How to deal with PEPS failure in cars?

[OSamuel]

PEPS (Passive Entry Passive Start) keyless entry and start system warning light comes on due to faults in the vehicle body receiving module or remote transmitter module. To resolve PEPS failure, you need to visit a 4S shop to refresh the car's computer and clear the error codes.

[McHector]

Sigh, I recently encountered a PEPS failure where the car door wouldn't open no matter what, and the start button didn't respond, which really stressed me out. First, check if it's a key issue—the key battery might be dead, so try replacing it with a new one; it's simple and cheap. If that doesn't work, it could be interference with the car's sensors, like from a nearby wireless charger or strong mobile signals—just move them farther away. If all else fails, reboot the entire system by disconnecting the car battery for a few minutes and reconnecting it; this trick worked for me. For daily maintenance, avoid placing the key near metal boxes or phones, as signals can be disrupted. Lastly, if the problem persists, don't push your luck—head to the 4S shop ASAP to check the fuses or wiring connections. A professional technician can quickly diagnose and fix it with the right tools.