2013 BMW 535i GT Heater Isn't Working

Common Causes of Heater Issues in Your 2013 BMW 535i GT and How to Resolve Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
31% chance it's the
Heater Blower Motor
0%
18% chance it's the
Heater Blower Motor Resistor
0%
51% chance it's
Something else
The most common reasons a 2013 BMW 535i GT heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
  • Heater Blower Motor: A faulty heater blower motor can result in inadequate airflow or no air coming from the vents, often due to electrical issues or motor failure.
  • Heater Blower Motor Resistor: A faulty heater blower motor resistor can cause inconsistent fan speeds or complete failure of the blower motor.
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 steps should I take to diagnose the heater issue in my 2013 BMW 535i GT?

To effectively diagnose the heater issue in your 2013 BMW 535i GT, start by reporting the specific symptoms you are experiencing, such as uneven heating where one side is warm while the other remains cold. This initial information is crucial for understanding the problem. Next, check the coolant level and ensure that the radiator cap is secure, as low coolant can significantly impact heating performance. After confirming the coolant is at the correct level, inspect the belts and hoses for any signs of wear or damage, as these components can affect the overall functionality of the heating system. Additionally, examine the heater core for blockages, as a clogged heater core can prevent proper heat distribution. If these steps do not resolve the issue, it may be time to consult a professional mechanic who can provide a more thorough diagnosis and recommend necessary repairs. By following this structured approach, you can systematically identify and address the heater problem in your vehicle.

What are the common problems that could cause the heater to stop working in a 2013 BMW 535i GT?

When the heater in your 2013 BMW 535i GT stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the first things to check is the heater blower motor, as a malfunction here can prevent warm air from circulating. Additionally, the thermostat plays a crucial role in regulating engine temperature and can cause heating issues if it fails. Low coolant levels or air trapped in the cooling system can also lead to inadequate heating, so ensure these are at optimal levels. A clogged heater core can restrict airflow and reduce heating efficiency, while a faulty blend door actuator may prevent the proper mixing of hot and cold air. Other potential culprits include a bad water pump, a dirty cabin air filter, or even a malfunctioning HVAC control unit. If you notice coolant vapor in the cabin, it could indicate a heater core failure. By systematically checking these components, you can identify the root cause of your heating problem and take the necessary steps to fix it.

How urgent is it to address the non-functioning heater in a 2013 BMW 535i GT?

Addressing a non-functioning heater in your 2013 BMW 535i GT should be treated with urgency, particularly if you live in a colder climate or frequently drive your vehicle. A malfunctioning heater not only compromises your comfort during chilly weather but can also pose significant safety risks. For instance, without adequate heating, your windows may fog up, impairing visibility and increasing the likelihood of accidents. Moreover, neglecting this issue can lead to more severe mechanical problems within the heating system, resulting in costly repairs down the line. Therefore, it is crucial to assess the situation promptly, especially if you notice any symptoms of heater failure. A professional diagnostic check can help identify the root cause and determine the necessary repairs, ensuring your vehicle remains safe and comfortable to drive.

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2013 BMW 535i GT Heater Not Working: Causes & Repairs