If you want to cool down in summer time, or help you clear the fog from your windshield in the winter, air conditioning in vehicles has grown to be an almost necessary feature recently. But what if the air conditioning in an Mercedes Classe B isn’t cold anymore? This is precisely the question we will try to answer in this article. First, we’ll look at the various problems that can prevent the air conditioning in your Mercedes Classe B from cooling down, and finally, we’ll check out the solutions available to you to fix this issue.

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WHY IS THE AIR CONDITIONING IN MY Mercedes Classe B NO LONGER COLD?

We will start our guidebook with the symptoms that can explain that the air conditioning of your Mercedes Classe B is no longer cooling.

BAD AIR CONDITIONING SMELL in my Mercedes Classe B air con

One of the fairly known clues that can warn you to the fact that your air conditioning is not functioning is if you have a musty or damp smell inside your motor vehicle, and yes, a bad smell can be a warning of a faulty air conditioning system, it can be lasting or only present when you turn on your air conditioning. To locate a solution to this malfunction, we suggest you to read our guidebook dedicated to bad air conditioning odors on Mercedes Classe B.

AIR CONDITIONING NOISE ON Mercedes Classe B

One of the other symptoms that can inform you to a not working air conditioner is that you experience a strange noise is coming on when you turn on your air conditioner (feel free to approach the vents to verify for any dubious noise). This noise could indicate a faulty air conditioning clutch or a faulty customer compressor.

LOSS OF PRESSURE IN THE AIR CONDITIONING CIRCUIT

Actually quite hard to notice without complex mechanical knowledge, a loss of pressure in your car’s air conditioning system can end result in your air conditioning no longer generating cold. There are several possible motives to do this loss of pressure, and these are listed below:

  • Leakage of refrigerant fumes
  • Non-functioning air conditioning compressor

AIR CONDITIONING SYSTEM THAT DOESN’T WORK AT ALL on my Mercedes Classe B

At last, it’s possible that the air conditioning in your Mercedes Classe B is no longer cold just because your air conditioning system is no longer working. Here are the different origins of an air conditioning system that no longer works:

  • Compressor pulley HS: The compressor will be out of power and the circuit will be stopped.
  • Overpressure problem: This will cause the device to trip.
  • Defective sensor: As with overpressure, the air-conditioning system will switch to safe mode.

HOW DO I RESOLVE THE AIR CONDITIONING ON MY Mercedes Classe B THAT IS NO LONGER COOLING?

Now that we have been able to see the main triggers of a Mercedes Classe B air conditioning system that no longer cools down, we are going to show you the different solutions available to you . First of all, you should know that an air conditioning system is elaborate, and that wanting to perform repairs yourself is not always the best idea, supposing that you are sure of the origin of the breakdown. However, here are the main possible repairs and an estimate of their cost.

First step, before executing any major fix, clean the air conditioning of your Mercedes Classe B, don’t hesitate to check out our dedicated article on this subject matter.
If this is not enough, bleed and refill the coolant, which should cost you around 100aine euros.
Replacing the air conditioning clutch: you will need to spend around 150 euros for parts and around 100 euros more for labour.
Searching for and repairing an air conditioning leak: depending on the position of the leak it will cost you more or less, count on average 150/200 euros, counting the air conditioning refill.
Replacement of an air conditioning condenser: you will need to count about 200 euros.
Replacing the air conditioning gas compressor on Mercedes Classe B costs about 500 euros with labor.

Whenever you have any additional questions about the Mercedes Classe B, do not hesitate to consult our Mercedes Classe B category.