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)DESCRIPTION AND OPERATIONEXTERIOR LIGHTINGEXTERIOR LIGHTING SYSTEM
2010 Mercury Mariner Hybrid, AWD
Exterior Lighting System
2010 Mercury Mariner Hybrid, AWDSECTION Exterior Lighting System
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.
The exterior lighting system consists of the following components:
- Headlamps
- Ballasts (if equipped with High Intensity Discharge (HID) headlamps) (located on the underside of each headlamp)
- Front side marker lamps
- Rear side marker lamps
- Rear lamp assemblies
- High mounted stoplamp
- Reversing lamps
- Headlamp switch
- Multifunction switch
- Hazard flasher lamp switch (located in front of the instrument panel storage bin for Fusion/Milan or the lower portion of the center instrument panel finish panel for MKZ)
- Light sensor
- Stoplamp switch
- Reversing lamp switch (located on the forward side of the manual transaxle)
- SJB (located to the left of the brake pedal)
- Headlamp Control Module (HCM) (located next to the SJB)
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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.