2017 BMW 650i Gran Coupe AC Isn't Working

Common Causes of AC Malfunctions in Your 2017 BMW 650i Gran Coupe and How to Fix Them

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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 2017 BMW 650i Gran Coupe 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 in a 2017 BMW 650i Gran Coupe?

When your 2017 BMW 650i Gran Coupe's AC isn't functioning properly, start by checking the thermostat settings to ensure they are correctly adjusted for optimal cooling. Next, inspect the air filters, as dirty or clogged filters can significantly hinder airflow and AC performance; replacing them can often resolve the issue. It's also crucial to verify the refrigerant levels, as low levels can lead to warm air blowing from the vents; if you're unsure, consider having a professional assess and recharge the system if necessary. Additionally, examine the AC compressor to confirm it engages when the AC is activated, as a malfunctioning compressor can prevent cooling. Look for any signs of leaks, such as oily residue around hoses and connections, which can indicate refrigerant loss. Finally, check all electrical components related to the AC system to ensure they are secure and functioning properly, as faulty connections can lead to system failures. By systematically following these steps, you can effectively diagnose and potentially resolve AC issues in your BMW, saving time and money on repairs.

What are the common problems that could cause the AC to stop working in a 2017 BMW 650i Gran Coupe?

When the air conditioning system in your 2017 BMW 650i Gran Coupe stops working, it can be a source of discomfort, particularly in warm weather. Several common issues may be at play, starting with low refrigerant levels, which can severely limit the system's cooling capacity. This often points to a leak that needs to be located and repaired. Another frequent problem is a faulty compressor; if the compressor fails, it won't circulate refrigerant effectively, resulting in poor cooling performance. Electrical issues, such as blown fuses or damaged wiring, can also disrupt the AC's operation, leading to complete failure. Additionally, clogged or leaking refrigerant lines can obstruct the flow of refrigerant, while leaks can cause a drop in pressure, further compromising the system's efficiency. A defective condenser may also hinder the cooling process, and thermostat malfunctions can lead to incorrect temperature regulation. By diagnosing and addressing these issues promptly, you can restore your AC's functionality and enjoy a more comfortable ride in your BMW.

How urgent is it to address the non-functioning AC in a 2017 BMW 650i Gran Coupe?

When it comes to a non-functioning AC in your 2017 BMW 650i Gran Coupe, the urgency of repairs should not be underestimated. Driving without air conditioning in hot weather can lead to significant discomfort and even health risks, particularly during the sweltering summer months. Beyond mere comfort, a malfunctioning AC can detract from the overall driving experience, making it less enjoyable and potentially distracting, which could compromise your focus on the road. Moreover, the AC issue might be indicative of a more serious underlying problem within the vehicle's cooling or electrical systems. Ignoring these symptoms could lead to further complications, resulting in more extensive and costly repairs down the line. Therefore, while it may not seem like an immediate emergency, prioritizing the repair of your AC system is essential for maintaining both your comfort and the long-term health of your vehicle.

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