Why is the clutch not engaged on my Mercedes?
Remember that the A/C clutch is controlled by the A/C Control Unit. If that unit detects an error it will not engage the A/C compressor to avoid it getting damaged. One other reason why the A/C compressor does not engage is the fact that the system may be low on R134 refrigerant.
How to troubleshoot your Mercedes Benz air conditioner?
Identify the location of your compressor. Look at the pullyer and you should be able to see if it spining or not. The engine running turn the A/C on max cool, set fans high, and make sure that the clutch is engaging on the compressor. The pulley spins any time the engine is running. The center part of the A/C pulley only engages when the A/C is on.
How to troubleshoot a / C compressor clutch problems on your Mercedes?
This video is helpful if you are trying to troubleshoot air conditioner problems, the A/C compressor clutch in particular. This opens in a new window. Start by turning the engine on. Set the AC to maximum cold setting. Open the hood and look at the serpentine belt to locate the AC compressor.
What kind of air conditioner does a Mercedes Benz have?
The A/C system on your Mercedes-Benz includes many sensors and components including the air conditioner compressor. The A/C compressor is the heart of the system. One crucial element of the A/C compressor is the clutch. It is important to understand how to check if the A/C compressor is engaging or not.
Why is my Mercedes air conditioner not working?
Your Mercedes vehicle will flash a host of service lights to inform you when something might be damaged inside the car. If the air conditioner unit is not running normally or is only blowing out warm air, it may be a temporary fault. Sometimes the unit isn’t actually damaged, and resetting your climate control unit
How many times does Mercedes A / C light blink?
Mercedes Repair a/c light blinks 2-3 times , no compressor. Customer Question a/c light blinks 2-3 times , no compressor. Submitted:9 years ago.
How do you reset the AC system on a Mercedes?
Hold these buttons down for about five to 10 seconds, or until the LED lights on both buttons start flashing. Wait 45 to 60 seconds for the LED lights to stop flashing. Then turn off the car. Wait 60 seconds and then start the car engine again.
What is the recirculated air button on a Mercedes?
This is as far as the cylinder will go without cranking the engine. Press and hold the defrost and recirculated air buttons simultaneously. The defrost button has three lines going through it, while the recirculated air button has a picture of a car with a curved line through it.
What to do if your a / C clutch is not working?
When the A/C system does not blow cold air the first thing that you show check is if the compressor engages. If it doesn’t do not assume that the A/C compressor itself is the problem. Remember that the A/C clutch is controlled by the A/C Control Unit. If that unit detects an error it will not engage the A/C compressor to avoid it getting damaged.
When to move on to the clutch relay?
Move on to the clutch relay if the fuse turns out fine. In a few car models, the power of the air conditioning system flows from the AC switch to the fuse before being transmitted to the clutch oil through the low-pressure evaporator temperature. You have to make sure that the compressor has enough oil to function properly.
Why does my car clutch not engage when low on refrigerant?
That’s why car makers install a low pressure switch–to prevent the compressor from running if the system is low on refrigerant. DIY recharging kits tell you to recharge through the low pressure port while the compressor is engaged. But if the system is low on refrigerant, the clutch will never engage.
Remember that the A/C clutch is controlled by the A/C Control Unit. If that unit detects an error it will not engage the A/C compressor to avoid it getting damaged. One other reason why the A/C compressor does not engage is the fact that the system may be low on R134 refrigerant.
When the A/C system does not blow cold air the first thing that you show check is if the compressor engages. If it doesn’t do not assume that the A/C compressor itself is the problem. Remember that the A/C clutch is controlled by the A/C Control Unit. If that unit detects an error it will not engage the A/C compressor to avoid it getting damaged.
Move on to the clutch relay if the fuse turns out fine. In a few car models, the power of the air conditioning system flows from the AC switch to the fuse before being transmitted to the clutch oil through the low-pressure evaporator temperature. You have to make sure that the compressor has enough oil to function properly.
That’s why car makers install a low pressure switch–to prevent the compressor from running if the system is low on refrigerant. DIY recharging kits tell you to recharge through the low pressure port while the compressor is engaged. But if the system is low on refrigerant, the clutch will never engage.
Why is my AC not working on my C280?
But when I checked the pressure on the low side port it appears to be too high. The gauge reading was around 65 psi. Also the compressor does not stay on, it cycles on and off every few seconds. Before I take the car to the shop, my question now is what is the likely problem?
This video is helpful if you are trying to troubleshoot air conditioner problems, the A/C compressor clutch in particular. This opens in a new window. Start by turning the engine on. Set the AC to maximum cold setting. Open the hood and look at the serpentine belt to locate the AC compressor.
How to tell if your a / C compressor clutch is working / engaging?
If there are error codes on the A/C Control Unit the compressor will not engage and you will need to reset the fault codes using a diagnostic scanner such as the Launch Creader or iCarsoft MB II. How to tell if your air conditioner AC compressor clutch is working / engaging?
Why does my a / C CLUTCH not spin when I Turn on the AC?
The center part on the pulley of the A/C compressor will not spin when you have the air conditioner off or if there is a problem. Once you turn on the AC the center part of the compressor, the AC clutch should engage and start to rotate with the pulley.
The center part on the pulley of the A/C compressor will not spin when you have the air conditioner off or if there is a problem. Once you turn on the AC the center part of the compressor, the AC clutch should engage and start to rotate with the pulley.
Identify the location of your compressor. Look at the pullyer and you should be able to see if it spining or not. The engine running turn the A/C on max cool, set fans high, and make sure that the clutch is engaging on the compressor. The pulley spins any time the engine is running. The center part of the A/C pulley only engages when the A/C is on.
If you don’t it doesn’t allow the compressor clutch to engage. Unfortunately if the switch is defective it also won’t let the clutch engage. So if you take both wires off the switch and connect them together with a paper clip or test leads or even if an assistant holds them together, you should see the clutch engage once you start the engine.
What causes a fuse to blow on a blower motor?
If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.
Why does the AC blow warm at idle?
Since the AC compressor is driven by the engine, it doesn’t pump as much refrigerant when you’re at a stop or driving slowly. If the system is low on refrigerant, it will show up as AC blows warm at idle and blows colder when the engine is running at higher RPMs. Get your system refrigerant level checked.
When to disengage the a / C clutch on a Mercedes?
Purpose of the A/C Compressor Clutch. If no problems are detected such as low refrigerant in the system, it sends a signal to disengage the A/C compressor clutch. Otherwise the A/C compressor engages and starts to compresses the refrigerant. By compressing the refrigerant we add pressure to the system.
Why is my a / C compressor not working on my Mercedes?
One other reason why the A/C compressor does not engage is the fact that the system may be low on R134 refrigerant. Typically older cars may have very slow leaks that may require top off with refrigerant every couple of years. You can use a R134a recharge kit to recharge your system if the A/C compressor is not working.
Which is the best a / C compressor clutch for Mercedes?
A/C PRO ACP-100 Professional Formula R-134a Ultra Synthetic Air Conditioning Refrigerant with Reusable Dispenser and Gauge – 20 oz We like the fact that this kit has a gauge for the outside temperature adjustment, so that you can now the exact pressure range you need to be on. Where to buy A/C compressor Clutch for Mercedes-Benz?
How to diagnose an air conditioner clutch problem?
1 Start by turning the engine on. Set the AC to maximum cold setting. 2 Open the hood and look at the serpentine belt to locate the AC compressor. 3 Now look at the pulley of the air conditioner compressor. The center part (the clutch) should be engaged and should be spining along with the pulley.
What is the purpose of the a / C clutch on a Mercedes?
Purpose of the A/C Compressor Clutch While the A/C compressor on your Mercedes-Benz is an important part of the system, the A/C compressor clutch is even more important. Every time you want cold air to blow on your Mercedes-Benz cabin you turn on the climate control and set your desired temperature.
Is there a problem with my Mercedes C300?
The contact owns a 2009 Mercedes Benz c300. The contact stated that the vehicle was experiencing several computer defects. While parked on a hill and attempting to place the gear shifter into reverse, the vehicle would roll forward instead of backwards. The vehicle would roll forward approximately one foot as if it were in neutral.
What kind of car is the Mercedes C 300?
Mercedes-Benz C 300 Sport Sedan $7,500 Private Seller Used 2009 Mercedes-Benz C 300 Sedan $8,050 Moss Bros. Chevrolet Used 2009 Mercedes-Benz C 300 4MATIC Sedan New Listing $8,495 MGM Auto Sales Used 2009 Mercedes-Benz C 300 Sedan New Listing $9,049 Private owner via Tred.com Used 2009 Mercedes-Benz C 350 Sport $10,495 MGM Auto Sales Used 2009
How much does a 2009 Mercedes Benz C 300 cost?
Used 2009 Mercedes-Benz C 300 Sedan $7,400 Premier Auto Group Used 2009 Mercedes-Benz C 300 Sport Sedan $7,500 Private Seller Used 2009 Mercedes-Benz C 300 Sedan $8,050 Moss Bros. Chevrolet Used 2009 Mercedes-Benz C 300 4MATIC Sedan New Listing $8,495 MGM Auto Sales Used 2009 Mercedes-Benz C 300 Sedan New Listing $9,049 Private owner via Tred.com
Where can I find a 2009 Mercedes C Class C?
Get KBB Fair Purchase Price, MSRP, and dealer invoice price for the 2009 Mercedes-Benz C-Class C 300 Sport Sedan 4D. View local inventory and get a quote from a dealer in your area. Home Car Values Price New/Used My Car’s Value Instant Cash Offer Cars for Sale Cars for Sale Sell Your Car Free Dealer Price Quote Vehicle History Report
What are the most common Mercedes Benz transmission problems?
Top 5 Mercedes-Benz Transmission Problems. Won’t come out of Park gear due to a defective brake light switch. ( DIY How to replace the Brake Light Switch) Continue to read if you would like to learn how to troubleshoot your Mercedes-Benz transmission yourself and where you should start. 1. Check Fluid Level
Which is the clutchless variable displacement a / C compressor?
A clutch less variable displacement A/C compressor can be found on models such as W203 C-CLass and W211 E-Class. You will not be able to check the operation of the A/C compressor clutch on such compressors because there isn’t one. The following video explains how the clutchless variable displacement A/C compressors work.