Electronic Ignition Switch (EIS) repair involves diagnosing and addressing issues with the electronic component responsible for managing the vehicle’s ignition system and keyless entry. Skilled technicians use diagnostic tools to identify faults within the EIS, which may include problems with key recognition, immobilizer functions, or electronic communication issues. The repair process typically involves repairing or replacing faulty components within the EIS and, in some cases, reprogramming the system. Ensuring the proper functioning of the EIS is crucial for the vehicle’s ignition and security systems, enabling key functions like starting the engine and controlling access to the vehicle.