Why Your Car Window Goes Down But Not Up (Common Causes & Fixes)

If your window goes down fine but won’t come back up, you’re dealing with one of the most common power window faults. The good news? You can usually narrow it down quickly without pulling the whole door apart.

If it:
Goes down normally
But won’t go up

👉 The issue is usually not power supply
👉 It’s either directional (switch/wiring) or mechanical resistance/failure

If you're dealing with broader issues or multiple windows not working, start here:
👉 Power Windows Not Working – Common Issues & Fixes

Most Common Causes

1. Faulty Window Switch

Window switches have separate contacts for up and down that wear over time.
Vehicles with auto up/down put extra load on the system—especially at the very top and bottom of the window travel where the motor briefly stalls.

Over time, this added stress can:

🔧 Wear switch contacts faster
⚙️ Contribute to motor fatigue
❌ Accelerate wear or break teeth on internal gears (common in Mazda motors)

👉 This is often why failures show up when the window is fully closed or fully open.

2. Window Motor Gear Failure (Mazda Example)

This is a very common failure point—especially in ageing Mazdas.

Inside many Mazda window motors are plastic gears that can:

❌ Wear down
❌ Snap teeth completely

👉 The motor may still spin (you might hear it), but it can’t lift the window.

Since lifting requires more force than lowering:
👉 The window drops fine… but won’t go back up

Common signs:

🔊 Motor noise but no movement
🔄 Clicking or spinning sound inside the door

If you want to confirm whether the motor is actually at fault, follow this guide:
👉 How to Test a Window Motor

3. Worn or Binding Regulator

The regulator is the mechanism that lifts the glass.

If it becomes:

⚠️ Worn
⚠️ Bent
⚠️ Or stiff

👉 The motor can push the window down
👉 But struggles (or fails) to bring it back up

Clue:
The window was getting slower over time before it stopped working.

4. Wiring Break in Door Loom

The wiring between the body and the door flexes every time the door opens and closes.

Over time:

⚡ Wires can break internally
⚡ Often affecting one direction only

Quick 30-Second Check

Before pulling anything apart:

Turn ignition ON
Hold the UP switch
Slowly open the door fully (release at full extension & wait 5 seconds)

Hold the UP switch
Slowly close the door

👉 If the window suddenly moves during opening or closing:
The wiring in the door loom is most likely damaged or broken.

What’s Most Likely?

Works from one switch only
→ Faulty switch

Motor noise but no movement
→ Motor (common gear failure)

Slow before stopping
→ Motor or regulator

Completely unresponsive
→ Wiring or motor

Bottom Line

If your window goes down but not up, don’t guess.

Start with the switch—but in many cases (especially Mazdas), the issue comes back to internal motor failure, where worn or broken gears can no longer handle the load.

📞 How can I reach you?
Call us on 0410 913 385 or use our Contact Page. We’re happy to help!