How to Fix Overheating Issues in Volkswagen Tiguan?

Engine Temperature Issues

Insufficient engine coolant. Solution: Add engine coolant.

Faulty water temperature sensor or water temperature gauge. Solution: Repair the sensor.

Excessive carbon buildup in the combustion chamber. Solution: Clean the combustion chamber.

Generally, vehicles with larger displacement have a quicker rise in water temperature, while smaller displacement vehicles rise more slowly. This is directly related to the engine of the vehicle itself.

When the water temperature inside the engine is low, the combustion of gases will be insufficient, which also affects the lubrication effect of the antifreeze, and of course, the emissions from the rear of the car may exceed standards.

When the temperature is too high, we must check if something is wrong, usually due to coolant leakage.

There are many pipes on the coolant reservoir; if a pipe is indeed broken, we should temporarily bind it with a plastic bag and find a professional to replace it, provided that the engine temperature has come down, otherwise, it can be dangerous. After replacing it, we can add coolant. Another cause of high temperature is a malfunctioning thermostat. When the thermostat fails, the output of water flow decreases, causing the water temperature to rise; at this point, we should go to a professional repair shop.

The last reason for high temperature is an abnormal fan. If we find that the fan is not running, it indicates that the fan's temperature control switch is broken. In this case, we need to open the hood and wait for the temperature to drop before unscrewing the radiator cap.