2017 Kia Forte Heater Isn't Working

Common Causes of Heater Issues in Your 2017 Kia Forte 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 2017 Kia Forte 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 why the heater isn't working in a 2017 Kia Forte?

When diagnosing why the heater isn't working in your 2017 Kia Forte, it's essential to adopt a systematic approach that begins with the simplest solutions before moving on to more complex issues. Start by checking the thermostat to ensure it is set correctly and functioning properly, as a malfunction here can significantly impact heating performance. Next, inspect the coolant level in the radiator; low coolant can hinder the heater's ability to generate warmth. If these initial checks do not resolve the issue, examine the heater core for any signs of clogs or leaks, as a damaged heater core can prevent heat from circulating into the cabin. Additionally, test the heater controls to confirm they are operational, since faulty controls can impede the heater's functionality. Don't forget to check the blower motor, as a malfunctioning motor can restrict airflow, even if the heater is producing heat. Finally, ensure that the blend door is functioning correctly, as a stuck door can block hot air from entering the cabin. By following this diagnostic approach, you can effectively identify and address the underlying issues affecting your vehicle's heating system.

What are the common problems that could cause the heater to stop working in a 2017 Kia Forte?

When your heater stops working in a 2017 Kia Forte, several common problems may be at play. Start by checking the thermostat, as a malfunction can prevent the engine from reaching the necessary temperature for heating. Next, inspect the coolant system for leaks, which can hinder warm coolant from circulating through the heater core. If the coolant is in good condition, the heater core itself may be clogged or malfunctioning, blocking the flow of hot coolant. Additionally, ensure that the blower motor is functioning properly; if it fails, warm air won't be distributed into the cabin. Lastly, consider the possibility of air pockets in the cooling system, which can disrupt coolant flow and affect heating efficiency. By systematically examining these areas, you can identify and potentially resolve the issue with your heater.

How urgent is it to address the non-functioning heater in a 2017 Kia Forte?

When your 2017 Kia Forte's heater stops functioning, the urgency to address the problem cannot be overstated. A malfunctioning heater not only leads to discomfort during cold weather but also poses significant safety risks. Without a working heater, your vehicle's ability to defrost the windshield is compromised, which can severely limit visibility and increase the likelihood of accidents. Moreover, delaying repairs can exacerbate the issue, potentially leading to more extensive damage to the heating system and resulting in higher repair costs down the line. Therefore, it is crucial to prioritize the inspection and repair of your heater to ensure a safe and comfortable driving experience, especially in colder climates. Taking prompt action not only enhances your comfort but also safeguards your vehicle's overall functionality and your safety on the road.

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2017 Kia Forte Heater Problems: Causes & Solutions