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What are the reasons why the auto start-stop function is not working?

2 Answers

Vernon

07/24/25 5:49am

The reasons why the auto start-stop function is not working are: 1. The car has just started, and the engine is not heated; 2. Insufficient battery power; 3. Accidentally pressing the auto start-stop button, causing the system to shut down; 4. For manual transmission cars, the actions of shifting to neutral, pulling the handbrake, and releasing the clutch have not been completed. The auto start-stop system automatically shuts off the engine when the vehicle comes to a temporary stop during driving and automatically restarts the engine when it's time to move forward again. The method to use the auto start-stop function is: 1. Turn on the start-stop function; 2. Press the off button next to the start button, and the indicator light should not be on; 3. Shift to D gear, step on the brake, and the engine will automatically shut off; 4. Release the brake to automatically start the engine.

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DeJosie

08/11/25 1:33am

Last time my auto start-stop system stopped working, which was quite annoying since it's supposed to save fuel and be eco-friendly. Common issues include low battery charge, especially in older cars with battery degradation – the system automatically disables itself when detecting unstable voltage to prevent restart failures. The same happens when the AC or heater is running at full blast, as the engine must keep running to support climate control. External conditions also play a big role; extreme temperatures or parking on steep hills may pause the system for safety. Loose seatbelts or unsecured doors might trigger protective mechanisms too. Software glitches or sensor misreadings can make the system 'forget' its function – sometimes restarting the car or running diagnostics helps. Remember, the auto start-stop delays activation for a few minutes after cold starts to allow engine warm-up, so don't jump to conclusions about malfunctions. If it happens frequently, check battery health or visit a professional shop to scan for trouble codes – ignoring small issues may lead to costly repairs later.

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