2016–2018 Lincoln MKX
By Tom Becker ✓ Certified Mechanic · Published Sep 21, 2026 · Updated Oct 22, 2026
Save $140 by doing it yourself! Shop cost: $280
Quick answer: Battery Replacement on a 2016–2018 Lincoln MKX is rated Easy and takes about 15–20 minutes. You'll need 4 tools for this job, and parts cost about $140. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Correct group-size battery | — | $140.00 | |
| Terminal cleaner Optional | — | $8.00 | |
| Terminal protectant Optional | — | $7.00 |
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Park on level ground, shut the engine off, and pop the hood. A plastic shroud may cover it — lift or unclip that cover first so you can see both terminals clearly before you touch anything.
Using a 10mm wrench or socket, loosen the nut on the black negative (−) cable clamp and work the cable off the post with a gentle twisting motion — do not pry with a screwdriver or you will crack the terminal. Tuck the cable aside so it cannot spring back against the post. Then loosen and remove the red positive (+) cable the same way and set it safely out of the way.
I tell every DIYer who'll listen: Using a 10mm wrench or socket, loosen the nut on the black negative (−) cable clamp and work the cable off the post with a gentle twisting motion
The MKX battery is held in by a clamp at the base of the tray. Set the old battery on the ground upright, never on its side.
Set the old battery on the ground upright, never on its side. I've seen what happens when people ignore that.
Reinstall the base hold-down clamp and snug its bolt firmly so the battery cannot rock or slide — a loose battery rattles, cracks its case, and can short against the firewall.
Reconnect the red positive cable first and tighten it snug, then the black negative cable last. Give each clamp a firm wiggle — it should not twist on the post at all.
Close the hood and start the engine. Check that the battery warning light goes out, then run the headlights, blower, and radio to confirm steady power.
Some 2016–2018 MKX models run a battery monitoring system that tracks battery age and charge state, and a scan tool reset may be needed after a swap — check your owner's manual to see whether your trim requires it. Expect the clock and radio presets to reset, and give the transmission a few drives to relearn its shift feel. If stop/start behaves oddly or warning lights stay on, have a dealer or shop complete the registration step.
If stop/start behaves oddly or warning lights stay on, have a dealer or shop complete the registration step. I don't skip this anymore.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
2016–2018
2016–2018
2011–2015
2011–2015
2011–2015
2011–2018
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