Why is my air conditioning not working on my Mercedes ML350?

While there are a variety of reasons your Mercedes-Benz ML350 air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. What will be the outcome of an air conditioning system diagnosis?

When to check for a blown fuse on a Mercedes ML350?

If your map light, stereo, turn signals, heated seats, headlights or other electronic components suddenly stop working, chances are you have a fuse that has blown out. Fuses should always be the first thing you check if your ML350 is experiencing electrical difficulties because they are relatively easy to check and inexpensive to change.

How to troubleshoot your Mercedes medic air conditioner?

Turn the A/C ON. If you have an Economy button make sure that is off. Make sure fan is on HIGH, temperature selector is turned all the way to COLD, and that the A/C and recirculate light indicators are on. Set the temperature to cold, the lowest setting. Set the cooling fans on high on the climate control.

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.

Why does my Mercedes air conditioner keep blowing hot air?

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?

How to know if your Mercedes Benz has an AC problem?

Start the car and turn on the AC. (make sure the EC button it off!) Press and hold the REST button for 5 seconds or so. The display will change from your temperature settings to a diagnostic mode The number on the left is the sensor ID and the number on the right is the value. Use the left and right “Auto” buttons to cycle through the sensors.

Why does my Mercedes E320 AC not reset?

For example, if you want to know about Mercedes E320 AC reset, it is better to check the manual and follow the manufacturer’s recommendations. 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.

What causes a Mercedes Benz to not move out of Park?

If the shifter on your Mercedes-Benz will not move out of park, the first thing your should check is the battery. Once you confirm the battery is fully charged the two most common problems are a defective brake light switch or a shifter module is damaged.

Why is the gear selector on my Mercedes not working?

P,N,R,D gear selection indicator on dashboard not displaying correct gear. Mercedes-Benz cars that are equipped with automatic transmission have a gear selector shifter interlock safety feature. This safety feature locks the shifter in Park when you turn off the ignition.

What should I replace my ML350 AC compressor with?

Since the root cause of the AC failure was the radiator suction fan, and the 11 year old ML350 had 163,000 on the clock, decided to replace this component as well. Not found on PartsGeek, or PelicanParts; so looked on FCPEuro and OEM Parts.com. OEM was definitely less expensive than FCP, but still spendy at $468.

How much does it cost to replace a ML350 condenser?

At a minimum, replace the compressor and condenser – filled with correct PAG 100 oil ($10), evacuate and recharge with fresh 134a refrigerant ($36). For parts, DENSO is the OEM for the ML350. Called DENSO to order correct model, but they were out of stock.

What happens when the air conditioner compressor fails?

When the compressor fails, the most common symptom is warm air from the vents. A squealing or grinding noise may also be heard from the compressor in the event of mechanical fai… Read More When the condenser fails, the air conditioner will fail along with it.

What causes the refrigerant line on my AC to freeze?

The ice can eventually accumulate on the refrigerant line. Some common reasons that cause your AC lines to freeze are: Refrigerant leaks from evaporator coils; Accumulation of dirt over the coils; Blocked AC vents; Clogged air filters; Blower fan failure; Collapsed air ducts; Low refrigerant levels; Simple and Quick Ways To Eliminate AC Freezing

What to do if your air conditioner is low on refrigerant?

The center part of the A/C pulley only engages when the A/C is on. If the clutch is engaging and disengaging rapidly, the refrigerant may be low. Locate the Low Pressure A/C recharge port. Attach the hose from the A/C Recharge Kit and check the pressure.

Why is my air conditioner full of Freon but not blowing cold?

Re: Air conditioner full of freon but not blowing cold… #1) 1st Check to make sure your compressor is engaging (CYCLING) then possible theres a Leak in Your System/Or a Clogged up Expansion Valve,Very Common.Which is Located going to the Lines from the Firewall to your Evaporater.

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.

Why is car AC not blowing cold air after recharge?

So, whenever your Car AC not blowing cold air after recharge, follow 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. u001dIs it safe to charge the phone when the car is off?

Can a person fix a Mercedes Benz ML320?

Mercedes Benz ML320 AC Fix and Repair ANYONE can do it! – YouTube Mercedes Benz ML320 AC Fix and Repair ANYONE can do it! If playback doesn’t begin shortly, try restarting your device.

What kind of refrigerant does a Mercedes ML350 use?

Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your ML350 consists of a compressor that is belt-driven, an evaporator and freon.

Mercedes Benz ML320 AC Fix and Repair ANYONE can do it! – YouTube Mercedes Benz ML320 AC Fix and Repair ANYONE can do it! If playback doesn’t begin shortly, try restarting your device.

Why does my AC keep blowing hot air?

“Why is my AC blowing hot air?” Check These Common Causes: 1 Blocked condenser 2 Broken cooling fans 3 Broken condenser 4 Low refrigerant due to a leak 5 Electrical faults

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.

What to do if your Mercedes AC does not reset?

The AC system is reset now and the hot air blowing problem is likely to be solved. If your Mercedes car does not respond to this procedure, you should check the owner’s manual. For example, if you want to know about Mercedes E320 AC reset, it is better to check the manual and follow the manufacturer’s recommendations.

How to reset a Mercedes air conditioning system from Japan?

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.

How do you reset the AC in a Mercedes?

Resetting the AC is a simple task. (Photo Source: mercedesclub) Step 1: To do the resetting, you have to insert the ignition key to its slot and turn the ignition cylinder to the position ‘2’. This is the highest point that the cylinder can go without activating the engine.

What should I do if my car AC is not blowing cold air?

When the actuators are not working, you will either receive only cold air and no hot air or hot air but no cold air. In such a case, take your car to an auto specialist who will fix the blend air door. The average cost will come between $130 and $530.

Why is my Mercedes air conditioning not working?

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.

What to do when your air conditioner wont turn on?

Why is my air conditioner not working when I reset it?

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 will allow your air conditioner to work as it did before.

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 should I do if my Mercedes engine stops working?

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.

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.

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.

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.

What do you call a Mercedes climate control reset?

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.

Why does my Mercedes air conditioner not reset?

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. Check the onboard computer if it can verify the damper’s position.

What to do if your Mercedes climate control is not working?

When the control is switched off and on, heating resumes. This could be a Mercedes climate control problem. Replacing the push button assembly or climate control module may help in this situation. Then check the auxiliary water pump to see that it is running and if the heater valve clicks when energized.

Why are the buttons on my climate control not working?

If you pay close attention, you may notice that the button doesn’t spring back. This is caused by a broken plastic on the back of the buttons. This may often be misdiagnosed as a bad climate control unit and some mechanics will replace the whole climate control unit, but that is not necessary. It is possible to repair the broken buttons.

How can I replace my climate control unit?

You can either buy a used Mercedes Climate Control Unit online to replace yours. These units don’t require any programming. Use a third party service which specializes in fixing Mercedes-Benz climate control units. You will need to remove the climate control unit which takes less than five minutes if you have the right tools.

How many miles does a 2009 Mercedes ML 320 BlueTEC have?

Repairs & Parts replaced on my 2009 Mercedes ML-320 Bluetec in 6 years & 10 months and 73,696 miles light duty use. 01. Factory recall: Tail lamps, rear lights, power lift gate module replaced 9cost not known) at 5,176 miles 02.

What kind of gas mileage does Mercedes Benz ML350 get?

Fuel economy ratings for this model are 18 mpg city/24 mpg highway and 20 mpg combined. The ML350 has a 3.5-liter V6 that makes 268 hp and 258 lb-ft of torque, and gets an estimated 15 city/20 highway and 17 mpg combined. The rear-wheel-drive ML350 gets 1 mpg better across the board.

Are there any recalls on the 2009 Mercedes Benz M class?

Factory recall: Tail lamps, rear lights, power lift gate module replaced 9cost not known) at 5,176 miles 02. Warranty work: Noise from front end; replace right front wheel bearing at 27,670 miles 03. Warranty work: Replace left strut assembly front and replace buttons on steering wheel at 32,477 miles 04.

How to save money on Mercedes ML350 AC compressor?

Get affordable Mercedes ML350 ac compressors you deserve. In just 10 minutes, you could save up to 80% with PartsGeek. Save time and dollars on your next ML350 air conditionings purchase. Over 12 Years of saving people money and providing great customer service. Check our low-cost options today.

How to disable automatic lock on Mercedes ml430 ml500?

By disabling the automatic lock function, the car won’t try to automaticly lock the doors. Turn the key to position 2, all your cluster lights are on. Don’t start the car yet.

Why is my Mercedes ML320 door lock not working?

The Problem: The actuators for the individual doors get damaged and jammed thus not responding to the motor when it tries to lock or unlcok the door. When using the keyfob or the dash button for locking or unlocking the doors, the jammed door actuator tries times to complete the lock/unlock action.

What happens when you use the keyfob on a Mercedes ML320?

When using the keyfob or the dash button for locking or unlocking the doors, the jammed door actuator tries times to complete the lock/unlock action.

Why is my car AC not working after recharge?

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! 1. The Compressor is Unable to Connect Numerous reasons can cause the compressor to not to connect with the vehicle AC.

Navigation