2017 BMW 640i XDrive Gran Coupe AC Isn't Working

Troubleshooting Common AC Issues in Your 2017 BMW 640i xDrive Gran Coupe and How to Restore 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 2017 BMW 640i xDrive 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 steps to diagnose the AC issue in a 2017 BMW 640i xDrive Gran Coupe?

When diagnosing the AC issue in a 2017 BMW 640i xDrive Gran Coupe, start with the simplest checks to avoid unnecessary complications. Begin by inspecting the air filters; clean or replace them if they are clogged, as this can significantly affect airflow and cooling efficiency. Next, verify the refrigerant levels in the system, as low refrigerant can lead to inadequate cooling. If the refrigerant is sufficient, examine the AC compressor for any signs of damage or wear, as a malfunctioning compressor can hinder the entire system's performance. Additionally, test the thermostat to ensure it is regulating the temperature correctly. Look for any visible leaks around the AC components, as these can indicate a more serious issue. Finally, utilize a diagnostic tool to scan for error codes that may provide insight into underlying problems. By following these steps, you can systematically identify and address the AC issues in your BMW, ensuring a more efficient and effective repair process.

What are the common problems that could cause the AC to stop working in a 2017 BMW 640i xDrive Gran Coupe?

When the air conditioning system in your 2017 BMW 640i xDrive Gran Coupe fails to deliver cool air, several common issues may be at play. Start by checking the refrigerant levels, as low refrigerant can significantly hinder the system's cooling efficiency. If the refrigerant is adequate, the next step is to inspect the compressor; a faulty compressor can prevent the AC from functioning altogether. Additionally, electrical problems, such as blown fuses or damaged wiring, can disrupt the system's operation, so it's wise to examine these components as well. Another potential culprit is a clogged or leaking condenser, which can severely impact the AC's ability to cool the air. Lastly, consider the thermostat; if it is malfunctioning, it may not regulate the temperature properly, leading to inadequate cooling. By systematically checking these common issues, you can diagnose the problem more effectively and determine whether a professional repair is necessary.

How urgent is it to address the AC failure in my 2017 BMW 640i xDrive Gran Coupe?

Addressing an AC failure in your 2017 BMW 640i xDrive Gran Coupe is crucial for several reasons. First and foremost, a functioning air conditioning system is vital for maintaining a comfortable driving environment, particularly during hot weather or long journeys. Without it, both you and your passengers may experience discomfort, which can detract from the overall driving experience. Moreover, a malfunctioning AC can lead to fogging on the windshield, significantly impairing visibility and posing a safety risk while driving. This makes it essential to resolve any AC issues promptly to ensure clear visibility and safe driving conditions. Additionally, neglecting an AC failure can result in further damage to the system, potentially leading to more extensive and costly repairs in the future. Therefore, it is advisable to seek a professional inspection to accurately diagnose the problem and understand the urgency of the necessary repairs. By addressing the AC failure quickly, you can enhance your comfort, ensure safety, and prevent additional complications, ultimately saving time and money in the long run.

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2017 BMW 640i xDrive Gran Coupe AC Issues & Repair Costs