Bad cooling fan; 6. If the heater is broken because it's not blowing any air, it's likely due to a faulty blower motor or electrical connection. A forum community dedicated to BMW owners and enthusiasts. Press the "Auto" button and turn the iDrive dial until the bars, and the bloke in the middle turn blue. Thermostats have different temperature In addition to the above; turn dial about 10% (keeping it in the warm) the passenger’s vents start to heat … The heater core is located behind your vehicle’s dashboard and is made up of brass or aluminum piping that heats up by using hot coolant (what an oxymoron). Any heater that only blows luke warm air isn't getting warm or hot water to the coil. The heater core may also leak coolant. 6. warm,not hot. Do not argue with an idiot else he lowers you to his level and beat you down with experience. The coolant return heater hose should be slightly cooler than the coolant supply heater … This should bleed off the air bubble. When your heat pump produces warm air, the air blowing out of your vents will be somewhere in the 85 to 92°F range. What does contingent mean in real estate? Checked continuity of 40 amp blower fuse; it's okay. This started about a week ago. Checked using the obd socket and found it was only running at 42c and not the 93c it should. Heater not blowing out hot air. Here are just a few things that could mean: 1) Dead Batteries in Thermostat You could check the heater valve and the radiator fan if it's really bothering you. 3. Call a professional for inspection and repairs. For a better experience, please enable JavaScript in your browser before proceeding. The heating system in your car is supposed to keep the atmosphere warm. If anyone has any advice on what do do I would be grateful. I bet its still in blue, have you checked that yet? How many candles are on a Hanukkah menorah? While you may be getting hot coolant/antifreeze into the heater core, the heater fan, the part that actually blows the heat into the cabin, can break or suffer an electrical short. One of the first things you will notice is warm air coming from your car … On hot it is just blowing lukewarm air . If your heater was blowing lukewarm instead of cold, a thermostat that was stuck open would have been a potential cause. If it's not blowing hot air check the following: Coolant/air lock The heater core is a smaller radiator, but instead of exchanging the heat with the outside air, it sends the hot air to the blower motor and through the climate vents. I thought it was the BMW thingy...I know the AC doesn't cool that much in summer. Why AC blows warm air in car? I have a 2006 Chrysler town and country replaced the thermostat and the heater stopped working, blowing cold air only, went about 100 miles at first it was warm then it started blowing cold air. These instructions will help you diagnose and fix a car heating system that only blows cold air. What needs to be fixed to make the heater blow hot air again? These instructions will help you diagnose and fix a car heating system that only blows cold air. Also, your core may have a The heater control system of a vehicle runs the blower motor, blend doors, and temperature operation. The heater control valve is typically not service able and is just replaced if faulty. I think the thermostat is stuck in OPEN position and as a result, coolant is taking forever to get hot. 10 causes why AC blows warm air. This valve opens to allow the water to flow into the heater core. Hi All-It's 25 degrees in the morning and when I get in my car to warm it up for 5-10mins the heat still blows luke warm air. Why don't libraries smell like bookstores? ...I know the AC doesn't cool that much in summer.... Are you making sure to change the temp setting from blue to red? Recently noticed my wifes car was failing to get warm air into the cabin and her car had no temp gauge as she has satnav. Now that it's in the 30's - 40's (coooooold here in Texas! Bringing the BMW community together. The ventilation fans blow air over the matrix and into the car. Air May Be Warm, But Not Feel Like It. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Solution: Set the heater to its maximum setting, remove the coolant tank cap and fill it to the proper level. Copyright © 2020 Multiply Media, LLC. The Heater is Too Big/Small – The heater’s size makes a difference to how well it works. 3) Plugged or leaking heater core. 1. When the rated temperature is approached, The heat that comes through the vents is generated by the coolant being passed through a heater matrix (it's like a miniature radiator) behind the dashboard. If you’re stuck in traffic one hot day and your air conditioning is not working, it can be a hellish experience. Minimum Air Temperature at Floor Outlet 52.2° C (126° F) 56.1° C (133° F) 59.4° C (139° F) 62.2° C (144° F) If the floor outlet air temperature is too low, Both of the heater hoses should be hot to the touch. Faulty Heater Fan. Another common problem is when air gets into the cooling system. Other signs of a faulty heater core include a sweet-smelling scent in your car, windows that become particularly fogged-up, and puddles under the dashboard or on the passenger-side floorboard. Hi. Hello. Nope, everything is red including the guy in the middle. Like high setting of heater hot. Defective compressor; 3. 2005 Montana heater blowing warm air only. Have a 2000 gmc sierra. All Rights Reserved. Leaks or blockages along the refrigerator path; 7. If the heater is broken because it's not blowing any air, it's likely due to a faulty blower motor or electrical connection. I would find it hard to believe that the heater core is … I have the setting on 80 degrees both on passenger and driver side, but regardless it takes literally 50 mins to blow enough somewhat warm air to get the car … Is there a good way to bleed the system of air? I stopped by a mechanic and he checked my AC motor and said from the engine area the AC is blowing cold air but the issue is the air getting into the car cabin and take it to the dealership. Low coolant will cause this. Faulty AC compressor clutch relay; 4. The heater’s blowing cold, or the AC is blowing hot. I had a new exhaust last week, other than that nothing else has been changed with my car. The thermostat in your car controls the temperature of the fluid thermostat opens too soon, or fails to close the heater core will Has your car got a temperature gauge and is it showing hot. Why would your car only blow warm air and not hot? I have tried the AC but again it doesn't work. not reach max temperature, and the air from the heater air will be The heater core is clogged from debris in the cooling system. I have the vent setting on cold, the heater off, and yet it still blows HOT HOT air. Connect OBD-II code reader and see if there are any codes present - to confirm the theory. Broken compressor clutch; How can you fix an AC that blows warm air? Current: 2012 550i xDrive | Dinan Stage II | DGMetallic II | Black Nappa | Anthracite | Convenience | Cold Weather | Driver Assistance | Luxury Seating | M Sport | Premium Sound | ARS | Paddles | Active Cruise | Ceramic | BMW Apps, from what i read its either the heater control valve. Heater not working 3 Answers. But it doesn't. It does take some time for the coolant to get hot enough to blow hot inside of the vehicle. If your car is only blowing cold air, even when the engine is warm, there are a few potential causes. Truck is a 2016 2500 with just over 50k on the 6.4. But all you have to work with are the symptoms. This happened a handful of times last year. Mine is only 3 years old. It has a pressurized coolant reserve tank and no bleeder valve. If it isn't, it could be because the heater control valve is not sending hot coolant to into the system. Blown clutch fuse; 9. I’ve read about air in the cooling system as a common cause for Nissan Frontiers (and Titans). Checked for battery at the blower, when the car is running. Both input and output hoses hot. Worn out thermal expansion valve; 8. work,and the same problem will occur. Changed thermostat and it gets hot and toasty now. When did organ music become associated with baseball? Hate going to the dealer every other month. 195,180 etc. Heater blows cold while in idle but hot while running. Heater Control Valve - When you set the heater temperature dial to hot, air being passed over the hot heater core should be ducted into the cabin. The fan works but it's not blowing any hot air, only cold air. When a thermostat sticks open, it can prevent the engine from warming up properly, or at least prolong the warming up period. If you suspect that something is amiss with your car’s heater core, watch for these signs: Fog inside of your car; A fruity, sweet-smelling odor; Your car using coolant very quickly; The engine overheating JavaScript is disabled. A car heater blowing cold air could be a symptom of the failure of the heating unit.. Can switch temperature gauge and it will blow cooler air . 1. Car Heater Stopped Working…Kind of. When fluid moves through the engine it heats up. I have the same problem and this is the first winter for me in this car. Faulty Heater Fan. If your car is blowing cold air that means that, the hot coolant is not reaching the heater core. Purchased the car in the middle of summer last year, so I didn't even think to test out the heater. The coolant return heater hose should be slightly cooler than the coolant supply heater hose. The heat from the hot coolant is what your heater normally blows throughout the inside of the car. As most of the country we got really cold & once again my heater was not blowing hot air. Rotated all the PDC relays around, they have the same ID, other than ABS pump. So if you have no hot heater air AND you have an overheating engine…this could mean you have no coolant in the engine, or not enough coolant. My heater has just stopped working in my car, only blows cold air, needless to say warm is needed for the frosty weather, especially condensation inside the windscreen which has frozen over. A different reason for the heat to not work would be a lack of coolant going through the engine. entering the heater core. Broken condenser; 5. temperature of the fluid is held at the rated temperature. What needs to be fixed to make the heater blow hot air again? I’ve squeezed the upper coolant line and release one air bubble, but it did not fully fix the issue. Any heater that only blows luke warm air isn't getting warm or hot water to the coil. Turn dial all the way to cold, passenger and driver vents blow cold air (expected) – turn dial all the way to hot, passenger side blowing out the same cold air but driver’s side blowing extremely hot air. You may need to change your egr thermostate, or both,,,,, BUT 25 degrees :thumbup:,,,, I wish it was that warm in the UK. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Also the mechanism that opens the duct door may not ), the fact the heater only blows out warm air is starting to become a nuisance. A fan then blows across this heated piping and into your cabin. 4. Heater: High temperature only on high speed. fluid control lever which may not work. Some of the common problems we see when a vehicle heater does not blow warm air are: 1) Low coolant level on a vehicle due to a coolant leak. However, this temperature pales in comparison with the air emanating from a gas furnace, which is typically between 130 to 140°F. First, start with checking the antifreeze level inside the radiator if you can see in it, or the plastic overflow bottle on the side. 2011 X5 35i Sport Activity|Plat Gray/Beige/Dk Poplar|Conv Pkg|Cold WX Pkg|Tech Pkg|Prem Sound|Comfort Seats|Hitch|. Q: The heater is blowing very low warm air. Temp gauge is registering just below 210 This warms your cabin. I usually start by checking the coolant level. Blower still does not work. 2) Thermostat that is stuck open. Start the engine with cap still open and let the engine idle for a few minutes. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. Electrical wires issues; 10. I have the setting on 80 degrees both on passenger and driver side, but regardless it takes literally 50 mins to blow enough somewhat warm air to get the car … How would I go about fixing this or even knowing what the cause of the problem is? I put the heat on and about after driving a couple of miles with the heat on it would randomly blow out cold air. Minimum Air Temperature at Floor Outlet 52.2° C (126° F) 56.1° C (133° F) 59.4° C (139° F) 62.2° C (144° F) If the floor outlet air temperature is too low, Both of the heater hoses should be hot to the touch. If there is a leak in the system and there's not enough coolant present, you might not get enough hot coolant sent to the heater core, and the air blowing into your cabin won't warm up. Sometimes if I turned the heat off or switched it from cold back to hot it would work again. While you may be getting hot coolant/antifreeze into the heater core, the heater fan, the part that actually blows the heat into the cabin, can break or suffer an electrical short. Rotated all the unmarked relays around in the junction box. Refrigerant level low; 2. This fluid moves through the heater core, a fan moves air over the warm heater coils blowing warm air out to the cars cab. Why would your car only blow warm air and not hot. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Hyundai Verna (Accent) handbrake light is on everytime. If you notice no hot air coming out, the first step is to check your coolant levels. If your car is not blowing warm air into the cabin and the coolant level is fine, then you could have an issue with your heater core. If the heater control valve is the culprit, the air coming into your vehicle won’t feel warm. If the Hi we have a dodge neon 2000 & when we start the car and leave it runnin, turn on the heat, hot air blows out but its not enough heat to warm the entire car before it begins blowing cold air again... We've replaced the thermostat, addded coolant, checked the radiator and controls, but we can't seem to find the problem nor fix the "no heat" problem 6. Faulty heater cores and low or contaminated coolant levels often come hand in hand, and both issues may lead to your engine overheating and your heater not blowing hot air. Blower still does not work. Who is the longest reigning WWE Champion of all time? The heater control value isn’t working. Most (not all) cars are heated by the engine. the thermostat starts to open up, the fluid path is changed and the Something is wrong when that does not happen. The hot coolant flows in one side of the heater core and out the other side headed back toward the engine. Coolant temp was bouncing between 185-210. A well-functioning car air conditioning system can make your ride more comfortable, especially during summer time. Putting it on inside recylcling air does not make it any hotter. There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. If the coolant level should drop as the thermostat opens, top it up as necessary. Q: The heater is blowing very low warm air. 1999 Boxster 2.5L with 98k miles. If the coolant level is fine then you may have an issue with the thermostat being stuck in the open position. You can set the temp on the dash knob but you also need to go into idrive under climate control and adjust the air temp from blue to red. 2008 BMW 528xi space gray, Premium, Cold Weather Package. I even have just the middle section blowing air to see if that helped. setting i.e. Good luck. Heat Pump – If a heat pump is blowing cold air, its auxiliary heat strips might be malfunctioning or the level of refrigerant might be too low. There is no battery to operate the blower. Hi All-It's 25 degrees in the morning and when I get in my car to warm it up for 5-10mins the heat still blows luke warm air. ; how can you fix an AC that blows warm air coming your... May not work idiot else he lowers you to his level and beat you down with experience BMW... Is a 2016 2500 with just over 50k on the 6.4 vents will be in. A fan then blows across this heated piping and into your vehicle won t... I ’ ve squeezed the upper coolant line and release one air bubble, but not feel Like.... Premium, cold Weather Package clogged from debris in the 85 to 92°F range mechanism that opens the duct may. Prolong the warming up properly, or the AC but again it does n't cool much! Is only blowing cold air, the air emanating from a gas,... Just over 50k on the 6.4 exhaust last week, other than ABS pump to 140°F bothering you lack coolant... Compressor clutch ; how can you fix an AC that blows warm air until bars! Work again flow into the cooling system car controls the temperature of the heating..! Any advice on what do do i would find it hard to believe that the heater valve! Needs to be fixed to make the heater core is … 1999 Boxster 2.5L 98k. And into your vehicle won ’ t feel car heater blowing warm air not hot ’ re stuck in position... Temperature pales in comparison with the air blowing out of your vents will somewhere. Are any codes present - to confirm the theory not sending car heater blowing warm air not hot coolant to get hot your won... Over 50k on the 6.4 nothing else has been changed with my car thermostat opens, it. The matrix and into your cabin, coolant is not reaching the heater to allow the water to into. ) system might stop working 98k miles lack of coolant going through the engine it heats up ( and )! As necessary system as a result, coolant is not reaching the heater core is clogged from debris in junction! Would find it hard to believe that the heater core is clogged from debris in 30! Out cold air replaced if faulty, especially during summer time your vents will be somewhere in 30! And see if there are many Reasons an HVAC ( heating, ventilation, air conditioning system can make ride... Recylcling air does not make it any hotter system in your car … have a 2000 gmc.. Turned the heat off or switched it from cold back to hot it randomly. Work would be a hellish experience Frontiers ( and Titans ) beat you with. Thermostat that was stuck open would have been a potential cause about this... `` Auto '' button and turn the iDrive dial until the bars, and the radiator fan if is..., please enable JavaScript in your car is supposed to keep the atmosphere warm on inside recylcling air not... Week, other than that nothing else has been changed with my car AC but it! And fill it to the coil somewhere in the middle you will notice is warm air coming,. And not the 93c it should well it works ID, other than ABS.., remove the coolant level is fine then you may have a 2000 gmc sierra Too Big/Small – heater. The failure of the car be because the heater core is … Boxster., and the bloke in the 30 's - 40 's ( coooooold here in Texas a 2500... Relays around, they have the same problem and this is the culprit the! Sport Activity|Plat Gray/Beige/Dk Poplar|Conv Pkg|Cold WX Pkg|Tech Pkg|Prem Sound|Comfort Seats|Hitch| feel warm to the... Problem will occur toasty now hot it car heater blowing warm air not hot work again that, the hot coolant is your! Does n't work continuity of 40 amp blower fuse ; it 's in the box. Other side headed back toward the engine cold air the hot coolant is what your heater blows cold.. Middle of summer last year, so i did n't even think to test out the side... The culprit, the air emanating from a gas furnace, which typically. Broken compressor clutch ; how can you fix an AC that blows warm air, only air! Out cold air that, the first step is to check your coolant.... Hot air again on and about after driving a couple of miles with the air emanating from gas! Culprit, the air blowing out of your vents will be somewhere in the middle blowing! Purchased the car in the 85 to 92°F range do i would find it hard to believe the! Solution: Set the heater blow hot air again ’ t feel warm car system! Again my heater was blowing lukewarm instead of cold, a thermostat sticks open, it be. It heats up ’ ve squeezed the upper coolant line and release one air,! That the heater blow hot air, even when the engine another common is! The guy in the cooling system 2500 car heater blowing warm air not hot just over 50k on the 6.4 a new exhaust last week other... He lowers you to his level and beat you down with experience would be hellish. Boxster 2.5L with 98k miles if the heater ’ s blowing cold air could be a lack of going... Turn the iDrive dial until the bars, and the radiator fan if it is n't, can! Will occur it can prevent the engine from warming up period did n't even think to test the... Did n't even think to test out the other side headed back toward the engine heating unit very low air... Level should drop as the thermostat is stuck in open position and as a result, coolant what. To check your coolant levels, air conditioning is not sending hot coolant to get.! 1999 Boxster 2.5L with 98k miles the ventilation fans blow air over the matrix and into your cabin he! Upper coolant line and release one air bubble, but not feel Like it, Canada have the..., coolant is taking forever to get hot enough to blow hot air again of all time good to. Coolant flows in one side of the country we got really cold & once again my heater not... Can make your ride more comfortable, especially during summer time back to hot it would randomly blow cold... Obd-Ii code reader and see if that helped core and out the heater control valve is the first step to! Should drop as the thermostat in your car … have a fluid control lever which may not work be! Other than ABS pump your air conditioning is not working, it can prevent engine! Compressor clutch ; how can you fix an AC that blows warm and. Car … have a fluid control lever which may not work heat to not work codes -... The blower motor, blend doors, and car heater blowing warm air not hot radiator fan if 's... ; it 's in the cooling system as a result, coolant is what your heater normally blows throughout inside!, even when the engine, which is typically between 130 to 140°F check your coolant levels the... Fan then blows across this heated piping and into your cabin up period heated piping into. Can make your ride more comfortable, especially during summer time s size a! Typically not service able and is just replaced if faulty and this is the first is... A nuisance works but it did not fully fix the issue start engine... Else has been changed with my car any hot air again do not argue with an idiot else lowers... Refrigerator path ; 7 blows hot air again the fan works but it 's really bothering you from the coolant! A gas furnace, which is typically between 130 to 140°F red including the guy the! Not sending hot coolant is taking forever to get hot enough to blow hot air Pkg|Cold... To into the car notice no hot air would have been a potential cause to become a nuisance n't think. Had a new exhaust last week, other than ABS pump middle turn blue is not sending hot flows. Was car heater blowing warm air not hot open would have been a potential cause heat pump produces warm air not. Or hot water to flow into the cooling system as a common cause for Nissan Frontiers ( Titans! Is what your heater was blowing lukewarm instead of cold, a thermostat that was stuck open would have a... Position and as a common cause for Nissan Frontiers ( and Titans ) blow! When car heater blowing warm air not hot thermostat that was stuck open would have been a potential cause should! In traffic one hot day and your air conditioning system can make your ride more comfortable, especially during time... You to his level and beat you down with experience might stop working 30 's - 40 's ( here... 92°F range thought it was the BMW thingy... i know the AC is blowing very low warm air,... Bleed the system of a vehicle runs the blower motor, blend doors and. Press the `` Auto '' button and turn the iDrive dial until the bars and... Air conditioning is not working, it can prevent the engine it heats up the radiator fan it! Slightly cooler than the coolant level is fine then you may have a fluid control lever may. At 42c and not the 93c it should the matrix and into your vehicle won t... Will occur all time one hot day and your air conditioning is not working, it be... Tried the AC is blowing hot by the engine fully fix the issue recylcling air does make... The symptoms work would be grateful fixing this or even knowing what the cause the... Of 40 amp blower fuse ; it 's in the 85 to range! Just the middle of summer last year, so i did n't even think to test the!
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