2016 BMW 428i Gran Coupe AC Isn't Working

Common Causes of AC Malfunctions in Your 2016 BMW 428i Gran Coupe and How to Fix Them

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Reviewed by

Bo Fader

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 2016 BMW 428i 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 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 2016 BMW 428i Gran Coupe climate control issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

What are the common problems that could cause the AC to stop working in a 2016 BMW 428i Gran Coupe?

When dealing with AC problems in a 2016 BMW 428i Gran Coupe, it's essential to understand the various common issues that could be at play. One of the primary culprits is a refrigerant leak, which can lead to insufficient cooling if the refrigerant levels drop too low. Additionally, electrical issues, such as a faulty compressor or malfunctioning climate control unit, can disrupt the AC's operation. A malfunctioning air conditioning compressor is another frequent issue, as it is responsible for circulating refrigerant throughout the system. If the blower motor fails, it can significantly impact airflow, preventing the AC from effectively cooling the cabin. Clogged or dirty air filters can also restrict airflow, further diminishing the system's performance. Other potential problems include issues with the condenser or evaporator coils, a defective blend door actuator that affects temperature control, and faulty sensors that monitor system performance. Lastly, bad fuses or relays can prevent the AC from functioning altogether. For those looking to tackle these issues themselves, a thorough inspection of these components can help identify the root cause of the AC malfunction, although consulting a qualified technician may be necessary for more complex repairs.

How urgent is it to address the AC failure in my 2016 BMW 428i Gran Coupe?

Addressing the AC failure in your 2016 BMW 428i Gran Coupe should be a priority, especially if you reside in an area with extreme temperatures. While it may not seem like an immediate emergency, the discomfort caused by a malfunctioning AC can significantly detract from your driving experience. Moreover, neglecting this issue can lead to more severe problems down the line, potentially resulting in costly repairs. Regular maintenance and prompt attention to AC issues not only enhance your comfort but also safeguard against further damage to the system. Therefore, it is advisable to assess the situation and take action sooner rather than later to ensure your vehicle remains in optimal condition and to avoid any safety risks associated with driving in uncomfortable conditions.

Related 2016 BMW 428i Gran Coupe Problems

Read about related problems experienced by other BMW 428i Gran Coupe drivers like you.

BMW 428i Gran Coupe recurring #2 cylinder misfire and water pump issues after multiple dealer visits

Some BMW 428i Gran Coupe owners report experiencing recurring #2 cylinder misfires, which may be attributed to faulty ignition components, fuel delivery issues, or problems with the cylinder itself. These misfires can lead to further complications, including overheating and potential damage to the catalytic converter. Additionally, some owners face water pump issues, which are common in this model and can result in overheating warnings and engine performance problems. The cost for water pump replacement typically ranges from $943 to $1,175. After multiple dealer visits, owners often find it helpful to clearly communicate their concerns to ensure thorough diagnosis and resolution of these issues. Regular maintenance, including timely replacement of faulty components, is crucial to prevent future problems, and seeking a second opinion from a trusted mechanic may provide further insights and solutions. Promptly addressing these issues is essential to avoid additional damage and maintain optimal performance of the BMW 428i Gran Coupe.

1 model year affected

Avg Mileage: 135,000

2 others reported problem

1 comment

Nissan Rogue AC compressor failure causing hot air from air conditioner

Some Nissan Rogue owners report experiencing issues with their AC compressor, leading to hot air blowing from the air conditioner. These problems often stem from a faulty compressor that can cause the air conditioning system to malfunction, resulting in hot air instead of cool air from the vents. Common signs of AC compressor failure include unusual noises and a noticeable lack of cooling. If the compressor fails, it compromises the entire air conditioning system's functionality, significantly impacting the vehicle's cooling efficiency.

2 model years affected

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