1. Check the Obvious:
* Power: Make sure the power windows fuse is not blown. Check your owner's manual for the fuse location and rating.
* Switch: Try the window switch in different positions (all the way up, all the way down, and holding it). A faulty switch is a common culprit. Try using the driver's side master switch to operate the problematic window to see if the switch itself is the issue. If it works from the master switch but not the passenger switch, the problem is likely the passenger switch.
* Window Jam: Carefully check if anything is obstructing the window from going all the way up. Debris, ice, or even something caught in the track can prevent the motor from properly lifting the glass.
2. Investigate the Window Regulator:
This is the most likely culprit. The regulator is the mechanical assembly that actually moves the window. Over time, the cables can fray, break, or become dislodged from their pulleys.
* Access the Regulator: You'll need to remove the door panel to access the regulator. There are many online guides and videos specific to 1995 Nissan Maxima door panel removal; search YouTube for "1995 Nissan Maxima door panel removal". Be careful not to break any plastic clips.
* Inspect the Regulator: Once the panel is off, carefully inspect the regulator mechanism. Look for:
* Broken cables: This is the most common failure. You'll likely see frayed or broken strands of cable.
* Dislodged cables: The cables might have come off their pulleys.
* Bent or broken parts: Check for any other obvious damage to the regulator components.
* Test the Motor (if possible): With the regulator exposed, you might be able to manually test the motor (with the power disconnected!) If you can power the motor directly and it doesn't function, the motor itself is likely bad.
3. Other Potential Problems:
* Motor: As mentioned, a faulty motor is possible, but less common than regulator issues.
* Wiring: Check the wiring harness connecting the switch to the motor for any broken or frayed wires. A multimeter can help check continuity.
* Window Tracks: Lubricate the window tracks with silicone-based lubricant. This can help if the window is binding, but it's unlikely to be the sole cause of the window not staying up.
Repair or Replacement:
* Regulator Repair: Some regulators can be repaired by replacing broken cables, but this requires some mechanical skill and specialized tools.
* Regulator Replacement: This is often the easiest and most cost-effective solution. You can find replacement regulators online or at auto parts stores. Be sure to get one specifically for a 1995 Nissan Maxima.
* Motor Replacement: If the motor is faulty, it will also need to be replaced.
Important Notes:
* Disconnect the battery negative terminal before starting any work on the electrical system to prevent accidental shorts.
* Take pictures as you disassemble the door panel to help you remember how to put it back together.
* Consult a repair manual: A repair manual specific to your vehicle will provide detailed instructions and diagrams.
If you're not comfortable working on car repairs yourself, it's best to take your Maxima to a qualified mechanic. The cost of replacing the regulator is generally much less than the cost of a mechanic's labor.
