Here's how you can approach opening the rear doors and window:
1. Try Troubleshooting the Electrical System (Before resorting to other methods):
* Check Fuses: Consult your owner's manual to locate the fuses for the power locks and power windows. Replace any blown fuses.
* Inspect Wiring: If you have some electrical experience, carefully inspect the wiring harness leading to the interior door switches. Look for any broken, frayed, or disconnected wires. This is often a cause of intermittent or failed switch operation.
* Battery Voltage: A low battery voltage can sometimes cause intermittent power lock issues. Check your battery voltage.
* Body Control Module (BCM): The BCM controls many electrical functions. A malfunctioning BCM could be the culprit. This usually requires professional diagnosis.
2. Manual Override (If Equipped):
* Rear Doors: Some Astro vans have a manual unlock mechanism hidden inside the door. Check the door jamb for a small hole or lever. You might need a small, sturdy tool (like a bent paperclip) to reach and actuate this.
* Rear Window: The rear window is less likely to have a manual override. There is typically no way to open it mechanically if the power switch is not functioning.
3. Professional Assistance:
If you can't find a manual release and electrical troubleshooting doesn't work, take your Astro to a qualified mechanic or locksmith. They have tools and expertise to diagnose and repair the electrical system or potentially gain access to the doors and window without causing damage. They may be able to access and unlock the doors using specialized tools even without a manual release mechanism.
Important Note: Avoid forcing anything. Trying to pry open the doors or window could cause significant damage to the door panels, locks, and window mechanisms, increasing repair costs significantly.