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Updated by Shop reviewers on Jun 06, 2022
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How to Care for Your Volkswagen Cars?

The cooling system of your Volkswagen vehicle is critical to the proper operation of your vehicle. The cooling system keeps your engine at the proper temperature by circulating coolant through the engine, picking up heat, and transferring it via the radiator, where it is cooled with air. The coolant is then routed through a thermostat valve to regulate flow and a temperature sensor to operate external air cooling fans.

Volkswagen cooling systems are made up of three major components: the VW water pump, VW hoses, and VW thermostat, radiator, and sensors.

Water Pump for Volkswagen

The VW water pump is in charge of the pumping function of the VW cooling system, which keeps the coolant mixture flowing. The standard VW water pump is gear or belt-driven, but in certain other models, a secondary electric water pump is utilized to increase the cooling and flow of the coolant mixture. The drive belt, also known as the timing belt on most modern automobiles, is an essential component of the pump's operation. On older versions, however, the pump and belt are external and run off the main crankshaft pulley through a "V" of flat belt.

VW water pump maintenance is performed along with coolant replacement, drive belt replacement, and tension adjustment (external type). When repairing the timing belt and tensioner, it is always necessary to replace the timing belt-driven pumps.

Hoses for Volkswagen

The Volkswagen cooling system is comprised of several pipes, including the Volkswagen radiator hose, control valves, the heater core, and the expansion tank. And because these materials are regularly utilized and are exposed to hot coolant, they degrade quickly and must be replaced more frequently.

The maintenance of cooling system pipes comprises replacing all hoses on a regular basis, replacing coolant, and replacing any unplugged or leaking sections. It is recommended that all hoses be inspected at least twice a year for abrasions, flexibility, cracks, and leaks. Of course, whenever coolant is cleansed for replacement or even during engine repairs, hoses must be replaced. Because of leakage or clogging, radiator hoses, expansion tanks, heater cores, and control valves are frequently changed. However, because they know everything there is to know about Volkswagen components, it is critical that a VW specialist be contacted to check the quality of these parts.
VW Radiator, Thermostat, and Sensors

Temperature controls for Volkswagen's cooling system include all coolant temperature sensors, the radiator or expansion tank cap, the thermostat, the cooling fan(s), and the fan clutch. These cooling components operate independently of the engine yet retain control over engine cooling by providing control signals to VW's electrical systems.

The thermostat is a spring-loaded valve that opens and shuts dependent on the temperature of the coolant flowing through it. When you get a high-temperature reading followed by a decrease to normal temperature or a continually low temperature, you know something is wrong with your thermostat. This usually suggests a stuck thermostat. Unfortunately, there are additional ailments that might produce these symptoms, and if you are unsure, you should have a VW expert technician examine them.

Similarly, the radiator or expansion tank cap is a spring-loaded valve that responds to system pressure. Its purpose is to keep the system coolant level at specified pressures. To ensure optimal performance, it should always be replaced with an exact replacement cap with the same pressure setting.

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