Reasons Behind HVAC Blower Failure in Your BMW in Winter ParkPosted on August 7, 2019
It is impossible to talk about comfortable rides without mentioning BMWs. The BMW has been designed to guarantee its owners not only of an out-of-this-world driving experience but to also provide other creature comforts for drivers too. Among these comforts is a sophisticated HVAC system which ensures that the entire car continuously has fresh cool air circulating in it. The same system also ensures that the car has a proper heating system.
However, the HVAC system is unfortunately prone to develop certain problems that may disappoint you during your BMW driving experience. Within the HVAC system are other smaller components that enable it to run effectively. A HVAC blower, for instance, is a component that is used in the system for ventilation, heating, exhaust or air conditioning.
How It Works
The HVAC blower is a motor which enables the car to maintain cool air by taking air from the cabin of the car and passing it through the evaporator within the HVAC system. When this happens, the heat in the air is transferred either to the outside or the inside of the car. If the heat is transferred to the outside of the car, cool air remains and is circulated in the car creating a cooling fresh air effect. On the other hand, if the heat is transferred into the inside of the car, the cabin is heated up.
Reasons for HVAC Blower Failure
The HVAC blower in your BMW can fail for a number of reasons. Wear and tear is a major cause of this failure. Over time and with increased mileage, all car components start to wear out due to old age. The HVAC blower is no different. Even with proper servicing, wear is still inevitable, and a replacement plan must always be in place.
A faulty blower motor relay will also cause the blower in your BMW to fail. This motor relay is an electrical component that powers the HVAC blower. When it develops a fault, the blower will receive no power and will therefore not work.
Electrical faults in the wiring or the circuitry of the car will also affect the HVAC blower. This is because the blower motor relay will not be able to produce any power to relay to the HVAC blower, and so no air will flow through the vents and into the cabin of your car to create the desired effect.
Symptoms of HVAC Blower Failure
When the HVAC blower in your BMW starts to fail you are bound to notice the change in temperature in the cabin. For instance, you may notice that there is no difference when you switch from one temperature to the other. The air conditioning may also fail to come on. If it does come on, it may be impossible to control it to suit your needs.
How to Deal with a HVAC Blower Failure
If the HVAC system in your BMW fails, the most important thing to do is to correctly diagnose the cause of the problem. The HVAC system in every vehicle is different, and as such, you will require the services of a certified mechanic who is well versed with the BMW. This way, you will be able to reduce the possibility of a misdiagnosis and ensure that your car gets the appropriate corrective action.
You can also try to ascertain whether or not you have a blown HVAC blower by switching on the air power knob all the way up to the highest level. As you continue to turn the knob, you should be able to notice a change in the amount of air of flowing into the cabin. If the knob at the highest setting does not increase the flow of air, then you likely have an electrical fault.
With the help of a professional mechanic, however, it will be easy to isolate the root cause of the problem and fix it. Green Garage European Auto Center, just as the name suggests, has vast experience in servicing foreign vehicle models, such as the BMW. We are available to help you in Winter Park and Orlando, Florida. We will help you regain the comfort and convenience of having a fully-functional HVAC blower as soon as you give us a call.