2012 BMW 335is AC Isn't Working

Common Causes of AC Failure in Your 2012 BMW 335is and How to Restore Cool Comfort

Find Repair Location
Reviewed by
Devin Cabugcal
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 2012 BMW 335is 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 initial steps to diagnose the AC issue in a 2012 BMW 335is?

To effectively diagnose the AC issue in your 2012 BMW 335is, start by checking the refrigerant levels, as low levels can significantly impact cooling performance and may indicate a leak in the system. If the refrigerant appears low, inspect for any visible signs of a refrigerant leak, which is a common problem in these vehicles. Next, assess the electrical climate control system, as electrical malfunctions can also lead to AC failures. Finally, examine the air conditioning compressor, as issues with this component can prevent the AC from functioning properly. By following this diagnostic approach, you can systematically identify and address the root cause of your AC problems, making it easier to implement the necessary repairs.

What are the common problems that could cause the AC to stop working in a 2012 BMW 335is?

When dealing with a malfunctioning air conditioning system in a 2012 BMW 335is, it's crucial to understand the common problems that could be at play. One of the primary culprits is low refrigerant levels, which can result from leaks or a lack of regular recharging. If you notice that your AC isn't blowing cold air, checking the refrigerant level should be your first step. Another frequent issue is a faulty compressor; if the compressor isn't functioning correctly, it can hinder the system's ability to cool the air effectively. Additionally, electrical problems, such as issues with the climate control system, can disrupt the AC's operation, so inspecting the electrical connections is advisable. Clogged or dirty air filters can also impede airflow, leading to reduced AC performance, making it essential to replace or clean these filters regularly. Lastly, problems with the condenser or evaporator can further complicate matters, so keeping an eye on these components is vital. By addressing these common issues, you can restore your BMW's AC system to optimal performance, ensuring comfort during those hot summer months.

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.

2012 BMW 335is AC Not Working: Causes & Repair Costs