Mercedes ac not cold enough

We are a team of ASE certified mechanics that have created this guide for you so you can understand how the system works and what to look for when it doesn't.

mercedes ac not cold enough

We also have included popular repair guides with videos which will help you stream line your repairs or see what you are paying for when taking your car in to a repair shop. Let's jump right in! When looking under the hood at your car's air-conditioner it might seem complicated but it's not.

Once you know how it delivers cold air you will see it's really quite simple. Your heater and air conditioner HVAC does three jobs; cool the interior of the car, heat the interior up and defrost the windshield. All three modes work together as a complete system. The climate control system is controlled by a main computer which houses the controls for the system and sits in the dash in most cases. This computer gives commands to the compressor to start pressurizing the refrigerant along with the blend door actuators which direct air flow from the floor, mid and defrost vents.

These air door actuators also control air temperature by mixing the hot air from the heater and the cold air from the AC. When one part of the system fails to operate like the air conditioner then one part of the system stops working in this case the cold air.

The AC system has four basic parts: A compressor, which is powered by the engine using a serpentine belt. On hybrid cars the compressor is electrically powered and does the same operation. A condenser which is located in front of the engine radiator and cools the refrigerant from the compressor before it heads to the evaporator located inside the vehicle.

This is where the high pressure liquid is released into the evaporator as a low pressure gas and where the coldness is created. The blower motor then circulates the air throughout the interior. Start with the car on level ground with the transmission is park and the emergency brake set. The engine should be off, but warm.

mercedes ac not cold enough

Wear safety goggles and gloves to protect against injuries. Never loosen or undo any hoses or fitting before discharging the system of refrigerant. The system does contain a slight amount of oil which can be expelled while discharging.But, people generally face this issue. Your car includes various parts that are interconnected with each other.

Therefore, even if you have recharged the AC of your vehiclethe issue in other car machinery can affect its working too.

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There could be numerous reasons for the improper AC working after you recharge it. You can handle the situation by finding out the most common reasons for this right away! Numerous reasons can cause the compressor to not to connect with the vehicle AC. It could be an electrical failure in the circuit during charging, overheating vehicle, or maybe the coolant is just low. And, when it senses any issue, AC is the first thing to get shut-off.

So, make sure that you check the compressor as it could be the reason why car AC not blowing cold air after recharge. Blend air door is the reason for drawing hot air to cold air in your car system.

This door is located in the ventilation system. Therefore, you need to take your car to the mechanic whenever you find any fault in the stuck blend door.

Latest technology car system is more sensitive than the older ones. The chemical Freon or simply you can call it coolant is the reason why the AC cools hot air quickly. The chemical can run out if there is any leakage in the AC. Thus, AC would not work, as there is no Freon in the system.

You can handle this situation by using the best maintenance tips. Use a charging machine that will pour coolant and make your AC work properly. The improper or no working of AC can signify some serious problem. So, whenever your Car AC not blowing cold air after rechargefollow the above tips.

Or, you can simply take your vehicle to the professionals as they know what exactly to do. Moreover, timely repair can avoid future issues as well. Check out the video below to know how How to fix Car AC that blows hot air:.

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Hopefully this article will be useful for you.With the economy relying heavily on e-commerce and delivery services, the Mercedes-Benz Sprinter will play a significant role in its continued growth. That alone shows how reliable the Sprinter vans are. The model is full of modern gadgetry that you find in passenger vehicles and will be the model that Amazon will first start using for its new delivery program. Also, understanding the common problems with Mercedes sprinter vans allows fleet managers to plan and budget accordingly.

So, problems are bound to arise, no matter how well they are designed. Furthermore, because of the wear and tear of the vehicles, owners can expect to pay a significant amount of money in annual repair costs. More specifically, brake pad and broker rotor replacement, brake caliper replacement, and a starter replacement.

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That said, here are the two most common problems with Mercedes Sprinter vans. As previously mentioned, the Sprinter vans are worked very hard with a minimum of 12 hour days, so problems are guaranteed to arise. One of these issues is not being able to start the engine.

There can be many reasons behind an engine not starting.

mercedes ac not cold enough

In the case of the sprinter van engine not starting, there are 3 main culprits:. Again, these vehicles are pushed to the limits and issues are expected. Another reported problem with Sprinter vans is the AC not working. And there are common reasons why this is occurring:. Having an AC system that works is important to keep drivers comfortable. The more comfortable they are, the more they can deliver, so it is important to get this common problem with Mercedes Sprinter vans fixed.

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Dear Valued Customers. After conferring with State and local officials and based on the relatively small number of personal interactions involved in our daily operation we have decided to continue to function and will be open regular hours.A trip to the shop can be an expensive proposition, so arriving armed with a few tips can help save you money.

Usually, the problems are fairly easy to remedy, whether it be a faulty compressor or a blown fuse. Before taking your Vehicles to a mechanic, there are a few basic troubleshooting steps you can run through on your own. Check to see that the AC controls are operating correctly. Start the engine and turn on the fan and air conditioner. If the controls are difficult to move or loose, have them replaced.

If the fan does not switch on, a fuse might have blown or the fan motor could have blown. Replace the fan. Inspect the fuse box for blown fuses. The fuse box in a Mercedes E is on the end of the driver's side dashboard. Open the door to access the panel. Consult the diagram on the inside of the fuse box cover to identify the fuse that corresponds to the AC system.

If the fuse is damaged, replace it with another of the same amperage rating. The hoses protrude from the firewall. The firewall divides the engine and passenger compartments. The hoses are similar to the thickness of a garden hose. Place your hand on the two hoses.

Both should be warm to the touch. However, one should be noticeably cooler than the other. If not, this could mean that the valve control needs to be replaced. Have a qualified mechanic investigate further. Turn up the air conditioner to its highest setting with the engine running. Check under the hood to see whether the magnetic clutch connected to the AC compressor engages. If you do not see or hear the clutch turn over, the system might be low on refrigerant.

Have a mechanic refill the system. An excessively noisy compressor could mean that it is close to failing.

Check all the AC hoses for leaks. If you notice a green, oily residue on them, they could be damaged and may need to be replaced. Use the AC compression test gauge with the engine off to check for sufficient pressure in the AC system. The test gauge has red and blue hoses attached to red and blue monitors to calculate the pressure. Remove the black caps from the service ports on the E's AC unit. Screw the blue hose to the low-side service port and the red hose to the high-side port.

Check the pressure readings on the monitors. If the reading is not between 50 psi and 80 psi, have a qualified mechanic investigate further as this could mean there is a leak in the system. Find the AC compressor in front of the engine.

mercedes ac not cold enough

The AC compressor has a belt attached to the engine so that it turns when running. Ask your friend to start the engine while you look and listen to the engine.One of the most common complaints of Mercedes users is issues with the air conditioning system.

In many models, the AC keeps blowing hot air even after recharging the coolant. It is a frustrating problem, especially during the summer, when it is almost impossible to drive a car without the AC on. A Mercedes air conditioning reset is a possible solution. Do you know how to do it? Is there any other way to fix the glitch? All Mercedes cars have a series of service lights that there is something wrong with an internal component or system.

However, there might not be any damage in the AC unit when it is blowing warm air or not running properly. It could be a temporary fault and a reset is likely to be enough to restore the normal function. Sometimes, the process is called a Mercedes climate control reset. The reset procedure is similar no matter whatever you call it. However, if the AC shows any trouble after resetting, you have to take it to a servicing shop or the dealership for a permanent fix.

This is the highest point that the cylinder can go without activating the engine. Step 2 : Press the buttons for recirculating air and defrosting at the same time and hold them for somewhere between 5 to 10 seconds.

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To be on the safe side, hold them until their LED lights start flashing. Step 3 : Wait for about a minute for the LED lights to stop flashing.

When they do, turn the car off. Wait one more minute before restarting the engine. The AC system is reset now and the hot air blowing problem is likely to be solved.

If a Mercedes air condition reset does not work, these following reasons could be causing the trouble:. When the AC is releasing hot air, the possible reason could be a defect in the damper.

The component is in charge of the air path that goes into the cabin. A leak in the AC refrigerant is most likely the culprit when the blown air not hot but not cold either. It could also be a clogged AC fan blower motor. The first one could result in an expensive repair but fixing the second component is easier and less inexpensive. Tsukasa Azuma is an awesome car blogger of Car From Japan. He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts.

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Mercedes AC Aircon Fault Reset, Leak Fix & Re-charge. W211 E-Class

Maintenance Tips. By Tsukasa Azuma Last updated Oct 8, 0. Tsukasa Azuma. Leave a comment. CFJ Kenya. CFJ Mozambique.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. Be aware that if you reset the unit and it again stops working, you need to take the vehicle in to the dealership for repairs.

Insert the key into the Mercedes ignition and turn the ignition cylinder to the "2" position. 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.

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. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Works, contact us.

Step 1 Insert the key into the Mercedes ignition and turn the ignition cylinder to the "2" position. Step 2 Press and hold the defrost and recirculated air buttons simultaneously. Step 3 Wait 45 to 60 seconds for the LED lights to stop flashing. Wait 60 seconds and then start the car engine again.

How to Reset a Mercedes AC System

About the Author This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.Air conditioning systems make life a lot more comfortable.

This is true inside our homes, businesses, and of course, our cars. BMW vehicles are especially advanced when it comes to driver comfort, and their air conditioning systems are no joke. In hot temperatures, air conditioning is critical, as it provides us relief from the heat.

Furthermore, in heavy traffic conditions they tend to make life a lot more bearable. Diagnosing air condition system issues in a BMW is not much different from that of other cars. In fact, there is a series of steps to follow and questions to ask before you bring the car in to a professional. Noticing signs of dwindling air conditioner performance can be helpful, but sometimes these things seem to happen completely overnight.

If your BMW is experiencing air conditioning failurethe following information might be helpful for you to know. A differential diagnosis is a method that automotive professionals use to find the cause of the problem the client is currently experiencing. For instance, there is a sequence of questions one might ask themselves when trying to isolate the specific part of the BMW that needs replacement or repair.

When it comes to air conditioning problems, these are the three most important questions to ask yourself:. If after turning on your air conditioning to full blast you notice that nothing happens at all, it could be simply related to an electrical switch issue with the air conditioning button. You might not have any air coming out at all—or at least it may seem that way.

However, if air blows even the slightest bit but is weak, then the problem could be traced to the blower motor or HVAC blower.

How to Troubleshoot the A/C in Vehicles

If the temperature of the air coming out of the vents is warm or not cool at all, then the issue could be related to a Freonor refrigerantleak. Freon is the fluid that circulates through your air conditioning system and causes the air coming out to be cool. There are several different possible causes of air conditioning failure, and this elicits the need for a professional BMW mechanic to perform a differential diagnosis.

Isolating the source of the problem is important in order to save time and money in repair work. These are the two most common reasons for air conditioning failure in a BMW vehicle, or any vehicle for that matter. The air compressor is what generates power, causing the air to blow through the vents. If the air compressor begins to diminish in performance or is in need of repair, it could cause the flow of the air coming through the vents to be extremely dampened.

As we mentioned before, Freon leaks can cause your air conditioner to produce only warm air—or at least not cold air. This could further be due to any other number of issues including O-ring failure or a particular seals deterioration.

A thorough inspection of your air conditioning system will quickly detect a Freon leak and can quite easily be traced back to where the leak began.

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Since air conditioning in your BMW is essential, especially during summer months, we always make it a point to inspect air conditioning parts routinely throughout the year so that our clients are never left without working air conditioning. If you are concerned that your air conditioning system has begun to recently fail or malfunction, please contact our shop to schedule an appointment as soon as possible.

We look forward to restoring your BMW to its most comfortable self again. After conferring with State and local officials and based on the relatively small number of personal interactions involved in our daily operation we have decided to continue to function and will be open regular hours. We have taken aggressive measures to sanitize surfaces that are prone to human touch and will do so on a continuing basis.

In addition we will make certain that as we interface with you at the counter, handle your keys, answer questions and clean your car and take payment we will maintain proper distance and sanitize the touch points in your car. We are committed to your safety and well being and will comply with any restrictions imposed by authorities. We are here to support all of our clients as best we can for as long as we can.

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Don't hesitate to call the shop with questions.


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