If you drive a 2021+ Ford Bronco, you've felt it: every light, every stop sign, the engine kicks off. Then it stutters back to life when you let off the brake. Ford's Auto Start-Stop (sometimes called Auto Stop-Start, ASS, or ESS) is one of the most complained-about features on the Bronco platform.

You can disable it from the factory switch, sure — but only for that one drive. Next time you start the truck, you're back to square one. That's where an eliminator comes in.

Why Bronco Owners Want This Gone

• Hesitation off the line in traffic
• Annoying restart shudder, especially on the 2.3L EcoBoost
• Accelerated wear on the starter motor and battery
• Having to hit the disable button every single drive

The fix is a small plug-in harness that lives behind your dash. Two minutes to install, and you're done forever.

The Two Best Options for the Bronco

We carry two solid options for the 2021+ Bronco, and the right one depends on what you want.

1. 4DTech Auto Stop-Start Eliminator With Memory — $99.99

4DTech w/ Memory for 2021–2023 Bronco

This is the one most owners want. The "with memory" version remembers your last setting. If you had auto stop-start disabled when you turned the truck off, it'll be disabled when you turn it back on. No more pressing the button every drive.

If you ever do want auto stop-start active (long highway run, trying to squeeze out MPG), you can still toggle it back on from the factory switch — and it'll remember that too.

2. Autostop Eliminator (Permanent Disable) — $99.99

Autostop Eliminator for 2021 Bronco / 2022 Maverick / 2020–21 Escape

This one is simpler — it permanently disables auto stop-start the moment you start the truck. There's no toggle. It's just always off. If you never, ever want the engine to shut off at a light again, this is the cleanest solution.

Memory vs. Permanent — Which One Should You Buy?

• Buy the 4DTech w/ Memory if you want flexibility — toggle ASS on and off from the factory button, and the truck remembers your choice between drives.
• Buy the Autostop Eliminator if you want the simplest possible "set it and forget it" — auto stop-start is just gone, period.

Both are plug-and-play. Neither touches the ECU. Neither throws codes. Both are fully reversible.

Install — About Two Minutes

1. Locate the factory ASS button harness behind the dash.
2. Unplug the factory connector.
3. Plug the eliminator inline between the factory plug and the button.
4. Reinstall trim if you moved any, and you're done.

No tools required for most installs. No cutting. No splicing.

FAQ

Will this affect my warranty?
It's plug-and-play and fully reversible. Unplug it before any dealer visit if you're worried.

Does it work with the 2.7L EcoBoost and 2.3L?
Yes — both eliminators work with the gas Bronco engines listed in the fitment. Check the product page for your specific year.

Will I get a check engine light?
No. The eliminator simulates the factory disable signal.

Bottom Line

Stop fighting your Bronco at every red light. Pick the one that fits how you drive:

• 4DTech w/ Memory — $99.99 (best for most people)
• Autostop Eliminator — $99.99 (always off, no toggle)

Two minutes to install. Years of not pressing that stupid button.