What are the symptoms of a battery sensor failure?
2 Answers
There are two main symptoms of a battery sensor failure: 1. The body control module detects that the duty cycle of the PWM input signal is less than 4% for 33 seconds. 2. The body control module detects that the duty cycle of the PWM input signal is greater than 96% for 33 seconds. The functions of the battery temperature sensor: 1. By detecting the battery temperature, it determines the charging current of the charger. If the battery temperature is high, the current will increase at the same voltage, leading to overcharging and premature battery damage. If the battery temperature is too low, the discharge current will decrease, potentially affecting startup. 2. By measuring temperature, the ignition system can adjust the system resistance to increase the battery's starting current, ensuring the vehicle starts properly.
Last time I drove to the countryside, I noticed the car was unusually slow to start, and the battery warning light on the dashboard kept flashing, which made me quite anxious. Later, when I took it to the repair shop, the mechanic said the battery sensor was faulty. This device monitors the battery voltage and temperature, and once it malfunctions, it sends incorrect signals to the computer board, leading to insufficient charging. As a result, the battery ages faster, and electronic systems like the air conditioning or lights may malfunction from time to time. In severe cases, the car might even stall midway. If you encounter symptoms like difficulty starting, rapid battery discharge after short trips, or unstable engine operation in daily use, you should be alert. I learned my lesson and now check the battery terminals monthly to ensure they are clean. Addressing issues early helps avoid turning small problems into major expenses.
