Kia Telluride ISG Not Working – How To Fix

By Max Anthony •  Updated: 10/05/22 •  3 min read

The Kia Telluride is a mid-size SUV that is marketed as a luxury sport utility vehicle. It is a wonderful vehicle that has been built in a very impressive way. The vehicle has some really good features and offers the best in quality and safety. The vehicle is also very comfortable and stylish. It has been designed to provide an excellent experience for the driver and passenger alike.

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It is also one of the safest vehicles on the market today because it comes with a number of great safety features such as rear cross traffic alert sensors, child seat anchors for child seats, blind spot monitoring system and much more. However, many have wondered about the issues with its ISG system that can sometimes occur. Read through this article to learn more about this.

What is ISG Deactivation?

Kia’s ISG system automatically stops the engine when the car is in a jam and restarts it when the driver is ready to move on. Driving in big cities where traffic is heavily backed up means stopping and starting the engine quite frequently.

The ECU checks that information from all the cars systems before deciding whether the engine should be shut down or not. When the car is moving quickly, a new engine that uses a high efficiency accelerator does not produce any electrical power when the car slows down. This allows the engine to continue to charge the battery while the car is moving slowly.

Kia says the Idle Stop & Go (ISG) system is not suitable for situations where there is an increased risk that the battery will drain rapidly. It can be extremely cold in a very cold climate or the engine temperature in a very hot vehicle is not sufficient to cause damage to the battery.

Troubleshooting Kia Telluride ISG Issues

Check the battery

If the engine suddenly stops working, so does the alternator; similarly, the battery must keep running the HVAC, infotainment and other systems without interruption. The correct battery fits in the same place in the vehicle as one that does not have an ISG system. It is possible that the BCI group size is the same for the same vehicle.

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If you look at the battery label on your vehicle and see what it says about cold cranking amps and reserve capacity, you should be able to order the correct battery. The battery that you choose should meet or exceed these requirements. If the battery is below the minimum percentage of the system’s standard operating condition (SOC), the ISG system will not function. When the engine is cranking for more than two seconds, ISG will be deactivated.

Check the code

What causes most ISG modules to stop working is when there are codes stored in the ISG modules. Codes stored in ISG modules cause a system to stop working. Codes which disable the ISG module from communicating with other modules will stop it working because the ISG needs to communicate with other modules, such as the ECM and transmission.

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Max Anthony

Max is a gizmo-savvy guy, who has a tendency to get pulled into the nitty gritty details of technology and cars. He attended UT Austin, where he studied Information Science. He’s married and has three kids, one dog and a GMC truck and a Porsche 911. With a large family, he still finds time to share tips and tricks on cars, trucks and more.

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