What is the reason for incorrect fuel consumption display after replacing the battery in Nissan Sylphy?
2 Answers
Nissan Sylphy's incorrect fuel consumption display after replacing the battery is mainly caused by the linkage between the fuel level sensor and the float being stuck, preventing the float from moving up and down normally. This results in no change in the sensor, so the fuel gauge needle remains fixed at a certain position. Fuel gauge issue: This should be a fuel gauge problem, unrelated to the battery. It is recommended to go to a 4S shop for inspection. The fuel gauge indication almost entirely depends on the fuel level sensor, so the fuel gauge needle is essentially just an intuitive representation of the fuel level sensor. Solution: If this problem occurs, it indicates an issue with the vehicle's fuel level sensor. Generally, this is due to dirt on the fuel level sensor, which needs to be cleaned promptly.
I've driven a Nissan Sylphy for several years, and after replacing the new battery, the fuel consumption display on the screen became inaccurate. This is usually because the vehicle's engine control unit (ECU) was reset when the battery was disconnected. The ECU is responsible for calculating average fuel consumption and normally records your driving data; after a battery replacement and power interruption, it's like it loses its memory and has to start learning your habits from scratch. Initially, the display may show higher or lower values, especially noticeable during short trips. Additionally, improper operation may cause voltage instability, which could affect the vehicle speed sensor or flow meter—key components for fuel consumption calculation. The Sylphy is quite intelligent; generally, after driving a few hundred kilometers, the data will automatically correct itself. I recommend not rushing to seek repairs. First, drive more to see if it returns to normal. If the inaccuracy persists, check the sensor connections or fuses to prevent hardware damage that could affect driving safety. In short, don't worry; most cases resolve within a few days.
