What Causes the Key System Fault Display in Infiniti Vehicles?
2 Answers
It may be that the system cannot detect the key, requiring a vehicle restart. If the vehicle fails to start normally, place the mechanical key close to the push-to-start button until the light illuminates, then proceed with a normal start. If the fault persists after starting the vehicle, it is necessary to visit a 4S dealership for key reprogramming. Replacement of Car Keys: Car keys mainly come in two types: mechanical keys and remote keys, both of which can be duplicated or replaced. Replacing a remote key only requires signal matching with the vehicle and does not necessitate changing the car locks. Replacing a mechanical key, however, requires changing all the car locks, which is more costly and varies by vehicle model. Precautions for Replacing Car Keys: The chip inside the car key contains an induction coil that can charge automatically. Different vehicles have different chips, so it is essential to handle the chip carefully during replacement to avoid any mix-ups.
When I first drove my Infiniti, I encountered a key system alarm. After struggling for a while, I found out it was an issue with the door handle sensing antenna. In keyless start systems like this, the door handle sensing area is frequently touched by people, and over time, the circuit board may get water damage or oxidize. Another time, I discovered it was due to interference from a nearby mall's electronic anti-theft device, which confused the car's key signal recognition. Also, don't overlook the key itself—my colleague's key started malfunctioning after being dropped twice, and upon opening it, we found the chip had come loose. The most troublesome issue is a fault in the body control module, which affects the entire vehicle's smart systems and requires a diagnostic computer at the dealership. Remember to try replacing the battery first—this trick solves 60% of the problems.
