2017 Mercedes-Benz Sprinter 3500 AC Isn't Working

Common Causes of AC Malfunctions in Your 2017 Mercedes-Benz Sprinter 3500 and How to Fix Them

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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 Sprinter 3500 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 when the AC isn't working on a 2017 Mercedes-Benz Sprinter 3500?

When faced with an AC malfunction in your 2017 Mercedes-Benz Sprinter 3500, begin your troubleshooting by checking the thermostat settings to ensure they are correctly adjusted. A simple misconfiguration can often be the culprit behind an unresponsive system. Next, inspect the air filters; dirty or clogged filters can significantly hinder airflow and cooling efficiency, so replacing them may restore functionality. Following this, examine the refrigerant levels using a gauge, as low levels can lead to inadequate cooling. If you suspect a refrigerant leak, look for oily residues around connections and hoses, as these can indicate where the system is losing refrigerant. Additionally, test the compressor to confirm it engages when the AC is activated; a malfunctioning compressor may require repair or replacement. Lastly, check all electrical connections related to the AC system for security and signs of corrosion, as faulty connections can disrupt operation. By systematically addressing these areas, 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 Sprinter 3500?

When diagnosing AC system issues in a 2017 Mercedes-Benz Sprinter 3500, it's crucial to be aware of several common problems that can lead to system failure. One of the primary culprits 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. Another critical component is the compressor; if it malfunctions, the entire system's ability to cool the air is compromised. Electrical issues, such as faulty wiring or sensors, can also disrupt the AC's functionality, so inspecting these components is essential. Additionally, blockages in the orifice tube or expansion valve can restrict refrigerant flow, leading to inadequate cooling. Don't overlook the condenser, as damage or blockages here can hinder heat exchange, further affecting performance. Lastly, a malfunctioning blower motor can result in poor airflow through the vents, making it vital to ensure this component is working correctly. By understanding these common problems, DIYers can take proactive steps to maintain and repair their AC system, ensuring optimal performance and comfort in their vehicle.

How urgent is it to repair the non-functioning AC in a 2017 Mercedes-Benz Sprinter 3500?

Repairing the non-functioning AC in a 2017 Mercedes-Benz Sprinter 3500 is an urgent matter that should not be overlooked. The discomfort caused by a malfunctioning AC can significantly affect passengers, especially during long journeys or in extreme weather conditions, leading to potential health risks. Moreover, the absence of proper ventilation can result in foggy windows, compromising visibility and increasing the likelihood of accidents. Additionally, a faulty AC system can place undue strain on the vehicle's engine, risking overheating and further mechanical failures that could lead to costly repairs. Lastly, maintaining a fully operational AC system is essential for preserving the vehicle's resale value; potential buyers are likely to be deterred by a neglected AC, viewing it as a sign of poor maintenance. Therefore, addressing AC issues promptly is crucial for ensuring safety, comfort, and the longevity of your vehicle.

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