1. Troubleshooting:
* Check the Fuse: Start with the simplest check. Consult your owner's manual to locate the fuse for the power windows. Inspect it for blown elements. Replace if necessary.
* Test the Switch: Try the driver's side switch to operate the passenger window. If it works from the driver's side but not the passenger's, the problem is likely in the passenger's side switch or wiring. If it doesn't work from either side, the issue is likely elsewhere (regulator, motor, or wiring).
* Listen Carefully: When you try to raise the window, listen closely for any unusual sounds from the door. A grinding, clicking, or whirring noise often indicates a problem with the regulator or motor.
* Manual Check (If Possible): Some Aerostars might allow for manual operation of the window if the motor fails completely. Check your owner's manual for this procedure (if it exists). If you can manually raise the window, you know the regulator isn't completely broken.
2. Repair Options (Assuming it's the Regulator):
The window regulator is the most common cause of this problem. It's a mechanism with cables or gears that move the window. Over time, these parts can wear out, break, or become dislodged.
* Replace the Regulator: This is the most likely solution. You'll need to:
* Remove the Door Panel: This involves carefully removing screws and clips that hold the panel in place. Be gentle to avoid breaking any clips. There are many online tutorials and videos specific to 1997 Ford Aerostar door panel removal. Search YouTube for "[Year] Ford Aerostar door panel removal".
* Access the Regulator: Once the panel is off, you'll see the window regulator mechanism. It's usually attached to the door frame.
* Disconnect the Motor: Carefully disconnect the motor from the regulator.
* Remove the Old Regulator: This often involves removing screws or bolts holding the regulator in place.
* Install the New Regulator: Install the new regulator, making sure to connect the motor correctly.
* Reassemble Everything: Put the door panel back in place, ensuring all the clips and screws are securely fastened.
* Repair the Regulator (If Possible): In *some* cases, you might be able to repair a broken regulator by replacing broken cables or gears. This requires mechanical skill and the right parts. It's often more cost-effective to replace the entire regulator unless you are very mechanically inclined.
3. Other Potential Issues:
* Motor: The window motor itself could be faulty. This is less common than a regulator problem, but it's possible. You would need to replace the motor if this is the case.
* Wiring: A broken or disconnected wire in the door harness could also be the issue. Carefully inspect the wiring for any damage.
* Switch: A faulty passenger-side window switch could be responsible. Replacing this is simpler than the regulator, but less likely.
Important Considerations:
* Safety First: Disconnect the negative battery cable before starting any electrical work to prevent accidental shocks or short circuits.
* Parts: You can find window regulators and other parts at auto parts stores (online or brick-and-mortar), junkyards, or online retailers like Amazon. Make sure to get the correct part for your 1997 Ford Aerostar XLT.
* Repair Manuals: A repair manual specific to your vehicle can be very helpful. They often include detailed diagrams and instructions.
* YouTube Tutorials: Search YouTube for videos showing how to repair a window regulator on a similar vehicle. This can be a great visual aid.
If you're not comfortable working on your vehicle, it's best to take it to a qualified mechanic. Replacing a window regulator isn't overly difficult for someone mechanically inclined, but it does require some patience and attention to detail.
