Parts for your 2017 Nissan Navara-Heater tap

Heater Tap on the 2017 Nissan Navara: What You Need to Know

When it comes to the cooling and heating systems in vehicles, the term 'heater tap' might pop up, but you won't find one on a 2017 Nissan Navara. The heater tap, also called a heater control valve, is designed to regulate coolant flow to the heater core, controlling the heat inside the cabin. However, the 2017 Nissan Navara uses a different system that makes a heater tap unnecessary.

The Navara's heating system is designed around electronically controlled mechanisms rather than manual taps or valves. Instead of a heater tap, the Navara relies on a blend door controlled by the climate control unit to regulate airflow and temperature inside the vehicle. This means coolant flow to the heater core is constant, while airflow direction and volume change to adjust the cabin temperature. Because of this system design, the traditional heater tap, which acts as an on/off valve for coolant flow, is not relevant.

So why doesn't Nissan fit a heater tap on the 2017 Navara? It comes down to efficiency, reliability and convenience. Electronic climate control systems are more precise and require fewer mechanical parts. Instead of shutting off coolant flow to the heater core, restricting flow in certain driving conditions or causing slow responses when you turn on the heater, the electronically controlled blend door system can quickly adjust the air temperature and maintain a steady cabin environment. This also reduces wear on mechanical valves and eliminates the risk of valve failure or leaks, which can be a headache in older vehicles that did use heater taps.

Another reason is the complexity of modern cooling systems. The Navara's engine cooling and climate systems are integrated to maintain optimal temperatures for engine performance and passenger comfort. Constant water circulation through the heater core helps regulate engine temperature more evenly, especially during cold starts or stop-start traffic. Having a heater tap opening and closing the heater core flow would interrupt this balancing act, possibly leading to less efficient engine warm-up or hot spots.

Even without a heater tap, the 2017 Nissan Navara's heating and cooling system is designed to be durable and low maintenance. However, like any vehicle, servicing the heater system remains important to keep things running smoothly. Here's a handy guide for owners to understand the basics of heater system maintenance on the Navara - minus the heater tap.

• Coolant checks and changes - The coolant is critical in heating as well as cooling. Nissan recommends regular coolant checks and flushes as per the service schedule. Old or contaminated coolant can lead to corrosion inside the heater core and radiator, reducing heating efficiency and risking leaks.
• Inspect heater core - The heater core acts like a small radiator inside the dash, transferring heat to the cabin air. If you notice weak or no heat, a potential cause is blockage or leaks in the heater core. Though rare, a leaking heater core may cause a sweet smell inside the vehicle or wet mats on the passenger floor.
• Check heater hoses - These hoses carry engine coolant to and from the heater core and should be inspected during servicing. Look out for cracks, swelling or leaks. Replacing worn heater hoses on time prevents potential breakdowns or overheating issues.
• Electronic climate control diagnostics - Since the Navara uses an electronic blend door system, any issues with heating or temperature control are more likely down to actuator motors, sensors or the HVAC control unit itself. If heating problems start popping up, a diagnostic scan at your service centre can pinpoint electrical faults quickly.

Even though the 2017 Navara skips the traditional heater tap, all these components combine to ensure the cabin gets warm quickly and stays comfortable no matter the weather. Routine checks by qualified mechanics as part of scheduled servicing will keep the heating system working flawlessly without fuss.

Interestingly, because there is no heater tap to wear out or block over time, Navara owners usually have fewer headaches related to heating system leaks or failure. The electronically controlled climate setup means far less risk of the heater ceasing to function due to a stuck valve. Still, keeping an eye on coolant quality and hose condition is a smart way to avoid heating and cooling problems down the track.

Ultimately, the 2017 Nissan Navara's lack of a heater tap highlights how automotive heating systems have evolved with technology. It trades in the older mechanical valve system for a more reliable, electronically controlled approach that boosts comfort and minimises maintenance. For Navara owners, this means peace of mind knowing that as long as they stick to their regular service schedule, cabin heating will stay efficient and hassle-free.