What to Do When the Start-Stop Function Fails After Replacing a New Battery?
2 Answers
It is recommended to use the battery for a while longer until it has sufficient charge to trigger the start-stop function. Here are some precautions regarding new batteries: 1. Control the charging time: Generally, batteries are charged overnight, with an average charging time of about 8 hours. If the battery is shallowly discharged (short driving distance after charging), it will charge quickly. Continuing to charge may lead to overcharging, causing water loss, overheating, and reduced battery life. 2. Avoid storing the battery in a discharged state: A discharged state occurs when the battery is not charged promptly after use. In this state, sulfation is likely to occur, with lead sulfate crystals forming on the plates, blocking ion channels and resulting in insufficient charging and reduced battery capacity. The longer the battery remains unused in a discharged state, the more severe the damage. If the battery is not in use, it should be charged once a month to extend its lifespan. 3. Regular inspection is necessary: During use, if the electric vehicle's range suddenly drops by several dozen kilometers in a short period, it is likely that at least one battery in the pack has issues such as broken grids, softened plates, or shedding of active material from the plates, leading to a short circuit. In such cases, promptly visit a professional battery repair facility for inspection, repair, or reconfiguration.
I just got a new battery replaced last week, and the start-stop function stopped working. It's really frustrating. At first, I thought it was the battery itself, but a friend reminded me that the system might need a reset. The start-stop system is quite picky about new batteries and requires the car's computer to relearn. I tried turning off the engine, waiting for ten minutes before restarting, and even reconnecting the battery terminals. Unfortunately, it didn’t work, so I had to drive to the 4S shop for a check. The technician said some car models require programming with a tool to reactivate the start-stop function after a battery replacement. Also, note that temperature affects it—if it’s too hot in the car in summer or too cold in winter, the start-stop function may temporarily pause, which isn’t a malfunction. Spending a little money to let professionals handle it is the most worry-free option, after all, driving safety is the top priority.
