2018-2020 Ford F-150 Auto Start Stop Eliminator Memory Harness | Plug & Play

Built for the 2018–2020 Ford F-150, 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.

It does not delete the feature. Turning stop-start back on is the same button press as before, and the module will remember that too. Removing it returns the vehicle to its original default.

Vehicles and years covered

Listed applications (each row is a 100% fitment match for the factory connector this part uses):

• Ford F-150: 2018–2020

For reference, the Ford F-150 in these years is a full-size pickup offered with 2.7L and 3.5L EcoBoost V6 and 5.0L V8 engines, with the 3.0L Power Stroke diesel and 3.5L PowerBoost hybrid offered on selected years. The listing is written around the thirteenth-generation (2015-2020) F-150. The table does not separate trims; what matters is that the vehicle has factory stop-start and the connector shown in the photos.

What the factory system does

Each start of the Ford F-150 begins with Auto Start-Stop enabled. The switch on the dash can disable it, but only until the key is cycled. This module records the switch position and repeats it after the restart, which is the entire job it does.

Where owners notice the difference

Drivers usually switch stop-start off for comfort or habit. A restart at every stop is noticeable in a full-size pickup, the climate system may run at reduced output while the engine is off, and quick moves into traffic feel slower when the engine has to fire first. If those are your reasons, you probably press the button on every drive now. With the module, you press it once.

Installation and removal

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. Work with the ignition off. Seat each connector until its lock engages, then secure the module with the supplied ties or tape so it cannot rattle or touch pedals, steering parts or anything hot. Start the vehicle, press the stop-start button once, then restart to confirm the choice is held.

Conditions the factory system checks

The factory system will skip an auto stop for many reasons: battery charge below its threshold, cold coolant, high climate-control load, a steep grade, the hood or driver door open, or a 4WD or tow mode on vehicles that have them. Those checks stay in control after this module is installed. It does not force stops and it does not bypass any of those safety inputs.

Keep the battery healthy

The module draws its power from the vehicle and does not change charging behavior. If your Ford F-150 sits for long periods, the same rules apply as without it: a maintainer helps, and a battery that tests weak should be replaced with the type specified for stop-start vehicles (usually AGM or EFB).

Troubleshooting notes

If a "stop-start unavailable" or similar message appears, check the battery first. A battery that tests weak, a recent battery replacement that was not registered where the manufacturer requires it, or a fault in the battery current sensor can all disable the system. Clear up those issues before judging how the module works, because it cannot hold a setting the vehicle refuses to accept.

Scope of the module

• Comes out in the same way it went in, with nothing cut.
• Carries your stop-start choice over to the next drive.
• Does not disable warning lights or diagnostic functions.
• Fuel use changes only the way it would if you pressed the off button yourself.

Quick fitment check

• Model year and model match a row in the table above (2018–2020 Ford F-150).
• Your Ford F-150 has the factory stop-start button. Base trims or engines without stop-start have nothing for the module to remember.
• 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.
• The connector at your install point matches the one in the product photos.
• If you are unsure, send your VIN to support@automotivebypass.com and we will confirm fitment.

Shipping, returns and warranty

Shipping is free to the contiguous US. Orders leave in 1–2 business days and usually arrive 3–4 business days later. Returns are accepted within 45 days with pre-approval; a 20% restocking fee applies and the buyer covers return shipping. The part carries a 3-year limited warranty, and support@automotivebypass.com answers Monday to Friday, 9–5 Pacific.