🔋Battery Location
Mercury Mariner Battery Location
Find where the battery is located on your Mercury Mariner. Covers all model years with jump start points and replacement tips.
Quick Answer
The Mercury Mariner battery is located in the engine bay on most models. Some years may have the battery in the trunk or under the rear seat — see the year-by-year breakdown below.
2006-2011
2006-2011Battery LocationEngine bay
Battery Group SizeGroup 35, 24F, or 48 (varies by engine)
CCA (Cold Cranking Amps)500 - 700 CCA recommended
Battery TypeStandard flooded or AGM
Notes
- →Disconnect the negative terminal first when removing, reconnect it last when installing
- →Clean battery terminals with a wire brush and apply dielectric grease to prevent corrosion
2005-2005
2005-2005Battery LocationEngine bay
Battery Group SizeGroup 35, 24F, or 48 (varies by engine)
CCA (Cold Cranking Amps)500 - 700 CCA recommended
Battery TypeStandard flooded or AGM
Notes
- →Disconnect the negative terminal first when removing, reconnect it last when installing
- →Clean battery terminals with a wire brush and apply dielectric grease to prevent corrosion
Frequently Asked Questions
- Where is the battery on a Mercury Mariner?
- On most Mercury Mariner models, the battery is in the engine bay. Some European-influenced designs and certain model years place it in the trunk or under the rear seat for better weight distribution. Check your specific year below.
- What size battery does a Mercury Mariner need?
- The Mercury Mariner typically uses a Group 35, 24F, or 48 battery depending on the engine and model year. CCA requirements range from 500-700. Vehicles with start-stop systems require an AGM battery.
- How long does a Mercury Mariner battery last?
- A Mercury Mariner battery typically lasts 3-5 years. In hot climates like Texas and the Southwest, expect closer to 3 years. AGM batteries in start-stop equipped models may last 4-6 years.
- Can I replace the Mercury Mariner battery myself?
- Yes, battery replacement is a straightforward DIY job on most Mercury Mariner models. You'll need a 10mm wrench for the terminals and possibly a 12mm or 13mm for the hold-down bracket. Some newer models may need a battery registration scan with an OBD2 tool.