About Stop-Start Reset: What You Need to Know

Jun 27,2023
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What is stop start reset?

Stop-start reset means a function or process in a vehicle that allows the driver to reset the stop-start system. The Stop-Start system, also known as the engine auto start-stop system, aims to save fuel and reduce emissions by automatically shutting down the engine and restarting it when the vehicle is stationary.

How does stop-start reset work?

Operation of the stop-start reset function may vary by vehicle and manufacturer. Here we have compiled for you the general working principle of the stop-start reset function:

Activate the reset: To perform a stop-start reset, it is usually necessary to access the vehicle's control settings or find a dedicated button or switch designed for this purpose. The exact location and method may vary by model.

Disable the stop-start system: After accessing the reset function, activating it will disable the stop/start system. This means that the engine will no longer automatically shut off when the vehicle is stopped.

Engine running continuously: After performing a reset, the engine will continue to run continuously even if the vehicle is stationary. This allows you to bypass the default behavior of the stop-start system.

Manual control: With stop-start reset enabled, you can manually shut down the engine if desired. This can usually be done by turning off the ignition or using a dedicated button or switch.

It is important to note that enabling the stop-start reset function will keep the engine running continuously, which may lead to increased fuel consumption and emissions.  However, it can be useful in certain situations, such as during rapid acceleration or when driving in certain traffic conditions, when the default behavior of the stop/start system is not desired.

We recommend that for accurate instructions on how to use the stop-start reset feature in your particular vehicle, it is best to consult the owner's manual or contact the manufacturer or dealer for accurate information.

Why is a stop-start reset needed?

The stop-start reset feature gives drivers more control over the operation of the stop/start system in their vehicles. Here are a few aspects that require a stop-start reset function:

Personal preference: Some drivers may prefer the engine to run continuously. Especially in certain driving conditions or traffic situations. The stop-start reset feature allows the driver to override the default behavior and keep the engine running continuously according to their preference.

Performance requirements: If on the highway or when performing a quick acceleration, drivers may desire immediate power delivery without any delay caused by the engine restarting. By using the stop-start reset feature, they can ensure that the engine remains running continuously, allowing for more responsive performance when needed.

Environmental conditions: The purpose of the stop-start system is to minimize unnecessary engine revs to improve fuel efficiency and reduce emissions. However, there are some situations, such as extreme heat or cold conditions, where it is best to keep the engine running continuously for comfort or other reasons. The stop-start reset function allows the driver to override the system and keep the engine running continuously under these conditions.

Certain vehicle conditions: Under certain circumstances, the stop-start system may be temporarily disabled for safety or operational reasons.  For example, it may be necessary to temporarily disable the stop-start system during certain towing maneuvers, when using certain vehicle accessories, or when the battery is low. The Stop-Start reset feature provides the driver with a means to deactivate the system if desired.

While the stop-start reset feature provides more control over the stop-start system, it may result in increased fuel consumption and emissions as the engine will be running continuously.  Therefore, it is recommended to use this function with caution and consider the potential impact on fuel efficiency and environmental factors.

What causes auto start-stop not working?

The premise of using the start-stop reset function is that the start-stop system can work normally, but the auto start-stop function of the vehicle will also fail to work normally. Here are some common reasons:

① Battery charging: The auto start-stop system relies on a healthy battery to restart the engine quickly and efficiently.  If the battery is low or weak, the system may disable itself to ensure there is enough power to reliably start the engine. A low battery or a battery that is nearing its end of life may interfere with the use of the auto start-stop function.

② Engine warm-up or cool-down: During the warm-up phase or cooling down after prolonged operation, the system may not allow the engine to reach or maintain the temperature required for optimum performance and efficiency.

③ System failure: The auto start-stop system may also malfunction. This could be due to sensor issues, wiring issues, software glitches, or other technical issues. If the vehicle's computer system detects a malfunction, it may disable the auto start-stop feature as a safety precaution, or until the problem is resolved.

④ Driver behavior or circumstances: Certain driver behavior or conditions may prevent the auto start-stop function from working.  For example, if the driver's seat belt is not buckled, the system may remain inactive. Also, if the climate control system is set to a high cooling or heating mode, the system may not be able to maintain passenger comfort.


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