2017 Mercedes-Benz C350e AC Isn't Working

Common Causes of AC Malfunctions in Your 2017 Mercedes-Benz C350e and How to Resolve Them

Find Repair Location
Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
37% chance it's the
Refrigerant Leak
0%
21% chance it's the
Climate Control Electrical Issue
0%
12% chance it's the
AC Compressor
0%
30% chance it's
Something else
The most common reasons a 2017 Mercedes-Benz C350e AC isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.
  • Refrigerant Leak: A refrigerant leak can occur due to damaged hoses, seals, or connections, resulting in decreased cooling efficiency in the air conditioning system.
  • Climate Control Electrical Issue: A faulty climate control module or a blown fuse could be causing the electrical issues in the climate control system.
  • AC Compressor: A faulty AC compressor may be due to a lack of lubrication, electrical issues, or internal mechanical failure, resulting in inadequate cooling performance.
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 non-functioning AC in a 2017 Mercedes-Benz C350e?

When faced with a non-functioning AC in your 2017 Mercedes-Benz C350e, start your diagnostic journey with the simplest solutions before delving into more complex issues. Begin by checking the thermostat settings to ensure it is correctly adjusted, as an incorrect setting can easily be the culprit. Next, inspect the fuse box for any blown fuses related to the AC system; replacing a blown fuse is a straightforward fix that can restore functionality. If the AC still isn’t working, assess the refrigerant levels, as low levels can indicate a leak or other issues that need addressing. A visual inspection of the AC compressor is also essential; look for any signs of damage or wear that could hinder its operation. Additionally, check for any visible leaks in the system, as these can significantly impact performance. Finally, ensure that all electrical connections are secure and free from corrosion, as faulty connections can disrupt the AC's operation. By following these steps methodically, you can effectively diagnose and potentially resolve the AC issues in your vehicle.

What are the common problems that could cause the AC system to fail in a 2017 Mercedes-Benz C350e?

When dealing with the AC system in a 2017 Mercedes-Benz C350e, it's essential to be aware of several common problems that can lead to system failure. One of the most frequent issues is refrigerant leaks, which can significantly diminish cooling performance. If you notice a lack of cold air, checking for leaks should be your first step. Additionally, electrical issues can arise, particularly with components like the compressor or blower motor, which may prevent the system from operating correctly. Another critical component to monitor is the compressor itself; if it fails, the AC will be unable to produce cold air, rendering the system ineffective. Furthermore, a clogged or dirty condenser can restrict airflow, impacting the overall efficiency of the AC system. Lastly, a faulty thermostat can disrupt temperature regulation, leading to inconsistent cooling. By understanding these common problems, you can take proactive measures to maintain your vehicle's AC system and ensure it operates at peak performance.

How urgent is it to repair the non-functioning AC in a 2017 Mercedes-Benz C350e, considering the potential safety risks and further damage?

Addressing the non-functioning AC in your 2017 Mercedes-Benz C350e is not just a matter of comfort; it is a critical safety concern that requires immediate attention. A malfunctioning air conditioning system can lead to significant discomfort while driving, particularly in extreme temperatures, which can distract you and impair your focus on the road. Moreover, the inability to defog or defrost your windows can severely compromise visibility, increasing the risk of accidents. Beyond safety, neglecting AC issues can result in more extensive and costly repairs down the line. A seemingly minor problem may indicate underlying mechanical issues that could escalate if left unaddressed. Therefore, it is essential to prioritize the repair of your vehicle's AC system to ensure both your safety and the longevity of your car. Taking prompt action not only enhances your driving experience but also protects your investment in the vehicle.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.