What could be the reason for the sudden disappearance of BMW's head-up display?

[SanRichard]

The sudden disappearance of BMW's head-up display is most likely due to sensor or wiring issues. The head-up display projects important information onto the holographic semi-mirror of the windshield, allowing the driver to see crucial information without having to look down. More relevant information is as follows: 1. Application: The HUD (Head-Up Display), also known as a flat-panel display, is widely used in military aircraft as a flight assistance instrument. As the name suggests, "head-up"—through the principle of optical reflection, important information is projected onto the glass, eliminating the need for the driver to look down. 2. Introduction: The HUD head-up display originated from the optical sight of fighter jets, first appearing during World War I and becoming widely used by World War II. Nowadays, more and more car models are equipped with HUD head-up display functionality. The most important role of the HUD head-up display is to ensure the driver's stability, allowing them to focus more on observing road conditions.