Is it serious if a lot of water is spilled on the car back seat?

[LeBrady]

If there is water under the car back seat mat, appropriate measures should be taken based on the severity of the water ingress. Otherwise, it may cause damage to the car's interior and components. The following are symptoms of a water pump failure: 1. Reduced cooling circulation capacity: A damaged water pump can weaken or even stop the cooling circulation, leading to coolant boiling; 2. Coolant leakage near the water pump area: Leaking coolant will leave traces of coolant color on the water pump vent holes, resulting in symptoms like high water temperature due to insufficient coolant; 3. Abnormal noise from the water pump when the engine is running: The abnormal noise may be caused by internal foreign objects or bearing wear.