What are the reasons for vehicle authentication failure and failure to start?

[IsabelleAnn]

Engine authentication failure and failure to start may be due to a dead key battery, a malfunction in the one-touch start function, or faults in the body control module or circuit. It is recommended to contact the local 4S store for inspection and repair. The following are related content introductions: 1. Whether it is locked: Determine whether the anti-theft system is locked. Determine whether the starting system is working (whether the starter is running). 2. The starting system is normal: check whether the ignition system is normal; if the starting system is abnormal and turns slowly, check the battery voltage, whether the starter has a fault, and whether the engine has excessive resistance; if the starter does not run, check the starter circuit and electromagnetic switch. Check whether the fuel supply system is normal.