Mazda 3 low battery warning triggered by doors or radio usage for over 10 minutes with no solution provided on Mazda 3

Some Mazda 3 owners report experiencing a low battery warning triggered by leaving the doors open while cleaning for about 30 minutes or by using the radio and charging devices without the engine running for an extended period. This warning is a built-in feature that typically resolves itself after 30 minutes when the battery enters 'sleep mode.' However, if the warning persists, it may indicate that the vehicle's electrical control area network has entered "Sleep Mode" due to 30 cumulative minutes without the engine running, leading to the warning message and alarm sound. To clear this warning, some owners find that starting the engine and idling or driving for at least 5 minutes can be effective. Mazda has also issued a Service Alert recommending that the engine be allowed to idle for a minimum of 5 minutes before receiving the vehicle to prevent the warning message from appearing. To avoid the low battery warning, some owners suggest running the engine every other day and driving the car for about 20 minutes or more three times a week to ensure the alternator charges the battery adequately.