Parts for your 2015 Subaru Exiga-Heater tap

Heater Tap on the 2015 Subaru Exiga: What You Need to Know

When it comes to the 2015 Subaru Exiga, one part that enthusiasts or DIYers might wonder about is the heater tap. A heater tap, also known as a heater control valve, plays a role in some vehicle cooling systems by controlling the flow of hot engine coolant to the heater core. This directly influences the amount of heat coming through the cabin vents. However, for the 2015 Subaru Exiga, a heater tap is not really part of the setup. Here's why and what that means for owners.

First off, on the 2015 Subaru Exiga, there is no traditional heater tap fitted. Why? Well, Subaru's design philosophy for the cooling and heating system tends to favour a simpler, more integrated approach. Instead of using a separate heater tap to regulate coolant flow, the Subaru Exiga typically uses a blend door or a similar air-mixing system within the climate control unit. This system adjusts the temperature of the air that comes into the cabin by mixing warm air from the heater core with cooler air, rather than throttling the hot coolant itself.

This means that the vehicle's HVAC (Heating, Ventilation, and Air Conditioning) operates by modulating airflow and temperature inside the system, rather than choking or stopping the coolant flow through a valve. The heater core gets a constant flow of hot coolant from the engine's cooling system, which maintains its temperature and is ready to deliver warmth whenever the cabin heater is turned on.

So, what does this mean for the average Subaru Exiga owner? Put simply, you won't find a heater tap to inspect, replace, or maintain on your 2015 Subaru Exiga. This eliminates one potential service hassle but does not mean the heater system requires no upkeep. Like any vehicle, the Subaru Exiga still depends heavily on the quality and condition of its coolant, the radiator, the heater core itself, and the blend doors functioning correctly.

In vehicles with heater taps, these valves can sometimes fail or get stuck, causing problems like no heat in the cabin, inconsistent heating, or leaks. These types of issues will most likely not be tied to the Subaru Exiga's heater system since the heat flow to the heater core is constantly maintained in the Subaru's design. Instead, if heating issues arise, the cause might be related to low coolant levels, air trapped in the cooling system, a faulty thermostat, blocked heater core, or malfunctioning climate control blend doors.

For owners looking after their Subaru Exiga's heating system, it's smart to regularly check and maintain the cooling system as a whole. This covers flushing and replacing the coolant according to Subaru's recommended intervals, inspecting hoses for leaks or damage, and ensuring the thermostat is operating correctly. Also, monitoring the heater blower motor and control settings is important because these regulate airflow through the heater core and into the cabin.

It's worth noting that efforts to repair or improve heater performance in the Exiga will often focus on the electrical blend doors and internal climate control components. These parts govern how warm or cool the air feels when it comes out of the vents, so if the heater tap were used, they'd just be working alongside that valve. Without the valve complicating things, troubleshooting is often more straightforward in Subaru's system.

On rare occasions where Subaru owners might confuse a heater tap, it could be due to aftermarket modifications or incorrect assumptions about the system layout. Aftermarket heater control valves are sometimes installed in older or modified vehicles to allow finer control over heat output. However, for a factory-fitted 2015 Subaru Exiga, the original heating system does not incorporate a heater tap and does not require one.

If someone is servicing their 2015 Subaru Exiga and worried about heater-related parts, the best approach is to focus on the coolant condition, the integrity of the heater core, and the HVAC controls inside the cabin. The climate control unit's blend doors are sometimes prone to wear or damage, causing temperature fluctuation or poor air mixing but these aren't the same as heater taps.

In summary, the takeaway is that the heater tap is simply not a relevant or installed part on the 2015 Subaru Exiga. Instead, Subaru's design keeps the hot coolant flowing constantly to the heater core and relies on air mix controls to adjust how warm or cold the cabin feels. Servicing the heating system means paying attention to the bigger picture with coolant health, heater core condition, and blend door operations.