2014 Mercedes-Benz CLS63 AMG AC Isn't Working

Common Causes of AC Issues in Your 2014 Mercedes-Benz CLS63 AMG and How to Resolve Them

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Reviewed by

Devin Cabugcal

Written by RepairPal Car Genius

Updated January 14, 2025

37% chance it's the

Refrigerant Leak

21% chance it's the

Climate Control Electrical Issue

12% chance it's the

AC Compressor

30% chance it's

Something else

The most common reasons a 2014 Mercedes-Benz CLS63 AMG 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 short circuit in the wiring can disrupt the electrical signals needed for proper operation of 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 best Mercedes-Benz repair shops?

RepairPal Certified shops can diagnose and repair your 2014 Mercedes-Benz CLS63 AMG climate control issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

How urgent is it to address the non-functioning AC in a 2014 Mercedes-Benz CLS63 AMG?

Addressing a non-functioning AC in your 2014 Mercedes-Benz CLS63 AMG is not just a matter of comfort; it is a critical issue that requires immediate attention. Driving without a functioning air conditioning system can lead to significant discomfort, especially during hot weather, which can distract you from the road and impair your driving ability. Moreover, neglecting this problem can exacerbate existing issues, potentially leading to more severe damage and costly repairs down the line. For instance, a malfunctioning AC may indicate underlying problems such as refrigerant leaks or electrical faults that, if left unaddressed, could compromise the entire system. Timely intervention not only enhances your driving experience but also helps maintain the vehicle's overall performance and resale value. Therefore, it is essential to prioritize the repair of your AC system to ensure both your comfort and the longevity of your Mercedes-Benz CLS63 AMG.

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