These instructions apply to the Kia Sorento Mk4 (MQ4) 2020-Present. For other models, please choose your vehicle here.
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The Kia Sorento Mk4 (MQ4, 2020–present) has an Idle Stop & Go (ISG) system that switches the engine off at a standstill to save fuel. If you’d rather keep it running — in traffic, on a hot day, or before working in the engine bay — you switch it off with one button. (Hybrid Sorentos manage the engine automatically and don’t use a conventional ISG button.)
How to Turn Off Idle Stop & Go
- Find the ‘A OFF’ (ISG) button on the dashboard, usually near the steering wheel or switch bank.
- Press it once — the indicator confirms ISG is off, and the engine will keep running when you stop.
It Resets Every Drive
Like nearly every car with this feature, the Sorento re-enables ISG each time you switch the ignition off and on. There’s no permanent factory ‘off’ — press the button once per journey if you don’t want it.
Why Switch It Off?
- Before engine-bay work — stops an unexpected restart.
- Stop-go traffic — avoids constant restarts.
- Maximum cabin cooling/heating on extreme days.
ISG also won’t stop the engine on its own when the battery is low, the cabin is still heating/cooling, or the engine is cold — that’s normal.
Frequently Asked Questions
How do I turn off auto stop/start on a Kia Sorento?
Press the A OFF (ISG) button on the dash; the indicator confirms it’s off.
Can I disable it permanently?
No — it resets to on at every ignition cycle. Press the button each drive.
Why did ISG come back on?
Switching the ignition off and on re-enables it automatically.
Why won’t the engine stop sometimes?
A low battery, climate demand or a cold engine will hold it running — that’s by design.
If an ISG fault light shows instead of the normal indicator, look it up on autodtcs.com — a tired 12 V battery is the usual cause. See our Sorento battery guide.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
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