Here's a breakdown of troubleshooting and potential fixes:
1. Check the obvious:
* Fuses: Start by checking the fuses related to the ABS and speedometer systems in your fuse box (consult your owner's manual for locations and ratings). A blown fuse is a simple and inexpensive fix.
* Brake Fluid Level: Low brake fluid can trigger the brake light. Check the brake fluid reservoir and top it off if necessary (but only if you know why it's low. Low fluid suggests a leak!).
2. Diagnose the Speed Sensor:
* Location: The speed sensor is usually located on the transmission. You'll likely need to consult a repair manual specific to your 2002 Ford Windstar to pinpoint its exact location. Pictures online may help too.
* Visual Inspection: Once located, visually inspect the sensor for any obvious damage (broken wires, corrosion, etc.).
* Professional Scan: The best approach is to have a mechanic or auto parts store (many offer free diagnostic checks) scan your vehicle's computer system for diagnostic trouble codes (DTCs). These codes will pinpoint the exact problem, narrowing down whether it's the speed sensor, wiring, or a more serious transmission issue.
3. Potential Solutions (based on the diagnostic scan):
* Replace the Speed Sensor: If the scan points to a faulty speed sensor, replacing it is relatively straightforward (though potentially messy depending on accessibility). You will need a new sensor and potentially some basic tools.
* Repair Wiring: If the scan indicates a wiring problem, you'll need to trace the wiring harness from the sensor to the computer module, looking for breaks, shorts, or corrosion. This may require more advanced electrical troubleshooting skills.
* ABS Module Issues: In some rare cases, the ABS module itself could be the culprit. This is a more expensive repair and usually requires professional intervention.
* Transmission Problems: While less likely, a transmission issue *could* also trigger these symptoms. A professional diagnosis is crucial if the problem persists after addressing sensor and wiring issues.
Important Considerations:
* Safety: Driving with these warning lights illuminated is unsafe. The ABS system may be inoperable, potentially affecting your ability to brake effectively in an emergency. Limit driving until the problem is resolved.
* Professional Help: If you're not comfortable working on your car, or if the diagnostic scan reveals a complex issue, take your Windstar to a qualified mechanic for repair. Improper repairs could worsen the problem or damage other components.
Replacing the speed sensor yourself is a possibility, but diagnosing the root cause is essential to avoid unnecessary expenses. Get that diagnostic scan first!
