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.
Powertrain Control Module (PCM): Removal
2010 Mercury Mariner Hybrid, AWDSECTION Removal
WARNING: This page is about a different variant/trim than selected.
- Retrieve the module configuration. Carry out the module configuration retrieval steps of the Programmable Module Installation (PMI) procedure. For additional information, refer to PROGRAMMABLE MODULE INSTALLATION (PMI) .
- Detach the wiring harness retainer from the cowl stud bolt.
- Disconnect the 3 PCM electrical connectors.
- Remove the 2 bolts and the PCM.
- Remove and inspect the PCM cowl seal; install new if damaged.
NOTE:
PCM installation DOES NOT require new keys or programming of keys, only a Parameter Reset of the Passive Anti-Theft System (PATS).
RENDER: 1.0x
NO RELATED
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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.