Why does the hood of the Tiguan open automatically?

[VanJeremiah]

The reasons for the automatic opening of the Tiguan's hood are as follows: 1. Insufficient coolant: Prolonged water circulation during engine operation can cause the coolant in the engine cooling system to gradually deplete, leading to a lack of water in the radiator. If the owner fails to promptly check and replenish the coolant, this can easily cause the engine to overheat, resulting in the hood automatically popping open. 2. Cooling fan malfunction: Damage to the cooling fan or short-circuiting of the wiring can cause the fan to stop working or operate at a slow speed. This prevents the engine's heat from dissipating, naturally causing the engine temperature to rise and the hood to automatically pop open.