2020-2025 Hyundai Palisade ISG Auto Stop Eliminator | Memory Harness

If your Hyundai Palisade turns ISG (Idle Stop & Go) back on every time you start it, this ISG memory harness solves that one problem: it remembers the last setting and restores it at the next ignition cycle. Coverage is the 2020–2025 Hyundai Palisade. It connects at the ISG button circuit, between the switch and its factory plug.

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):

• Hyundai Palisade: 2020–2025

The listing is written around the first-generation (2020-2025) Palisade. Trim levels are not split out in the table, so confirm that your vehicle has the stop-start button before ordering.

How ISG (Idle Stop & Go) behaves from the factory

The factory logic arms ISG (Idle Stop & Go) every time the engine starts. Turning it off with the button only lasts until the engine is shut down. Owners who sit in stop-and-go traffic, tow, or idle in drive-throughs often prefer it off, and that is where the repeated button press comes from.

Typical reasons to keep it off

Drivers usually switch stop-start off for comfort or habit. A restart at every stop is noticeable in a three-row midsize SUV, 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.

Before blaming the module

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.

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.

Installation and removal

It connects at the ISG button circuit, between the switch and its factory plug. 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 ISG (Idle Stop & Go) off, cycling the ignition and checking the indicator.

A note on the battery

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.

What to expect

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

Check before you order

• Model year and model match a row in the table above (2020–2025 Hyundai Palisade).
• Your Hyundai Palisade 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.

Shipping and support

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.