1. Fuses: Check the fuse(s) related to the cruise control system in the fuse box (both under the hood and inside the cabin). Your owner's manual will show you the fuse box diagrams and which fuses are for the cruise control. A blown fuse is the easiest and cheapest fix.
2. Vacuum System (Most Likely Culprit): The 2002 Ford Escape's cruise control likely uses a vacuum system. Problems here are common:
* Vacuum Leaks: Look for leaks in the vacuum hoses connected to the cruise control system. These hoses can become brittle, cracked, or disconnected over time. A visual inspection is necessary.
* Vacuum Pump or Manifold: If there's a problem with the engine's vacuum pump or the intake manifold, there won't be sufficient vacuum for the cruise control to function. This is more complex and requires a mechanic to diagnose.
3. Cruise Control Switch (Steering Wheel): The switch on the steering wheel itself could be faulty. This is often tested by a mechanic using a scan tool to check for signals from the switch. Sometimes, cleaning the contacts might help, but a replacement switch might be necessary.
4. Speed Sensor: The cruise control needs to know your speed to maintain it. A faulty vehicle speed sensor (VSS) will prevent the cruise control from working. This often leads to other issues, like the speedometer not working correctly.
5. Brake/Clutch Switches: If the brake or clutch switch (depending on transmission type) is malfunctioning, it'll disable the cruise control as a safety feature. These switches are relatively inexpensive to replace.
6. Transmission Issues (Less Likely): Problems within the transmission itself could, in rare cases, prevent the cruise control from functioning properly. This is a less likely cause unless you're experiencing other transmission problems.
7. Wiring Problems: Check the wiring harness connected to the cruise control system for damage, corrosion, or loose connections. This is often hard to diagnose without experience.
How to Proceed:
1. Start with the fuses. This is the easiest and fastest check.
2. Inspect the vacuum hoses visually. Look for cracks, kinks, or disconnections.
3. Check the brake/clutch switches. Ensure they're functioning correctly.
4. If none of the above solves the problem, you'll likely need a mechanic to diagnose more complex issues like vacuum leaks in the system, problems with the speed sensor, or issues with the steering wheel switch. A scan tool can be helpful for reading diagnostic trouble codes (DTCs).
Don't attempt repairs you're not comfortable with. If you lack automotive experience, it's best to consult a qualified mechanic to avoid further damage.
