2013 BMW 135is AC Isn't Working

Common Causes of AC Failure in Your 2013 BMW 135is and How to Restore Cool Comfort

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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 2013 BMW 135is 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 diagnostic steps to take when the AC isn't working in a 2013 BMW 135is?

When your 2013 BMW 135is AC isn't functioning properly, start by checking the refrigerant levels, as low levels are a common cause of AC failure. If the refrigerant is adequate, inspect the compressor for any signs of malfunction, as a faulty compressor can prevent the system from cooling effectively. Next, examine the electrical components, including fuses and wiring, since electrical issues can disrupt the AC's operation. Additionally, ensure that the air filters are clean or replaced if they are clogged, as this can significantly impact airflow and cooling efficiency. Finally, assess the condenser and evaporator for any blockages or damage, as problems in these components can also lead to AC issues. By following this structured diagnostic approach, you can systematically identify and address the root cause of your AC problems, making it easier to restore comfort to your driving experience.

What are the common problems that could cause the AC system to stop working in a 2013 BMW 135is?

When troubleshooting the air conditioning system in a 2013 BMW 135is, it's essential to understand the common problems that could lead to its failure. One of the primary issues is low refrigerant levels, which can significantly impair the system's ability to cool effectively. If the refrigerant is low, it may indicate a leak that needs to be addressed. Another frequent culprit is a faulty compressor; if the compressor isn't functioning properly, it won't circulate the refrigerant, resulting in inadequate cooling. Additionally, electrical issues can disrupt the operation of the AC system, so checking the wiring and fuses is crucial. Clogged or dirty air filters can also restrict airflow, diminishing the system's performance, making regular cleaning or replacement necessary. Lastly, malfunctions in the condenser or evaporator can further complicate the situation, as these components are vital for heat exchange. By systematically checking these areas, you can identify and resolve the issues affecting your BMW's air conditioning system, ensuring a comfortable driving experience. Regular maintenance and prompt attention to these common problems will help keep your AC running smoothly.

How urgent is it to address the non-functioning AC in a 2013 BMW 135is?

Addressing a non-functioning AC in your 2013 BMW 135is is not just a matter of comfort; it is a critical issue that requires immediate attention. Ignoring the symptoms of a malfunctioning air conditioning system can lead to more severe problems down the line, such as increased wear on the engine or electrical system, which could result in costly repairs. Additionally, a faulty AC can compromise your driving experience, especially during hot weather, making it uncomfortable and distracting. If your AC is blowing warm air, it may indicate low refrigerant levels or a failing compressor, both of which can escalate into more significant issues if left unresolved. Therefore, it is essential to diagnose and repair AC problems promptly to maintain the overall health of your vehicle and ensure a safe and pleasant driving experience.

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