Parts for your 2020 Subaru Legacy-Heater tap

Heater Tap Information for the 2020 Subaru Legacy

The 2020 Subaru Legacy does not use a traditional heater tap in its heating and cooling system. Rather than having a manual heater tap, modern vehicles like the Legacy employ electronically controlled valves and the vehicle's climate control system to regulate the flow of coolant to the heater core. This design offers more precise control over cabin temperature and improves overall efficiency.

In older vehicle models, a heater tap was often a simple mechanical valve that controlled the flow of hot engine coolant into the heater core, which in turn warmed the air blown into the cabin. The heater tap could be manually opened or closed by the driver, allowing them to regulate the heat output. Over time, however, this method fell out of favour because it lacked the precision and convenience of electronic climate control systems.

Subaru's approach in the 2020 Legacy involves an electronically controlled heater control valve. This valve is managed by the vehicle's climate control module, which adjusts heater output based on settings selected by the driver and sensors measuring internal and external temperatures. Essentially, the heater control valve replaces the manual heater tap, offering automatic regulation of coolant flow and enhancing passenger comfort.

Because of this, a traditional heater tap is not fitted to the 2020 Legacy. The system relies on solenoid-operated valves or stepper motor actuated valves to regulate coolant flow precisely. This setup allows for staged modulation of heat rather than an on/off style control. With this in mind, there is no need for a manual heater tap or separate user intervention aside from using the temperature control knobs or touchscreen settings.

In practical terms for vehicle owners and mechanics working on the 2020 Subaru Legacy, maintenance or replacement tasks involving a heater tap simply do not apply. Instead, attention is given to the heater control valve components, along with the heater core, thermostat, coolant hoses, and the broader cooling system.

When servicing the heating system on a 2020 Legacy, technicians focus on ensuring the electronic heater valve is functioning correctly along with verifying coolant levels and condition. Symptoms such as lack of heat, inconsistent cabin temperature, or heater core leaks might prompt inspection or replacement of related components.

Should the heater control valve fail, it may show signs such as coolant leaks around the valve or the inability to regulate heat properly. In such cases, diagnosis typically involves confirming electrical inputs to the valve and testing its mechanical movement. Replacement parts for the electronic valve are readily available and installation generally requires flushing part of the cooling system, draining coolant, and disconnecting associated hoses.

Overall, the absence of a traditional heater tap in the 2020 Subaru Legacy reflects a shift towards more advanced and reliable climate control systems. These features provide better comfort levels and greater durability with less driver maintenance required throughout the vehicle's lifespan.