2011 BMW 535i AC Isn't Working

Common Causes of AC Failure in Your 2011 BMW 535i and How to Restore Cool Comfort

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Reviewed by

Aisha

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 2011 BMW 535i 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.

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RepairPal Certified shops can diagnose and repair your 2011 BMW 535i climate control issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

What are the initial steps to diagnose the AC issue in a 2011 BMW 535i?

To effectively diagnose an AC issue in your 2011 BMW 535i, 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 is low, inspect the AC components for any visible leaks, which can often be identified by oily residue or pooling liquid beneath the vehicle. This initial inspection is crucial, as it can reveal common problems that are relatively easy to address. If you find no obvious issues or if the problem persists after these checks, it may be time to consult a professional BMW mechanic for a more thorough diagnosis. By following these steps, you can efficiently narrow down the potential causes of your AC troubles and determine whether a simple fix is possible or if expert assistance is required.

What are the common causes of AC failure in a 2011 BMW 535i?

When diagnosing AC failure in a 2011 BMW 535i, it's crucial to understand the common problems that can arise within the system. One of the primary culprits is refrigerant issues, which can manifest as either low levels or overcharging, both of which can severely impact cooling efficiency. Additionally, a malfunctioning compressor can prevent the system from circulating refrigerant properly, leading to inadequate cooling. Clogged cabin air filters can restrict airflow, while dirty condenser or evaporator coils can hinder heat exchange, resulting in poor performance. A sluggish blower motor may also contribute to insufficient airflow, making it essential to check its functionality. Furthermore, issues with the blend door actuator can disrupt temperature control, and faulty sensors, such as the evaporator temperature sensor or AC pressure sensor, can lead to incorrect system readings. Lastly, don’t overlook the possibility of electrical issues, such as a bad fuse or relay, which can prevent the AC system from operating altogether. By understanding these common failure modes, DIYers can effectively troubleshoot and address AC issues in their BMW 535i, ensuring a comfortable driving experience.

Related 2011 BMW 535i Problems

Read about related problems experienced by other BMW 535i drivers like you.

Check Engine Light with Code P30FF and Rattle from Engine

Late model BMW 535i turbo engines suffer from waste gate issues which become progressively worse with normal driving and especially with harsh driving conditions. The turbocharger uses exhaust gas to create air pressure which is then forced into the engine. When there is no demand for power, the exhaust gases are released into the exhaust through a waste gate to prevent the turbo from speeding up. “Waste gate rattle” or “Turbo rattle” is a result of excessive movement between the waste gate and the waste gate seat. This is a progressive issue with the following symptoms:

Rattling at cold start

Rattling upon deceleration

Loss of power

Check Engine Light Illumination

Manufacturer Specific OBD trouble code P30FF

Very poor engine performance and MPG

Adjustment of the waste gate actuator can solve the issue, but the issue will return. If adjustment does not correct the issue, the turbocharger waste gate must be rebuilt with new bushings, or the turbocharger must be replaced. BMW has replaced many turbocharger assemblies under warranty to correct this issue.

9 model years affected

Avg Mileage: 1140,000

17 others reported problem

1 comment

BMW 535i crankcase valve replacement needed due to high pitched whistling sound and rough idle

Some BMW 535i owners report experiencing a high-pitched whistling sound and rough idle, which may indicate a failing crankcase valve that requires replacement. Symptoms associated with this issue include choppy idle, blue smoke from the exhaust, significant vacuum at the oil filler cap and dipstick, and the peculiar whistling noise at idle. The PCV (Positive Crankcase Ventilation) valve, essential for evacuating fumes from the crankcase, is often the culprit behind these symptoms. This valve plays a critical role in suctioning blow-by gases out of the crankcase and returning them to the engine for proper combustion. If noise issues are also linked to the crankshaft seals, it is advisable to check the PCV valve first, as it may contribute to the problem. Replacing the crankcase vent valve, part of the PCV system, could resolve the whistling sound and rough idle. Owners are encouraged to have the PCV valve inspected and replaced by a qualified mechanic to ensure the engine functions properly and to prevent further damage.

1 model year affected

Avg Mileage: 187,000

2 others reported problem

1 comment

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