2017-2020 Ford Fusion Auto Start Stop Eliminator | Plug & Play

Built for the 2017–2020 Ford Fusion, this plug-and-play memory harness keeps Auto Start-Stop in whatever state you left it. Press the button once, and the setting carries over to the next start. It plugs in line with the factory connector named in the instructions, using factory-style plugs on both ends, so nothing is cut or spliced.

Nothing is reprogrammed in the engine computer. The module only stands in for the button press you would otherwise make after every start, and it comes out without leaving a trace.

Fitment

Every row below is listed as a 100% fitment match for this part:

• Ford Fusion: 2017–2020

For reference, the Ford Fusion in these years is a midsize sedan offered with 1.5L and 2.0L EcoBoost four-cylinder engines, plus hybrid and plug-in hybrid versions. The listing is written around the second-generation (2013-2020) Fusion. Trim levels are not split out in the table, so confirm that your vehicle has the stop-start button before ordering.

What the factory system does

Auto Start-Stop is designed to default to on. The off switch (usually marked with an "A" inside a circular arrow) cancels it for the current drive. At the next start the system is armed again. That reset is intentional on the manufacturer's side, and it is the only behavior this module changes.

What to expect

• Leaves no permanent change after removal.
• Leaves engine and transmission software untouched.
• Lets you re-enable the system with the factory button at any time.
• Holds the stop-start button state between drives.

Conditions the factory system checks

Auto stop needs several conditions at once: a warm engine, enough battery charge, moderate cabin heating or cooling demand, and the vehicle fully stopped with the brake held. If any is missing, the engine keeps running. The module only remembers the button state; the factory controller still decides whether a stop is allowed.

Installing the plug-and-play memory harness

It plugs in line with the factory connector named in the instructions, using factory-style plugs on both ends, so nothing is cut or spliced. Disconnect nothing else and splice nothing. Once both plugs are locked, tuck the harness where it will not be pinched when the panel goes back on. Test by switching Auto Start-Stop off, cycling the ignition and checking the indicator.

Diagnostics first

If the setting is not remembered, check that the module was installed with the ignition off and that the connector clicked into place. Then press the factory button once, switch the vehicle off, close the doors, give the electronics time to shut down, and start again. If it still resets, contact support with the year, trim and a photo of the connector.

Keep the battery healthy

Most stop-start systems watch battery condition closely through a sensor on the negative terminal. When the battery ages, the system quietly stops auto-stopping long before the battery fails to crank. Keeping the original battery type (AGM or EFB) and a clean, tight ground connection avoids a lot of confusion about why the system behaves differently from week to week.

Where owners notice the difference

Pressing the same button on every drive is what wears on owners. People who tow, plow, idle in pickup lines, creep through heavy traffic or simply want the engine running at a light end up making the same press dozens of times a week. On the Ford Fusion, the module turns that into a one-time choice you can still change whenever you want.

Confirm these points

• Model year and model match a row in the table above (2017–2020 Ford Fusion).
• Your Ford Fusion has the factory stop-start button. Base trims or engines without stop-start have nothing for the module to remember.
• The connector at your install point matches the one in the product photos.
• The battery and charging system test good and no warning lights are on.
• No aftermarket remote start, alarm or gateway bypass is wired into the same circuit. If one is, email support before ordering.
• If you are unsure, send your VIN to support@automotivebypass.com and we will confirm fitment.

Warranty and returns

Free standard shipping covers the contiguous US, with dispatch in 1–2 business days and 3–4 days on the road after that. You have 45 days to request a return (pre-approval required, 20% restocking fee, buyer-paid return shipping). The module is backed by a 3-year limited warranty. For order or fitment questions, write to support@automotivebypass.com between 9 and 5 Pacific, Monday through Friday.