Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY1998MOUNTAINEER 5.0 P, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 10 (POWER DOOR LOCK SYSTEM & TRUNK RELEASE)
1998 Mercury Mountaineer 5.0 P, AWD
Section 10 (Power Door Lock System & Trunk Release)
1998 Mercury Mountaineer 5.0 P, AWDSECTION Section 10 (Power Door Lock System & Trunk Release)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1997 Mercury Mountaineer, 1997 Ford Ranger, 1997 Ford RV Cutaway, 1997 Ford Explorer, and 1997 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
- Description & Operation
- Trouble Shooting
- Symptom Tests
- Notes
- Test A: One Power Door Lock Inoperative
- Test B: All Power Door Locks Inoperative (AEROSTAR)
- Test C: All Power Door Locks Inoperative (Explorer & Mountaineer)
- Test D: All Power Door Locks Inoperative (Ranger)
- Test E: All Power Door Locks Inoperative (Van)
- Test F: All Power Door Locks Operate From One Switch Only (AEROSTAR & Ranger)
- Test G: All Power Door Locks Operate From One Switch Only (Van)
- Test H: Power Door Locks Operate In One Direction Only (AEROSTAR)
- Test I: Power Door Locks Operate In One Direction Only (Explorer & Mountaineer)
- Test J: Power Door Locks Operate In One Direction Only (Ranger)
- Test K: Power Door Locks Operate In One Direction Only (Van)
- Test L: Sliding Door Lock Inoperative (AEROSTAR)
- Test M: Sliding Door Lock Inoperative (Van)
- Test N: Liftgate Door Lock Inoperative (AEROSTAR, Explorer & Mountaineer)
- Test O: Power Door Locks Operate Only With Engine Running
- Test P: Power Door Locks Operate Intermittently (Except Van)
- Component Testing
- Removal & Installation
- Wiring Diagrams
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.