2020 Mitsubishi Outlander Heater Isn't Working

Common Causes of Heater Issues in Your 2020 Mitsubishi Outlander and How to Resolve Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
31% chance it's the
Heater Blower Motor
0%
18% chance it's the
Heater Blower Motor Resistor
0%
51% chance it's
Something else
The most common reasons a 2020 Mitsubishi Outlander heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
  • Heater Blower Motor: A faulty heater blower motor can result in inadequate airflow or no air circulation in the cabin, affecting the heating system's performance.
  • Heater Blower Motor Resistor: A faulty heater blower motor resistor can cause inconsistent fan speeds or complete failure of the blower motor.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the steps to diagnose the heater issue in a 2020 Mitsubishi Outlander?

When diagnosing a heater issue in a 2020 Mitsubishi Outlander, it's crucial to follow a structured diagnostic approach that prioritizes simpler checks before delving into more complex problems. Begin by checking the thermostat, as a malfunction here can lead to significant heating issues. Next, verify the coolant level; insufficient coolant can hinder the heater's ability to produce warmth, so ensure it is filled to the appropriate level. After that, inspect the heater core for any clogs or leaks, as these can drastically affect heating performance. It's also important to examine the heater control valve to ensure it is functioning correctly, as a malfunctioning valve can block hot coolant from reaching the heater core. Lastly, assess the blower motor to confirm it is operational, since a faulty blower can result in inadequate airflow and heating. By systematically addressing these components, you can effectively diagnose and resolve heater issues in your Mitsubishi Outlander, leading to a more comfortable driving experience.

What are the common problems that could cause the heater to stop working in a 2020 Mitsubishi Outlander?

When your 2020 Mitsubishi Outlander’s heater stops functioning, it can be frustrating, but understanding the common problems can help you diagnose and fix the issue yourself. One of the first things to check is the coolant level; if it's low, the heater won't be able to generate heat effectively. Next, consider the thermostat, as a faulty one can prevent the engine from reaching the right temperature or disrupt coolant flow. Additionally, inspect the heater core for clogs or leaks, which can significantly impact heating performance. If the heater core seems fine, the blower motor may be the culprit; a malfunctioning blower motor can stop warm air from circulating into the cabin. Lastly, ensure there are no air pockets in the cooling system, as these can hinder coolant flow and affect heating. By systematically addressing these potential issues, you can restore your Outlander’s heating system to optimal performance.

How urgent is the repair for the non-functioning heater in a 2020 Mitsubishi Outlander?

When faced with a non-functioning heater in your 2020 Mitsubishi Outlander, the urgency of the repair cannot be overstated, especially during the colder months. A malfunctioning heater not only compromises your comfort but also poses significant safety risks. In winter, the inability to defrost your windshield can severely limit visibility, increasing the likelihood of accidents. Moreover, a working heater is essential for maintaining a safe driving environment, as it prevents fogging and ensures that you can see clearly while on the road. Delaying the repair could lead to more extensive damage to the heating system, resulting in higher repair costs down the line. Therefore, it is crucial to prioritize the repair of your heater to ensure a safe and comfortable driving experience.

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