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What Causes the Sudden Failure of Magotan's Auto Start-Stop Function?

3 Answers

AndrewFitz

07/29/25 6:22pm

Here are the reasons why the Magotan's auto start-stop function suddenly stops working: 1. The battery charge is too low or the voltage is insufficient. During engine shutdown, components like the engine cooling fan and air conditioning require power supply to operate. 2. The engine coolant temperature is either too high or too low. 3. The vehicle has not reached the state set by the driver. When the air conditioning is on in summer, if the engine is turned off, the air conditioning compressor stops working. If the difference between the in-car temperature and the set temperature is too large, the auto start-stop system will restart the engine. 4. The start-stop function is turned off.

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EmilioRose

08/14/25 11:06am

Last time I drove my Magotan, I also encountered the start-stop system suddenly failing, which was really annoying. The most common reason is insufficient battery power. The automatic start-stop system requires ample electricity to function. If the vehicle is frequently used for short trips or left unused for long periods, battery aging can easily trigger the protection mechanism, automatically disabling the function. Another reason is that the engine coolant temperature hasn't reached the required level, especially during cold starts when the start-stop won't activate. Large temperature differences between inside and outside the car or running the air conditioning too aggressively can also cause the system to detect extra energy consumption and temporarily pause the start-stop function. I usually check the battery status display first or let the car sit for half an hour before trying again. If the problem persists, it's necessary to go to the shop to read the fault codes and check the wiring or control module, as Volkswagen's system is quite sensitive to parameters.

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VonDaniel

10/14/25 5:42am

From a technical perspective, the failure of the Magotan's auto start-stop function hinges on system self-check conditions. My understanding is that multiple parameters must be simultaneously met: engine temperature between 80-100°C, battery charge above 75%, sufficient brake vacuum pressure, seatbelt fastened and doors closed. If the difference between AC set temperature and actual cabin temperature exceeds 5°C, or battery voltage drops below 12V, the start-stop will be interrupted. Sensor failures (like brake pressure detectors) or control module false alarms can also cause sudden malfunctions. For daily maintenance, it's advisable to regularly check real-time data streams with an OBD scanner, and prevent minor oversights like loose battery terminals or unupgraded infotainment systems from affecting functionality.

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