Where is the pressure switch on a Mercedes?
The pressure switch is located directly under the A/C condenser so you will want to start the procedure by lifting the vehicle and removing the forward bumper splash shield. This will allow you to access the shield that protects the condenser and the A/C pressure switch.
Where are the low and high AC pressure switches located?
The low-pressure side switch is found before the AC compressor, while the high-pressure switch comes after the compressor. Most AC pressure switches are found within the engine compartment, but some manufacturers put them elsewhere. A look in your service manual will show you the appropriate location for your model. AC Pressure Switch Function
Why is there a pressure switch on my AC unit?
It is responsible for monitoring refrigerant levels on both the low- and high-pressure sides of the AC unit. That’s why you have two separate AC pressure switches on your vehicle. One monitors the high-pressure side, while the other is evaluating the low-pressure aspects.
What should the pressure be on a Mercedes air conditioner?
Read the pressure in your air conditioner system. If the pressure is low the gauge reading will be in the white zone. If the pressure is normal then the gauge should be in the green zone. You should not have a reading on the HIGH / RED zone except when the car is turned off, in which case it is normal. Always keep the can UPRIGHT.
How to replace the a / C pressure switch on your Mercedes?
This will allow you to access the shield that protects the condenser and the A/C pressure switch. Fold the second splash shield out of the way to gain access to the A/C pressure switch.
What happens when you charge the AC in a Mercedes?
If the refrigerant level is very low, the AC compressor will not engage. Charge the AC system for a couple of minutes with the engine running, and you should notice the AC compressor engage / kick in once you add enough refrigerant into the system.
Where is the pressure switch on a car?
We had our system evacuated at a local shop to demonstrate this procedure. The pressure switch is located directly under the A/C condenser so you will want to start the procedure by lifting the vehicle and removing the forward bumper splash shield. This will allow you to access the shield that protects the condenser and the A/C pressure switch.
How does Mercedes Benz air conditioner system work?
While the pictures on this article are of Mercedes Benz cars, this guide is written to apply to all makes and models. How the A/C System Works. A/C compressor not engaging.