Toyota 4Runner Window Motor Replacement Guide (1984-1991)
Is your first-generation 4Runner's window slow, stuck, or making noise? This guide will help you choose the right replacement motor.
- A clicking noise usually confirms the motor is the problem and not the switch.
- Before replacement, clean and lubricate the window tracks as a first step.
- Replacing the motor is a DIY-friendly job that takes about 1-2 hours.
- Dorman and Cardone are reliable aftermarket choices for this model year.
Is Your Window Motor Failing?
A failing window motor in your 1984-1991 Toyota 4Runner can be frustrating. Before you assume the motor is bad, check a few simple things. First, make sure the window lock button isn't pressed. Second, listen for noises. If you hear a clicking or grinding sound when you press the switch, the motor is getting power but is likely broken internally. If you hear nothing at all, the problem could be a bad switch, fuse, or relay.
🎬 See how to repair a 1st Gen power window switchSymptoms of a Bad Window Motor
- Slow Operation: The window moves up and down much slower than it used to. This can also be caused by dirty or dry window tracks.
- Window Gets Stuck: The glass stops moving partway up or down.
- Clicking or Grinding Noise: You hear noises from inside the door when using the switch, but the window doesn't move. This often points to a stripped gear inside the motor.
- Total Failure: The window does not move at all, and you've already confirmed the switch and fuse are good.
Choosing an Aftermarket Window Motor
For a classic vehicle like the first-generation 4Runner, original equipment (OEM) parts from Toyota are likely discontinued or very expensive. Aftermarket parts are the most practical and affordable choice. Here’s a look at the brands available.
| Brand Tier | Brands | Quality & Price Assessment |
|---|---|---|
| Standard Aftermarket | Cardone, Dorman | Both Dorman and Cardone are well-known aftermarket brands that offer a balance of affordability and reliability. They are a common choice for DIY repairs and are designed to fit and function like the original part. For a vehicle of this age, they provide good value and often come with a warranty. |
| Value Tier | Surtrak Axle | Surtrak is primarily known for drivetrain parts, not electronics. While they offer a window motor and regulator assembly, there is very little information about its quality or long-term durability. It is likely a rebranded part and represents a budget option with unknown performance. |
Frequently Asked Questions
Is replacing a window motor a DIY job?
Yes, for most people with basic tools, this is a very manageable DIY project. The process involves removing the door panel, peeling back the plastic water shield, and unbolting the motor. There are many online videos showing the general steps. 🎬 Watch this step-by-step guide to replacing your window motor You will need common tools like a screwdriver set, a 10mm socket, and a T25 Torx bit to separate the motor from the regulator.
Do I need to replace the window regulator too?
Not always. The motor can be purchased separately and is often the only part that fails. The motor is typically attached to the regulator with three screws. However, if your window was moving unevenly or making loud popping noises, the regulator itself might be bent or damaged. For convenience, many parts are sold as a complete motor and regulator assembly.
Are there any recalls on the 1984-1991 4Runner window motor?
No. While Toyota has issued recalls for power window *switches* on much newer vehicles due to fire risk, there are no active recalls or technical service bulletins (TSBs) for the window *motors* on the first-generation 4Runner.
What is a common mistake when ordering this part?
The most common mistake is ordering the wrong side. The motors for the driver's side (Left) and passenger's side (Right) are different and not interchangeable. Double-check that you are ordering the correct part for the door you are repairing.
Helpful Videos
Technical Specifications
OEM Part Numbers: 85720-35160 85720-35161
The motor is a 12V DC unit that attaches to the window regulator assembly with three T25 Torx screws. It connects to the vehicle's wiring via a plastic plug-in connector.
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.
- Toyota 4Runner: