A Guide to the 2002-2004 INFINITI I35 Window Motor
If your INFINITI I35 window is stuck, slow, or noisy, this guide will help you understand the problem and find the right replacement motor.
- Failure is common and symptoms include slow operation, noise, or a completely stuck window.
- Always check fuses and switches first to avoid a misdiagnosis.
- Replacing the motor and regulator assembly together is often the best long-term repair.
- This is a DIY-friendly job that can save you over $150 in labor costs.
Is Your I35 Window Motor Failing?
A failing window motor in your INFINITI I35 can be frustrating. Usually, the failure isn't sudden. You might notice the window moving slower than usual or making strange noises before it stops working completely. It's important to distinguish between a bad motor and a bad regulator, as they often have similar symptoms. A humming or clicking sound from inside the door when you press the switch often points to a motor that's receiving power but can't move the window.
Common Symptoms of a Bad Window Motor:
- Slow or Sluggish Operation: The window struggles to go up or down.
- Intermittent Function: The window works sometimes but not others.
- No Movement at All: The window is completely stuck, but you might hear a faint click or hum from the door when pressing the switch.
- Grinding or Whirring Noises: Unusual sounds from inside the door panel during operation suggest the motor's internal gears are worn or failing.
- Window Drops Down: In some cases, a failed motor and regulator assembly can cause the window to drop down inside the door and not come back up.
Check Fuses and Switches First
Before blaming the motor, check the simple things. A blown fuse can disable a window. Also, test the window using both the driver's master switch and the switch on the affected door. If one switch works and the other doesn't, the problem is likely the switch, not the motor. Don't forget to check that the child safety lock isn't engaged for the rear windows.
Choosing the Right Aftermarket Window Motor
For the 2002-2004 INFINITI I35, the window motor is often sold as a standalone part, but it is also commonly available as an assembly with the window regulator. Since both parts work together and require removing the door panel to access, it's often a good idea to replace them as a complete assembly, especially on an older vehicle. Aftermarket parts offer significant savings compared to OEM parts and are widely available.
Aftermarket Brand Tiers
- Dorman: A well-known aftermarket brand that often re-engineers parts to improve on original weaknesses. They offer a wide selection of window motors and motor/regulator assemblies for the I35 and are a popular choice for DIY repairs.
- Cardone: Another major player in the aftermarket, Cardone offers both new and remanufactured window motors. They focus on correcting original design flaws and provide a cost-effective alternative to OEM parts.
- Skyward/Other Brands: Many other brands like TYC, ACI, and various private labels are available. These can offer good value, but quality can be less consistent than with more established brands like Dorman or Cardone.
Pro Tip: Motor vs. Motor & Regulator Assembly
The window regulator is the track and cable system that the motor drives. The plastic parts and cables on the regulator can also break. If you hear grinding or popping noises, or if the window is off-track, the regulator is likely bad. Given the labor involved, replacing the entire motor and regulator assembly at the same time can prevent you from having to do the job twice.
Replacement Cost
The cost to replace a window motor in your I35 can vary. The part itself is affordable, but labor at a repair shop will add to the total cost. Doing the replacement yourself is a very achievable DIY project that can save you a significant amount of money.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Window Motor | $47 - $153 |
| New OEM Window Motor Assembly | $222 - $327 |
| Shop Labor | $146 - $215 |
| Total Professional Replacement | $473 - $542 |
Frequently Asked Questions (FAQ)
Are there any recalls for the 2002-2004 I35 window motor?
No, there are no specific recalls for the window motor on the 2002-2004 INFINITI I35. There were recalls related to Takata airbags for this vehicle, but none address the window motors or regulators.
Is the window motor the same for all doors?
No. The motors are specific to their location in the vehicle (e.g., Front Driver Side, Rear Passenger Side). You must order the correct motor for the specific window you are repairing. They are not interchangeable.
Can I replace just the motor myself?
Yes, this is a common DIY repair. The process involves removing the interior door panel, peeling back the weather barrier, unbolting the old motor from the regulator, and installing the new one. It typically requires basic hand tools like a 10mm socket and screwdrivers. Be sure to tape the window glass in the 'up' position before removing the motor or regulator to prevent it from falling.
Do I need to reset the window motor after installation?
Some INFINITI models require a reset procedure for the auto-up/down feature to work correctly after the battery is disconnected or the motor is replaced. While this is more common on the G35, if your I35's auto-up feature doesn't work after replacement, you may need to perform a reset. This usually involves holding the window switch up or down for a few seconds after the window is fully closed or open.
Technical Specifications
OEM Part Numbers: 80731-2Y901 80731-2Y900 80730-2Y001 80730-2Y000 80731-89909 80730-89909
The window motor for the 2002-2004 INFINITI I35 is a 12-volt DC motor. It is location-specific (Front Left, Front Right, Rear Left, Rear Right) and may be sold as a standalone motor or as part of a complete window regulator assembly.
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.
- INFINITI I35: