The Kia Telluride’s auto start/stop system might help with fuel economy, but it can drive you crazy with its constant engine cycling in traffic. Many owners find the delay when accelerating from stops both annoying and potentially unsafe.
Understanding the ISG Auto Start/Stop System
Your Kia Telluride uses what’s called an Idle Stop and Go (ISG) system, shared with several Hyundai models. When you come to a complete stop, the system shuts off your engine to save fuel. Press the accelerator or release the brake, and the engine restarts automatically.
While this sounds good on paper, the real-world experience often frustrates drivers. The restart delay can feel sluggish when you need to accelerate quickly. The constant stopping and starting also creates vibration and noise that many find annoying during daily driving.
The system works through sensors monitoring your brake pedal, accelerator position, steering wheel movement, and battery charge level. If any conditions aren’t perfect, the engine stays running, which means the system often activates unpredictably.
The Temporary Fix: Using the Dashboard Button
Kia includes a manual override button for the auto start/stop system. You’ll find this button on your center console, usually near the electronic parking brake or drive mode selector. Look for a circular icon with an “A” inside and an arrow forming a partial circle around it.
Press this button once when you start your Telluride, and you’ll see an indicator light on your dashboard showing the system is disabled. The engine will then behave normally, staying running when you stop.
This method works perfectly while you’re driving. The problem comes when you turn off your vehicle.
Why the Temporary Fix Gets Old Fast
Every single time you start your Telluride, the auto start/stop system reactivates automatically. You’ll need to press that button again to disable it. Miss it once, and you’re back to dealing with the engine cycling on and off.
This daily routine becomes especially annoying during short trips or when running errands. You start the car, remember to hit the button, drive somewhere, turn off the engine, restart it, and have to hit the button again.
After a few weeks of this routine, most drivers start looking for a permanent solution that doesn’t require daily intervention.
Permanent Solutions for Your Telluride
Several aftermarket options can permanently disable the auto start/stop system on your 2020-2026 Kia Telluride. These fall into two main categories: plug-and-play devices and software modifications.
Plug-and-Play Eliminator Devices
The simplest permanent fix involves small devices that plug into your vehicle’s systems. These work in two ways: OBD2 port devices or button bypass modules.
Auto start/stop eliminator devices that connect to your OBD2 port (located under your dashboard near your left knee) continuously send signals telling the system to stay disabled. You just plug them in and forget about them.
Button bypass modules connect behind your existing ISG button, automatically “pressing” it electronically each time you start the vehicle. This approach feels more like the factory system since the dashboard still shows when the system is disabled.
Most owners prefer the OBD2 port devices because they’re easier to install and remove if needed. The trade-off is that they occupy your diagnostic port, which you might need for other tools or devices.
Software Coding Options
The Telluride’s computer systems can sometimes be modified using OBD2 coding tools, though options for Kia vehicles are more limited than for German cars. Some owners have had success with generic OBD2 scanners that can access and modify specific system parameters.
This approach requires more technical knowledge and carries slightly higher risks if you modify the wrong settings. You’ll need a compatible OBD2 scanner and software that can communicate with Kia’s system protocols.
Software modifications also tend to be less reliable across different model years and trim levels, since Kia occasionally changes how the system operates through software updates.
Installation Overview for OBD2 Eliminators
Installing an OBD2 auto start/stop eliminator takes about five minutes and requires no tools. Here’s the basic process:
- Locate your OBD2 port under the dashboard on the driver’s side
- Make sure your ignition is off
- Plug the eliminator device firmly into the port until it clicks
- Start your vehicle and check that the auto start/stop system stays disabled
- Test by coming to a complete stop to verify the engine keeps running
The device should begin working immediately. Most quality eliminators don’t require any setup or programming, they just communicate with your Telluride’s systems automatically.
If you ever need to remove the device, just pull it straight out of the port. Your auto start/stop system will return to factory behavior on the next startup.
Important Considerations Before Disabling
Warranty Implications
Disabling your auto start/stop system could potentially affect your warranty coverage, though this depends on the specific issue and your dealer’s policies. Plug-and-play devices are generally less risky than permanent modifications since they can be easily removed.
If you need warranty service, you can unplug the device beforehand. Most service technicians won’t even notice it was there.
Fuel Economy Impact
You’ll see a small decrease in fuel economy, especially in city driving with frequent stops. EPA estimates assume the auto start/stop system is active, so your real-world mileage might drop by 1-2 mpg in urban conditions.
Highway driving won’t be affected since the system doesn’t activate at speed anyway. Many owners find the improved driving experience worth the slight fuel economy penalty.
Emissions and Inspections
The auto start/stop system is part of your vehicle’s emissions control strategy, though disabling it typically won’t cause inspection failures. The system doesn’t affect your catalytic converter, oxygen sensors, or other monitored emissions components.
Your vehicle should still pass standard OBD2 emissions tests, since the eliminator devices don’t typically trigger check engine lights or fault codes.
Recommended Products
Several manufacturers make reliable auto start/stop eliminator devices compatible with the Kia Telluride. Look for devices specifically mentioning compatibility with Kia or Hyundai vehicles, since the systems are shared between brands.
Generic “universal” eliminators sometimes work but tend to be less reliable than vehicle-specific designs. Spending a bit more for a device designed for your specific vehicle usually pays off in reliability.
Read reviews carefully and check the return policy before purchasing. A good eliminator should work immediately without any setup or programming required.
Frequently Asked Questions
Will disabling auto start/stop damage my engine?
No, disabling the system won’t harm your engine. Your Telluride’s engine is designed to run continuously like traditional vehicles. The auto start/stop system is an add-on feature for fuel savings, not a requirement for engine health.
Can I still use my OBD2 port for other things?
If you install an OBD2 eliminator device, it will occupy the port continuously. Some devices include a pass-through connector that allows you to plug in other tools when needed, though this varies by manufacturer.
Will my dealer know I disabled the system?
Plug-and-play eliminators typically don’t leave permanent traces in your vehicle’s computer memory. If you remove the device before service, your dealer likely won’t know it was ever installed. Software modifications might be more detectable.
Does this work on all Telluride trim levels?
The auto start/stop system works the same way across all Telluride trim levels from 2020-2026. Eliminator devices that work on one trim should work on all others, since they all use the same ISG system.
This article contains affiliate links. If you purchase through these links, we may earn a small commission at no extra cost to you.
Leave a Reply