Shop Labor | $120 - $200 |
Frequently Asked Questions (FAQ)
Do I need to replace the motor and regulator together?
Yes, it is highly recommended. The part is sold as a complete assembly including the motor. Since the labor to access the part is the same, and failure of one component can stress the other, replacing the entire unit is the most reliable repair.
Is the rear driver's side regulator the same as the passenger's side?
No, the left (driver) and right (passenger) side window regulators are mirror images of each other and are not interchangeable. You must purchase the correct part for the specific door you are repairing.
Can I just replace the broken cable or plastic clip?
While some universal cable repair kits exist, they are not recommended. These repairs are difficult, unreliable, and often fail again quickly. Replacing the complete used OEM or new aftermarket assembly is a much more durable and time-effective solution.
Does the replacement window regulator need to be programmed?
No. For the 2007-2012 Acura RDX, the window regulators do not require any special programming or reset procedure after installation. They are a simple plug-and-play component.
Technical Specifications
OEM Part Numbers: 72710-STK-A01 72710-STK-A02
Fits 2007-2012 Acura RDX rear doors. Sold as a complete assembly with motor. Left and Right sides are different.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Acura RDX: