Why is my ML320 blowing hot air only?

A common problem with the ML320 / ML430 is the AC getting stuck on Hot or Cold setting. This is caused by the blend motor flap getting stuck and no longer moving when you rotate the AC knob between Hot and Cold. You can manually switch the blend motor flap if you remove the glove box.

Where is the fan on a 1999 V220 Ambiente?

Click to expand… I have a 1999 V220 Ambiente with same problem, fan sometimes works and comes on over speed bumps. I have located the motor, visible behind left hand dash vent, but can’t get at it to remove. Even when working it’s not powerful so needs replacing or new brushes, just need to remove it.

What to do if your Mercedes heater blower is not working?

My blower motor was fixed in with 3 posidrive screws. Had to use a stubby screwdriver on one of them too due to a serious lack of room. Check first before just pulling it out Rooty.

Where is the flap on the ML320 ml430?

Open the glove box and you will see the four screws that hold it in place. Once you remove the screws pull out the glove box. Behind the glove box (on the left) you will see a white plastic arm. This is the flap that switches the air flow from hot to cold. It gets stuck in HOT position.

Why does my Blend motor not move when I Turn on the AC?

This is caused by the blend motor flap getting stuck and no longer moving when you rotate the AC knob between Hot and Cold. You can manually switch the blend motor flap if you remove the glove box.

What to do if your blower motor has failed?

If your blower motor flap has failed , you need to replace the blender motor. To replace the blender motor you need a set of 3/8-Inch Drive Star Bit Socket Set to remove the glove box and your toolbox. This video may help you if you plan to replace the air blend motor. If playback doesn’t begin shortly, try restarting your device.

Where is the regulator on a Mercedes fan blower?

The Mercedes Benz fan blower motor regulator is a series of resisters in a printed circuit board about 2-inches square located right next to the blower motor.

This is caused by the blend motor flap getting stuck and no longer moving when you rotate the AC knob between Hot and Cold. You can manually switch the blend motor flap if you remove the glove box.

How to fix stuck flap on ML320 ml430?

You can also manually switch the stuck flap to COLD settings if you need a temporary solution. Overwise buy the part above and replace it. This opens in a new window. Start by removing the glove box. Open the glove box and you will see the four screws that hold it in place.

What to do if your heat pump is not working?

Go outside and clean off the heat pump so it’s free of any debris and check the air filter to see if it needs to be changed. Refrigerant charge is low: Again, if your refrigerant levels are too low or if there is a leak, your heat pump will struggle to cool your home. Have a technician come out to check your levels and fix any leaks .

Why does my hot water heater keep running after the thermostat turns off?

Watch out: as we warned earlier, warm air heat blower units behave differently than hot water or steam heat systems: to avoid damage to the heat exchanger the air handler or blower unit will normally keep running for a minute or even a few minutes after the thermostat has stopped calling for heat.

Why is my AC blowing only hot air?

The air coming in may be cold, your AC setting is on cold but you get only hot air from the vents. The following video will show you how to check the operation of the A/C air blend heater flap. You can also manually switch the stuck flap to COLD settings if you need a temporary solution.

Why does my Mazda Protege heater only blow out front vents?

Eighth generation of the Mazda Protege. Heater only blowing out front vents, no heat to feet or defrost. Why? Heater working but only blows out front vents. No heat to feet or defrost.

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.

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 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.

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?

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.

When did the Mercedes ML 320 come out?

ML 320 is a five-door sport utility vehicle manufactured from 1998 until 2001. It is available as rear-wheel or front-wheel drive. It is produced with 3,199 cc petrol engines. This model?s engine can produce power of 160 kW.

How does the defrost button on a Mercedes work?

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.

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

Are there any problems with my Mercedes ML 320?

Low range light flashing. Power steering problems. Will need power steering pump replacement. Door lock actuators also tend to be prone to failure. Plastic trim inside the car break easily. Window regulator. Fuel pump. Oxygen sensors. Alternator may need replacement between 130k and 170k miles.

What are the most common air conditioner problems?

Common A/C Problems 1 A/C Blowing Warm Air 2 No pressure or low refrigerant levels in the A/C System 3 Compressor Clutch 4 Freon R134a leaks 5 A/C compressor not engaging. 6 Liquid lock of the compressor 7 A/C blowing hot air 8 Compressors switches on then off very quickly.

Why is my ML320 blowing hot air even when the AC is on cold?

Is your ML blowing hot air even though you have the AC on cold setting? A common problem with the ML320 / ML430 is the AC getting stuck on Hot or Cold setting. This is caused by the blend motor flap getting stuck and no longer moving when you rotate the AC knob between Hot and Cold.

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.

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.

How to recharge air conditioner ML320 W163 1998?

Open the hood of your ML320 W163 and locate the low-pressure AC service port and remove the cap. Attach the refrigerant gauge to the service port. You will need to press and hold the quick-release at the end of the hose, insert it on the AC charging port then release it. Read the pressure in your air conditioner system.

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.

When did the Mercedes Benz ML Class come out?

In this article, we consider the first-generation Mercedes-Benz M-Class / ML-Class (W163), produced from 1997 to 2005.

Is the Mercedes-Benz ML400 a good truck?

The later models had less problems compared to the first few years of production, specifically the 1998 and 1999 model years. Another thing to keep in mind is that Mercedes-Benz ML, especially ML430 and ML500 are great truck for towing. Picture M-Class, W163. If playback doesn’t begin shortly, try restarting your device.

What to do if your Blender blower motor has failed?

Pay attention to white arm on top of the blender motor. First, try to operate it manually a couple of times. Hopefully, it will start to work again. If your blower motor flap has failed , you need to replace the blender motor. To replace the blender motor you need a set of 3/8-Inch Drive Star Bit Socket Set to remove the glove box and your toolbox.

Can a heater be replaced in a windscreen?

Older heaters have their elements fitted inside the windscreen glass and in this case the heater can be replaced only by fitting a whole new window. Instead it is cheaper and more convenient to fit an after-market heater. Modern heaters have the elements printed, or stuck, on to the screen with adhesive.

My blower motor was fixed in with 3 posidrive screws. Had to use a stubby screwdriver on one of them too due to a serious lack of room. Check first before just pulling it out Rooty.

Are there any problems with the Mercedes-Benz W163?

At the same time there are many owners who have put over 200k or even over 300k miles on this SUV. Problems such as door lock actuators or plastic trim that brakes easily are issues that disappoint owners. We have worked on and owned several W163 and have put together the list of common problems for you.

Why is my VW Golf blower not working?

Here’s what to check. The heater matrix is the source of most climate related complications on the Mk2 Golf and its booted brother the Jetta; and when it goes your blower will be chucking out cold air not hot.

Where is the blower motor in a Mercedes Benz?

The blower motor controls air flow into the passenger cabin in conjunction with the blower motor resistor (final stage). It is mounted in the heater housing behind the right side of the dashboard. The blower motor speed is adjusted via the HVAC control panel through the blower motor final stage.

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.

Why does my blower motor not turn on?

Blower motor does not turn ON. Blower motor only runs at one speed. Over time, a blower motor may become noisy as the motor electrical contacts wear. I have also seen debris from a rodent get trapped in the blower cage creating a vibration or noise. If your blower is noisy, pull it down and see if there is something stuck in it.

How many volts does a blower motor have?

Your DVOM should read battery volts (green arrow). If the blower motor is running, it will be about 12 volts with a vehicle power supply on. If just testing using your battery, expect a two-volt drop from what open circuit battery voltage is at the time.

What does it mean if your blower motor is not working?

Average rating from 849 customers who received a AC is not working Inspection. The blower motor resistor is an electrical component that is a part of the vehicle’s heating and air conditioning system. It is responsible for controlling the blower motor’s fan speed.

What are the symptoms of a bad heater motor resistor?

Symptoms of a Bad or Failing Heater Blower Motor Resistor. 1 1. Blower motor stuck on one speed. A common symptom of a faulty blower motor resistor is a blower motor that is stuck on one setting. The blower 2 2. Blower motor does not work on certain settings. 3 3. No air from the vehicle’s vents.

Why does my Mercedes-Benz A / C blower run uncontrolled?

But under fault conditions it could fail as ‘always on’ or ‘never on’. Mostly (according to this forum) a failed BR causes the a/c blower to run uncontrolled. Btw your WIS a/c circuit diagram is not identical to mine for W208. However the blower motor/regulator part is the same.

What causes an air conditioner fan to stop working?

A filter that’s not a proper fit can obstruct airflow and put more stress on your air condition fan. After an extended period of time, you fan can break or stop working. If all else fails, check to see if there is a problem with your air conditioner’s physical fan. While inspecting the fan, first check the bearings.

Why does the radiator fan not come on when the AC is on?

In order for the AC Condensor to do its job it must stay as cool as it can. As for the engine coolant temp sensor, if the coolant is not hot enough to make the fan come on, then there is no need for the fan yet and there is no problem.

What to do if your air conditioner fan is not working?

First, turn on your air conditioning, head out to the compressor unit outside your home, and listen. Even if the fan isn’t working, you should still hear the hum of the compressor. If you hear nothing, the fan isn’t the problem. Your compressor isn’t receiving any electricity. This could be a circuit breaker issue or a faulty contactor.

Why are the vents on my car not blowing air?

I just bought a new climate control box and installed it, but it did not fix the problem. That is, the light behind the blower knob still does not illuminate and, the center and windshield vents do not blow air when the blend selector knob on the right end is adjusted (see photo).

Why is my hot water heater blowing out the front vents?

Actuator could be stuck, faulty, linkage off, etc. Could not find a link for the 1998-2003 protege but will post a link to show and tell in general where and what to look for. You may also find a reasonably priced repair manual online or at the local library to borrow.

Is there issue with auto climate control not changing from vent to vent?

Has anyone had an issue with the auto climate control not changing from vent to vent? Re: Fan Only Blows Defrost, Won’t Change To Floor Or Vent. Pull the negative battery cable and re-install, making sure it is very tight (also check the positive to make sure it is tight). See if this fixes the problem.

Why is the defrost on my Mercedes ML350 not working?

I had the same problem but with the defroster but different symptoms, My 2004 ML350 had condensation constantly forming in the summertime on the outside bottom of the windshield, whenever the A/C was running. The defroster flow would not close off regardless of the setting on the airflow control dial.

Why do air vents need to be replaced?

Actuator Replacement The climate system is responsible for controlling the position of the defroster actuator which is connected to the air position door in the heater plenum. This actuator controls defrost, middle and lower air vents. When it fails it can do so in the defrost position and must be replaced.

Are there any problems with the Mercedes ML?

Mercedes-Benz improved some designs and address several of the problems on the list above. The later models had less problems compared to the first few years of production, specifically the 1998 and 1999 model years. Another thing to keep in mind is that Mercedes-Benz ML, especially ML430 and ML500 are great truck for towing.

What kind of engine does the Mercedes ML320 have?

MLs share the M112 engine found in the ML320 and the M113 engine found on the ML430, ML350, ML500. The 722.6 gearbox installed in the ML is one of the most reliable transmission produced. ABS/ETS/ESP lights.

Why is there no heat in my Mercedes ML320?

Description: Trouble shoot an air conditioner and heater control in a Mercedes ML 320. Sometimes it’s just the airflow door motor that’s fried and is not opening the small door that directs the Hot or Cold air out the vents. You have to remove your dash to get to it, or…try this Loading…

Why does my Mercedes Benz make a clicking sound?

The clicking sound and the rest of the symptoms may be attributed to a broken stepper motor lever or the footwell damper linkage. This is a common problem in MB C230, C240, C320, CLK320, CLK350, CLK500 but this problem can affect other Mercedes-Benz models such as E, S, CLS, GL, ML Class.

What are the parts of the Mercedes ML320?

Mercedes Benz ML320 Parts & Accessories. Mercedes Benz ML320 A/C Compressor. Mercedes Benz ML320 Alternator. Mercedes Benz ML320 Axle Assembly. Mercedes Benz ML320 Ball Joint. Mercedes Benz ML320 Blower Motor. Mercedes Benz ML320 Brake Booster. Mercedes Benz ML320 Brake Caliper. Mercedes Benz ML320 Brake Disc.

What’s the difference between the first and second generation ML320?

The second generation ML320 was sleeker, sportier, and more aerodynamic (its drag coefficient is down to 0.34) than its first-generation counterpart. While some of the features of the first-generation ML320 were retained, new ones were introduced as well such as the revolutionary 7G-Tronic seven-speed automatic transmission system.

Can a defrost fan blow to the floor?

Fan Only Blows Defrost, Won’t Change To Floor Or Vent. I discovered today that I only receive air through the defrost vents. tried to change it to the floor or the dash vents, no deal.

Why does my C280 blow air from the vents?

My C280 seems to have developed a bad actuator motor MB calls it a stepper motor in the plumbing vent work. All air blows from defrost and side vents.

What should the air pressure be in a Mercedes Benz?

With the car off the pressure readings should be about the same as ambient temp. in degrees F. If the outside temp is say 80 degrees F, then the pressures on both gauges should be around 80 psi. If the pressures are ok, the compressor should kick on when a/c is requested. If the compressor does not come on, then there is an electrical concern.

What do I need to replace my blender motor?

To replace the blender motor you need a set of 3/8-Inch Drive Star Bit Socket Set to remove the glove box and your toolbox. This video may help you if you plan to replace the air blend motor. If playback doesn’t begin shortly, try restarting your device.

What causes a p0412 code on an air pump?

Potential causes of a P0412 code include: Control circuit open due to damage, etc. Open or short on battery feed circuit to solenoid Open or short on battery feed to relay control circuit If you have access to a scan tool, with KOEO (Key on engine off) command the AIR pump solenoid on and off.

What is the ECM code for an oil pump?

Code p06daoo. Oil pump valve, the activation of oil pump valve, the activation of the valve of the oil pump in the combustion engine has a electrical fault … read more Wolfgang 5,568 satisfied customers What is ECM Code… P06DA00 for 2014 Cla 250? Need to know

What happens if you miss an oil change on a Mercedes Benz M272?

Missed oil changes on the M272 or M273 can have a direct impact on the longevity of the engine. The main impact that worn out oil will have is on the variable valve timing actuators and the seals inside. The result will be that the actuator solenoids will either not hold pressure or they will seize.

How does the air vent work on a defroster?

The vent control system for the defroster in integrated into the operation of all temperature controls and uses forced air provided by the blower motor. On newer cars the vent direction and temperature controls are operated by a series of 3 or 4 electrical actuator motors which are adjusted by the climate control module.

Where is the defroster located in an air conditioner?

The defroster is part of the heater and air conditioner system which is housed inside of the heater plenum. The vent control system for the defroster in integrated into the operation of all temperature controls and uses forced air provided by the blower motor.

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.

What to do if your Mercedes AC unit 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. This is as far as the cylinder will go without cranking the engine.

How do you defrost a Mercedes Benz without cranking the engine?

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.

What’s the difference between an M320 and a m320a1?

M320 Grenade Launcher Module (GLM) The M320 40mm grenade launcher is an interoperable system, attaching under the barrel of the rifle or carbine and can convert to a stand-alone weapon. The M320 is designed for attachment to the M16A4 rifle, while the M320A1 is designed for attachment to the M4 carbine.

Is the M320 grenade launcher an interoperable weapon?

The M320 40mm grenade launcher is an interoperable system, attaching under the barrel of the rifle or carbine and can convert to a stand-alone weapon. The M320 is designed for attachment to the M16A4 rifle, while the M320A1 is designed for attachment to the M4 carbine.

What kind of fluid does a’99 ML320 use?

I’ve read too many threads on the ’99 ML320 transmission fluid recently. Pretty entertaining for a while, but I was not able to find one bit of information I would have liked;

Why does my ML not start while driving?

One might be the cause of the battery drain or not starting then your ML may have lost the key information. If it wouldn’t start or it stop while driving but after say 30 minutes it would start and run normally then it might be your crank shaft position sensor. $50 sensor back of engine drivers side about 10 minutes to diy fix.

Can a pre 2000 ml lose its settings?

On the early pre 2000 ml’s the aam can loose it’s settings when disconnected from the battery. These can include the ignition key sync or even the keys rfid information. If when you try to start it starts then run some for maybe a half second before shutting down this could be your problem.

What happens if you turn off the Aam on a 2000 ml?

STARTS UP SHUTS DOWN BATTERY WENT DEAD CHANGE IT NOW IT WONT STAY RUNNING. It will if u keep it running for 10 minutes.. On the early pre 2000 ml’s the aam can loose it’s settings when disconnected from the battery. These can include the ignition key sync or even the keys rfid information.

How can I charge my Mercedes ML320 air conditioner?

You will need to press and hold the quick-release at the end of the hose, insert it on the AC charging port then release it. Read the pressure in your air conditioner system. If the pressure is low the gauge reading will be in the white zone.

How to recharge ML320 W163 1998-2005?

How to recharge the Air Conditioner (A/C) system of your ML-Class W163. Turn the engine on and let it idle. Turn the air conditioner ON and set it to the maximum cold setting. Open the hood of your ML320 W163 and locate the low-pressure AC service port and remove the cap. Attach the refrigerant gauge to the service port.

Is the Mercedes Benz ML320 ml430 ml500 ETS ABS?

BAS ESP ETS ABS Mercedes Benz ML320 ML430 ML500 FIX!!! An error occurred while retrieving sharing information. Please try again later.

Why do my Mercedes Benz ESP Lights Come On?

The BAS / ESP / ABS lights is not a problem with just Mercedes-Benz ML320 / ML430 models. It is a problem that has impacted all Mercedes-Benz models. We have included the top causes that trigger these lights to come on in the section below.

Why does my Bas light come on in my Mercedes Benz?

To reset the lights, start up your Mercedes-Benz and turn the steering wheel all the way to the right, then all the way to the left. Do this a couple of times. Turn off the engine. Restart. Brake Light Switch may cause BAS / ESP / ABS light to come on. It is the most common problem with Mercedes-Benz cars.

When did the Mercedes Benz ML 430 come out?

The ML 430 is an all-wheel-drive, V8-powered, four-door sports utilityvehicle introduced for the 1998 model year. The M-Class comes in three variations. There’s the ML 430, and the ML320 with a V6 engine, which costs about $8,000 less.

What’s the difference between the ML 430 and ML320?

There’s the ML 430, and the ML320 with a V6 engine, which costs about $8,000 less. Finally, there’s a hot-rod ML 55 AMG; it costs about 10 grand more than the 430. There are lots of good things about this vehicle. The ML 430 has a 268-horsepower engine that’s quite powerful. Its acceleration and braking are top notch.

Where can I find a Mercedes heater control actuator?

Mercedes part# 163 820 01 08, check fit below. Genuine Mercedes part, recently made: not been lying around. This shopping feature will continue to load items when the Enter key is pressed. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading.

Why does my air blender only blow hot air?

Common symptoms of this part failing is the fact that only hot air blows from the vents. The air coming in may be cold, your AC setting is on cold but you get only hot air from the vents. The following video will show you how to check the operation of the A/C air blend heater flap.

BAS ESP ETS ABS Mercedes Benz ML320 ML430 ML500 FIX!!! An error occurred while retrieving sharing information. Please try again later.

Why is my Blend door actuator not working?

The logic behind this is that it takes the heater a minute or two to warm up. If you have it set all the way to cold, there should be no change in temp as the engine warms. If it does change, the blend door is still letting heat through. This would narrow it down to a bad actuator or a stuck blend door.

Why is my Mercedes Benz ml430 ml500 ABS not working?

Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. ETS ABS Mercedes Benz ML320 ML430 ML500 ML230 ABS Motor not working ?

Navigation