Common Window Motor Problems in Ford Ranger, Mazda BT-50 & Ford Focus

Common Window Motor Problems in Ford Ranger, Mazda BT-50 & Ford Focus

If you drive a Ford Ranger PX1, PX2, PX3, a Mazda BT-50 UP or UR, or a Ford Focus Mk3, there's a power window issue you should know about — and it’s more common than you might think. 

How Does Water Get In?

We've found that moisture likely enters the window motor either through the breather vent on the back of the motor, or through unsealed parts of the motor assembly. Once inside, water and moisture can begin to affect the internal workings of the motor, regardless of whether it’s on the front or rear doors.


Pictured Above: Front left OEM window motor from a Mk3 Ford Focus

What Happens Inside?

Once moisture enters the motor, it can lead to the following issues:

  • Corrosion on internal metal components, including the motor casing, connectors and worm drive shaft (as seen below)
  • Rust forming on the internal bearings, causing increased resistance and wear
  • Debris buildup from corroded parts, which can interfere with motor movement
  • Increased electrical resistance or motor failure over time

These problems often lead to windows that are slow to move, only work intermittently, or stop working altogether.


Pictured Above: Front left OEM window motor from a Mk3 Ford Focus

Which Vehicles Are Affected?

This issue has been observed frequently in:

  • Ford Ranger PX1, PX2, PX3 (2011–2022)
  • Mazda BT-50 UP & UR Series (2011–2020)
  • Ford Focus Mk3 (2011–2018)

These models share similar factory window motor designs, making them vulnerable to the same kinds of issues related to water ingress and internal wear.

Signs Your Window Motor May Be Failing

Here are the most common symptoms of a failing window motor:

  • Slow or jerky window movement
  • Unusual clicking, grinding, or buzzing when operating the switch
  • Intermittent operation — the window works one day and not the next
  • Total failure — no movement or sound when the switch is activated

If you're experiencing any of the above, it’s a good idea to inspect your window motor or consider a replacement.

The Solution: Reliable Replacement Window Motors Backed by Warranty

At WindowMotor.com.au, we supply high-quality aftermarket window motors designed to fit your vehicle without fuss.

Why choose us?

  • 3-Year Warranty – Peace of mind with every purchase
  • Fast Delivery – Most orders ship within 24 hours
  • Excellent Customer Service – Real support from real people

We stock replacement window motors for:

  • Ford Ranger PX1, PX2, PX3
  • Mazda BT-50 UP/UR
  • Ford Focus Mk3

👉 Browse Replacement Window Motors Here

Need Help Finding the Right Part?

Whether you’re fixing it yourself or getting help from a mechanic, we’re here to assist. If you need help selecting the right motor for your vehicle, contact our friendly team here.

Final Thoughts

Water ingress and internal corrosion are common reasons why window motors fail in the Ford Ranger, Mazda BT-50, and Ford Focus Mk3. Replacing your motor with a reliable aftermarket option backed by a strong warranty is the smart, cost-effective solution.

At WindowMotor.com.au, we're committed to keeping your windows running smoothly — and your experience stress-free.


Back to blog