Why Is the Heating System in My Mercedes-Benz Not Working?

 As the temperatures drop, you will rely on the heater and defrosters every day to get around in your Mercedes Benz. A leak within the cooling/heating system can make your daily commute in the winter troublesome and uncomfortable. If you experience the following signs, you most likely need to service your car's heating/cooling system. 

Musty Odor

If the inside of your Mercedes-Benz starts smelling humidor off, you may have a coolant leak somewhere within the system. You should check by walking around your vehicle or looking under the hood. A mechanic at MBClinic can help you inspect it as well.

Steam Coming From the Engine

If you have smoke coming from the hood, you most definitely have a coolant leak. If you do not take your Mercedes-Benz to get serviced right away, your engine may overheat and blow.

Cloudy Windshield

If your defrosters seem like it's never kicking in, you may have a defect in your heating system. The defroster will not function when you have a coolant leak.

Cold Air Blowing Instead of Heat

If your vents are blowing out cool air with the heater on full blast, you should bring your Mercedes Benz to MBClinic for heater repair. It can be due to a faulty motor or a leak in the heater core.


Below are some common explanations as to why your heater is not working in your Mercedes-Benz: 

  • Antifreeze/Coolant Leak in Radiator or Heater Core
  • Defective Thermostat
  • Faulty Heater Fan
  • Malfunctioning Blower Motor
  • Jammed Heater Core
  • Faulty Wiring or Blown Fuses
  • Flawed HVAC Control Buttons or Switches

Cooling/Heating System Repairs in Denver, CO

If you are experiencing any one or more of the problems above, you should have your car inspected ASAP to avoid further damages. At MBClinic, we aim to keep your Mercedes-Benz in tip-top shape year-round. For all your Mercedes Benz maintenance and repair needs in South Denver, please call or visit our shop today!