What are the causes of the high-mounted brake light illumination failure?

[CarlosAnn]

The following is a related introduction to the causes of the high-mounted brake light illumination failure: 1. Fault diagnosis: Based on the high-voltage breakdown of the drive chip and the failure analysis of the breakdown location of the faulty component, it is preliminarily suspected that there was a high-voltage interference level or electrostatic surge voltage in the high-mounted brake light circuit when the fault occurred. The focus of the investigation should be on the source of the impact voltage and the operating conditions. 2. Cause analysis: Using a test vehicle with normally functioning high-mounted brake lights, frequent switching of the rear wiper while the high-mounted brake light was illuminated resulted in the high-mounted brake light malfunctioning after multiple operations, consistent with the fault observed in the road test vehicle.