2017 Subaru Impreza Is Overheating

Common Causes of Overheating in Your 2017 Subaru Impreza and How to Resolve Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
24% chance it's the
Thermostat
0%
41% chance it's the
Coolant leak (water pump, radiator, hose etc.)
0%
32% chance it's the
Radiator Fan
0%
3% chance it's
Something else
The most common reasons a 2017 Subaru Impreza is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat.
  • Thermostat: A faulty thermostat can cause the engine to overheat or run too cool by failing to regulate the flow of coolant properly.
  • Coolant leak (water pump, radiator, hose etc.): A coolant leak can occur due to a damaged hose, a failing water pump, or a compromised radiator, leading to loss of coolant and potential engine overheating.
  • Radiator Fan: A faulty radiator fan can lead to engine overheating due to insufficient airflow over the radiator.
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 initial diagnostic steps to take for a 2017 Subaru Impreza that is overheating?

When your 2017 Subaru Impreza is experiencing overheating, it's essential to approach the diagnosis methodically. Start by checking the coolant level in both the radiator and the reservoir, as low coolant can be a straightforward cause of overheating. If the coolant is adequate, inspect the cooling system for any visible leaks, particularly around hoses, the radiator, and the water pump, since leaks can lead to a significant loss of coolant. Next, examine the radiator cap for any signs of damage; a faulty cap can disrupt the system's pressure and contribute to overheating. After these checks, ensure that the cooling fans are operational, as they are crucial for maintaining airflow through the radiator. If the fans are working, proceed to test the thermostat to confirm it opens and closes at the correct temperature, as a malfunctioning thermostat can prevent proper coolant flow. Finally, inspect the water pump for leaks or signs of failure, as an ineffective water pump can hinder coolant circulation. By following these steps, you can effectively identify and address the overheating issue in your Subaru Impreza.

What are the common causes of overheating in a 2017 Subaru Impreza?

When diagnosing overheating issues in a 2017 Subaru Impreza, it's crucial to consider several common problems that can disrupt the vehicle's cooling system. One of the primary culprits is low coolant levels, which can occur due to evaporation or leaks, making it essential to regularly check and top off the coolant to maintain optimal engine temperature. Additionally, cooling system leaks can arise from worn hoses, a damaged radiator, or a failing water pump, all of which can lead to significant coolant loss and subsequent overheating. A faulty thermostat is another frequent issue, as it may fail to open or close properly, hindering the flow of coolant and causing the engine to overheat. Clogged radiators can also impede coolant circulation, so it's advisable to inspect and clean the radiator if necessary. Furthermore, problems with the cooling fan, such as a malfunctioning motor or relay, can prevent adequate airflow, exacerbating overheating issues. Lastly, a failing water pump can severely impact coolant circulation, making it vital to ensure this component is functioning correctly. By understanding these common causes, DIY enthusiasts can take proactive steps to maintain their Subaru Impreza's cooling system and prevent overheating.

How urgent is it to address the overheating issue in my 2017 Subaru Impreza?

Addressing the overheating issue in your 2017 Subaru Impreza is of utmost urgency, as neglecting this problem can lead to severe and costly consequences. Overheating can cause significant engine damage, including warped cylinder heads and blown head gaskets, which not only compromise your vehicle's performance but also result in expensive repairs. Furthermore, if the overheating persists, it can lead to a complete engine failure, leaving you stranded and facing even higher repair costs. Additionally, the impact of overheating extends beyond the engine; it can damage critical components such as the radiator, water pump, and thermostat, further complicating the situation. Therefore, it is essential to diagnose and address any overheating symptoms promptly to safeguard your vehicle's longevity and performance. Taking immediate action not only prevents potential breakdowns but also ensures a safer driving experience, making it imperative for DIY enthusiasts to prioritize this issue.

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2017 Subaru Impreza Overheating: Causes & Repair Costs