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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1421 (EXTERIOR LIGHTING SYSTEM)REMOVAL AND INSTALLATIONHEADLAMP CONTROL MODULE (HCM)REMOVAL AND INSTALLATION
2010 Mercury Mariner Hybrid, AWD
Removal and Installation
2010 Mercury Mariner Hybrid, AWDSECTION Removal and Installation
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- If installing a new Headlamp Control Module (HCM), upload the module configuration information to the scan tool. For additional information, refer to MODULE CONFIGURATION -- FUSION MILAN & MKZ article.
- Disconnect the HCM electrical connector.
- Remove the 2 pin-type retainers and the HCM.
- To install, reverse the removal procedure.
- If installing a new HCM, download the HCM configuration information from the scan tool into the new HCM. For additional information, refer to Programmable Module Installation (PMI) MODULE CONFIGURATION -- FUSION MILAN & MKZ article.
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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.