Parts for your 2017 Mitsubishi Lancer-Heater tap

Understanding the Heater Tap on the 2017 Mitsubishi Lancer

The 2017 Mitsubishi Lancer is a popular compact car known for its reliability and straightforward engineering. When it comes to the vehicle's heating system, many enthusiasts and DIY mechanics might wonder about the presence or role of a heater tap. A heater tap is a valve traditionally used to control the flow of hot engine coolant into the heater core, allowing occupants to regulate the temperature inside the cabin. However, after consulting various technical sources, workshop manuals, and Mitsubishi's official documentation, it's clear that the 2017 Mitsubishi Lancer does not use a heater tap as part of its heating system.

So why is there no heater tap on this model? Modern vehicles like the 2017 Lancer have evolved away from simple manual valves. Instead, the heating system is controlled by the vehicle's climate control system which generally involves a blend door or a similar mechanism inside the HVAC (heating, ventilation, and air conditioning) unit. The blend door adjusts the mixture of hot and cold air blown into the cabin, giving occupants precise temperature control without needing to physically stop or start the flow of coolant through the heater core.

In older car models, the heater tap would physically shut off the coolant flow into the heater core to stop heat from entering the cabin. While this was a simple mechanical solution, it could cause issues such as uneven heating or engine overheating if the valve was left closed for too long. Cooling the heater core with the engine still running can also cause a temperature imbalance in the cooling system.

By eliminating the heater tap, the 2017 Lancer avoids these potential problems and offers a more efficient and consistent way to manage cabin temperature. The controlled flow of coolant through the heater core remains constant, and temperature changes are made by electronically adjusting airflow. This not only improves passenger comfort but also simplifies the engine's cooling system design.

From a servicing perspective, this means owners and mechanics do not need to worry about the heater tap as a separate component. There is no heater tap valve to replace, maintain, or troubleshoot. Instead, focus should be placed on the proper maintenance of the entire cooling system including:

• Thermostat operation and replacement
• Coolant quality and regular flushing
• Heater core condition, ensuring it is free from clogging or leaks
• HVAC system checks, particularly the operation of blend doors and actuators
• Ensuring heater hoses are not damaged or blocked

Proper coolant maintenance is critical because coolant flows continuously through the heater core regardless of the temperature setting inside the car. A clean and properly maintained cooling system ensures the heater core receives the right amount of hot coolant to provide effective heating when needed.

So while the heater tap is a well-known part in older vehicles or certain models with manual heating systems, it is simply not relevant in the 2017 Mitsubishi Lancer. This design choice helps keep the heating system simple from a mechanical perspective while providing smoother temperature control dictated by modern HVAC electronics.

If there are any heating issues in the 2017 Lancer, such as lack of heat or uneven heating, it's usually best to have a qualified mechanic inspect the cooling system, thermostat, heater core, and the HVAC controls. Since no heater tap valve exists to adjust, the cause will likely be related to coolant flow problems, blend door malfunctions, or thermostat faults rather than a mechanical valve failure.

In short, the absence of a heater tap means fewer components requiring attention during regular servicing and reduces the chance of leaks or mechanical failure in the heating circuit. For owners wanting to keep their 2017 Mitsubishi Lancer's heating system in top shape, sticking to scheduled coolant flushes and system checks is the most important maintenance. This ensures the system runs smoothly and the cabin stays warm and comfortable through the chilly Aussie winters.