Why does the Volkswagen Tiguan hood open by itself?

[McJude]

Introduction to the reasons why the Volkswagen Tiguan hood pops open by itself: 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 inspect, detect, and replenish the coolant, this can easily cause the engine to overheat, and the hood will automatically pop open. 2. Cooling fan malfunction: Damage to the cooling fan or a short circuit in the wiring can cause the fan to operate improperly or at a slow speed, preventing the engine's heat from dissipating. As a result, the engine temperature will naturally rise, and the hood will automatically pop open. 3. Thermostat failure: The thermostat is a device that controls the flow path of the coolant. If it becomes stuck or fails, the engine's large and small circulation will inevitably be affected, making it impossible to effectively dissipate the engine's heat. 4. Water pump failure: If the water pump malfunctions, the water that conducts heat in the engine cannot circulate and renew in time. Consequently, the water temperature will rise rapidly after the engine starts, and the water temperature warning light on the dashboard will also illuminate.