Will the data be lost when the auxiliary battery of Jaguar XJL is powered off?

When the auxiliary battery of Jaguar XJL loses power, the data will be lost. The trip computer will be reset, and some data, such as tire pressure monitoring data and fuel consumption data, need to be reset. Usually it will return to normal after driving for a period of time, and for some data, it may return to factory settings. At this time, you need to go to the 4s shop to resume operation with professional instruments. Generally, the computer will be reset about 5- 10 minutes after the power is cut off, and the system time, single mileage, driver's driving habits, vehicle use and other information are zero, but for technical parameters such as throttle.

Advantages of Jaguar XJL auxiliary battery

Power supply to lighting system, doors and windows, entertainment system, etc. When the engine is not running or running at a low speed, power is supplied to various electrical equipment. When there are too many electrical equipment and the power consumption exceeds the power supply capacity of the generator, the auxiliary generator supplies power to various electrical equipment to stabilize the voltage, which is equivalent to a large capacitor, which can absorb the instantaneous overvoltage in the circuit and protect the electrical equipment.