Hyundai tucson ac blowing hot air - Jul 28, 2019 · Question type: Maintenance & Repair. My 2015 Hyundai Tuscon started developing an issue where the AC just. stopped blowing , it happened in the middle of a road trip. I checked fuses , all. seemed good, so I toggled the control to heat and it started working m then I. set it back on AC and it worked ....for a while intermittently.

 
HYUNDAI TUCSON AC PRESSURE SWITCH REPLACEMENT LOCAITON REMOVAL, AC NOT WORKING FIXIf you have Hyundai Tucson and you need to replace A/C AC pressure switch o.... Jimmy john's free birthday

The most common causes for AC blowing hot air in Hyundai i30 are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube ...1. With the vents turned on low, when I click the main (dash) vent button I immediately hear the clicking noise, which will either stop after about 7 seconds, or if I turn it back off. 2. Same for floor vent button. 3. Defroster button does not make the clicking, and is the only one working 100%.It doesn't look much like the one in the diagrams that wongpfh kindly posted, but it isn't working and after removing it, adjusting the flap by hand blows nice hot air out of the vents. So, for anyone with the same problem on a RHD Tucson, the actuator on the driver's side controls which vent the heater blows air out of.AC fan not blowing hard enough. Jump to Latest Follow ... On my '08 Tucson....I just changed the Blend Door Actuator on our "new" car. ... Hyundai Forum is a community for all Hyundai Owners to talk and learn all about their favorite subject: Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less .Hello good morning my name's Caesar and I have a 2012 Hyundai Tucson 2.0 L and I'm having a problem with the air conditioning system where it starts blowing cold but after 8 or 12 minutes it starts blowing cool like outside air the AC compressor disengages and is not working at that point. I was wondering if I could get some help with this I did do a Evac and recharge and vacuum and I put 1.1 ...First, check the condenser to make sure it's not blocked by any debris. Inspect the cabin air filter (if equipped) to verify that it is not clogged. Determine if the blend door is moving. Check the system pressure. If it's low, you'll need to charge it and find out where the leak came originated.The A/C in my 2005 Hyundai Santa Fe blows hot air anywhere from 5 min after I turn it on to 15 min. Then all of a sudden the air turns very cold as if a switch was flipped. ... Hello!! My Tucson is not blowing cold air, we took it to the dealer and they said nothing was wrong. it will blow cold and then all of a sudden switches to warmish ...When the air conditioning in your 2014 Hyundai Tucson goes out, head to Firestone Complete Auto Care for Hyundai A/C service and repair. Schedule an Appointment ... An A/C blowing hot air has several possible root causes. There could be an issue with your compressor clutch, a blown fuse, a leak, or a clog in the expansion valve. ...When the air conditioner in your 2013 Hyundai Sonata starts blowing hot air, you likely have a freon leak. 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 freon.Less common causes are dirty or sluggish blower motor and faulty mode door actuator. 1. Clogged cabin air filter. Dirty AC filter is the leading cause of weak AC airflow in Hyundai Santa Fe. The pollen filter, also known as the cabin air filter or microfilter, is responsible for filtering the air that the passengers breathe in the cabin.1) The part is located to the side of the driver side foot under the panel. 2) Remove the sensor (Look at the picture) 3) Use a small Phillips screwdriver to remove the Blend door actuator, about 3 little screws. 4) Attach the new Actuator to the sensor cable, turn your car on making sure is parked, and adjust the temperature to test the new ...It will give you a better picture of the condition of your ac once you get the reading from both. Do you hear the compressor kick in? Also never use those 134-a cans with sealants. Just use plain ones. Its very possible that your heater blend door actuator (heater valve) is broken. Stuck on full heat 90 deg. Hence the hot air even with ac on. my daughter's hyundai elantra 2002 gls air conditioning works fine for 7 or 8 minutes and then the compressor stop and start blowing hot air. i had to wait until the car engine is cool for the compres … When the air conditioning in your 2013 Hyundai Tucson goes out, head to Firestone Complete Auto Care for Hyundai A/C service and repair. ... Hot air is a common Hyundai Tucson A/C problem, but it's not the only issue you might encounter. ... An A/C system that starts off blowing cold air but then turns warm can mean there's a malfunctioning ...Feeling Hot? If your A/C isn't working then you're hotter than most! Having a working air conditioner is a pretty essential part of driving your car. If your...Equip cars, trucks & SUVs with 2006 Hyundai Tucson Cabin Air Filter from AutoZone. Get Yours Today! We have the best products at the right price. ... Why Does Your Car Overheat When the AC Is On? Car AC Blowing Hot Air; Does the Car AC Use Gas? How to Get Rid of a Musty Smell in Your AC; How to Use Car Defrosters;First, check the condenser to make sure it's not blocked by any debris. Inspect the cabin air filter (if equipped) to verify that it is not clogged. Determine if the blend door is moving. Check the system pressure. If it's low, you'll need to charge it and find out where the leak came originated.Santech A/C Compressor Control Valve MT3400. Part # MT3400. SKU # 44578. Year Warranty. Check if this fits your 2014 Hyundai Tucson. Notes: VS18E PV6. PRICE: 71.99. $7199. Select store.A technician will diagnose your 2022 Hyundai Tucson heater using the symptoms you report as a starting point. Because your 2022 Hyundai Tucson heater is a complex mechanism that uses an electric fan to blow air through a heater core that is heated by the engine coolant, the problem could be electrical, mechanical, coolant-related, or a combination of these systems.AC blowing hot air. Tags 2022 air conditioner elantra n line. Jump to Latest Follow ... Hyundai Forum is a community for all Hyundai Owners to talk and learn all about their favorite subject: Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less .The blower motor is the central component of the air conditioning system in Hyundai Sonata, responsible for blowing hot or cold air through the AC vents. If the blower motor stops working due to a fault, the air will not flow out of the vents when you switch on the AC in your Sonata. Hyundai Sonata - (lev radin / Shutterstock)2009 santa fe ltd dual temp control. drivers side blows hot air and passenger side only cold or cool air even with heat turned to ... 2008 Hyundai Azera The AC unit is not cooling the car to desired temperature. ... HYUNDAI: VENTS..COLD AIR..PASSENGER..BLOWER WAS COMING. I HAVE A 06 HYUNDAI TUCSON THAT HAS LOW HEAT COMING FRONT DRIVERS VENTS ...The air intake control button's regulate the airflow in your Hyundai. When the recirculated air option is selected, the air inside the car is recycled through the vents. Climate control on Hyundai Tucson - (photo by Hyundai) When the indicator light is off, that is called fresh mode. That means fresh outside air is coming in to the cabin.At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. If the heater has stopped working in your Tucson, this process has failed in one way or another.When the air conditioner in your 2016 Hyundai Tucson starts blowing hot air, you likely have a freon leak. 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 freon.The 2016 Hyundai Tucson has 30 problems reported for a/c intermittently blows warm air. Average repair cost is $580 at 11,050 miles. (Page 2 of 2)Jun 27, 2022 · By changing the temperature of your AC system, you can temporarily stop the noise due to a faulty blend door actuator. You may also contact a professional to fix any major issues in the blend door actuator. These are some of the solutions to the Hyundai Tucson air conditioning problem. We hope this article on the Hyundai Tucson air conditioning ... 3. Warm Air is Blowing. When you turn on the air conditioning, you expect to feel cold air pour out. However, when the AC pressure switch goes bad, warm air might be all you get. However, this problem is also caused by low refrigerant levels, which should be checked regularly. 4.The most common causes for AC blowing hot air in Hyundai Accent are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube ...3. Warm Air is Blowing. When you turn on the air conditioning, you expect to feel cold air pour out. However, when the AC pressure switch goes bad, warm air might be all you get. However, this problem is also caused by low refrigerant levels, which should be checked regularly. 4.Faulty Compressor. A faulty compressor will not move the refrigerant through the system properly. Here are the four main reasons why your Tiburon’s may not be working: Clutch Cycling Switch – AC systems use an electromagnetic clutch to activate the compressor. When this switch fails, your air conditioning will only blow warm air.2013 Tucson ac blowing warm air. Compressor comes on and stays on. Mechanic's Assistant: ... I have a 2012 Hyundai Tucson that is blowing warm air with the ac on. Low pressure gauge shows 30 psi. ... my air condtioner blows hot air after drivin 6 to 10 hrs straight ,when i pull over to get gas I turn the car off and when i leave the ac …Sep 2, 2023 · 5. I let it idle for 10 to 15 minutes, and the condenser fan ran continuously and the A/C blew cold the entire time. 6. Satisfied with my repair, I wrapped the spliced wire tight with electrical tape and zip-tied it to the bracket where the connector was located. The completed repair. Hyundai Tucson The AC on the drivers side of my 1.6 Limited only blows hot air. The passenger side blows cold. ... Hi , my 2008 Sante Fe is only blowing hot air from passenger side of car- cool air coming out driver side - any help would be great also any idea of $$ to fix- thanks ...1. With the vents turned on low, when I click the main (dash) vent button I immediately hear the clicking noise, which will either stop after about 7 seconds, or if I turn it back off. 2. Same for floor vent button. 3. Defroster button does not make the clicking, and is the only one working 100%.At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. If the heater has stopped working in your Tucson, this process has failed in one way or another.The ac started blowing hot air and not cold. Mechanic's Assistant: Has the engine overheated recently? Do you see any coolant leaks? Not at all. Mechanic's Assistant: What's the make, model, and year of your car? 2016 Hyundai Tuscon. Mechanic's Assistant: Is there anything else the Hyundai Tucson Mechanic should know before I connect you? Rest ...I was in about 25 minutes of bumper to bumper traffic yesterday, on a 92 degree day. The ac was not blowing cold air, and the car was hot. I tried it in auto and manual mode. Same result. Once we got out of traffic and we got moving, the car cooled down. The ac light still never illimuniated though in auto mode.Recalls are federally required to address safety concerns. Service campaigns are Hyundai repairing problems before they become problems. 70% of "recalls" you have done are actually just minor updates/repairs that are referred to as service campaigns. Service writers use the two terms interchangeably though they're very different. 1. Reply. Share.I bought my 2011 Hyundai Sonata Limited 2.0T in 2013 with 22,000 miles on it. Now it has 123,500 miles. About 2 weeks ago, my driver's side began blowing cold air when set to heat, or the ac air when ac was/is on, but the passenger side is fine. I found this out because I needed to use the defroster, as it was very humid out at night.The ac starts blowing cold air, but turns to hot air, All of them, 2014 tucson, the high pressure shows 226 - Answered by a verified Hyundai Mechanic. ... I have a 2012 Hyundai Tucson that is blowing warm air with the ac on. Low pressure gauge shows 30 psi. Compressor does not engage.Well, my a.c. is blowing hot air ...and also my blue linc is on constant downloading. No not yet .. 2015 tucson - Answered by a verified Hyundai Mechanic ... When the car is in stand still traffic the Ac gets warm when I accelerate ... I have a 2012 Hyundai Tucson that is blowing warm air with the ac on. Low pressure gauge shows 30 psi.First, check the condenser to make sure it’s not blocked by any debris. Inspect the cabin air filter (if equipped) to verify that it is not clogged. Determine if the blend door is moving. Check the system pressure. If it’s low, you’ll need to charge it and find out where the leak came originated.The most common causes for AC not cooling properly in Hyundai Tucson are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty condenser or evaporator coils, dirty or sluggish blower motor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty …Air conditioning pushes out HOT air when on Max and warm air when on normally. Haven't yet checked the fuses but not sign of engine load when air conditioner switched on. ... Hyundai Tucson The AC on the drivers side of my 1.6 Limited only blows hot air. The passenger side blows cold. ... i have a 2006 hyundai tucson and it keeps blowing the ac ...64 Answers. SOURCE: hyundai tucson 2006 start overheating out of. Waterpump, seems like a likley culprit. Your Ac compressor belt runs over your water pump. when the ac is on it puts more load on your engine , your water pump may be defected and not able to handle the extra load. Posted on Apr 17, 2010.The blower motor is the central component of the air conditioning system in Hyundai Palisade, responsible for blowing hot or cold air through the AC vents. If the blower motor stops working due to a fault, the air will not flow out of the vents when you switch on the AC in your Palisade. Hyundai Palisade - (Luxury Fred Sherman / Shutterstock)I have a 2017 Hyundai Tucson Limited. It has dual air/heat. The passenger side blows heat but the driver's side does not. It has no temperature difference between ac and heat. ... I just took my car to a repair shop because the air conditioner was blowing hot air. Previously, the driver's side was cold and the passengers side wa very hot. Then ...Hi Ron, 2017 Hyundai Tucson, blows only cold air. Hoses to the heater core are hot both in and out. I think it's the control of the heater duct door, not sure where it is or how to test. Hello and thank you for using Just Answer. My name is ***** ***** I will do my best to assist you. During this conversation you will be given an automated ...1. Cool off the interior first before while you use the fan without AC. Open your windows and vent the majority of the hot cabin air out while setting your cabin air system to full fan speed, 100% cool, AC off, and intake mode. This will ensure the duct system is cooled off as well as the interior air it recirculates. 2.Oct 2, 2019 · Air blows out of the system even when you turn it off. If you want to shut it off completely, you have to hit the circulation button and air will stop coming out, though it disables after some time and starts blowing air back in, and you have to hit the circulation button again. It is normal behavior for the Ioniq. 1,100 miles. On July 22, 2016 we drove our newly purchased (June) 2016 Tucson from Richmond, VA to Charleston, SC. After driving continuously for the first 250 miles of the 400 mile trip the air conditioner started blowing hot air. We drove for approximately 50 miles with no cold air in 90 plus temperatures.First, check the condenser to make sure it’s not blocked by any debris. Inspect the cabin air filter (if equipped) to verify that it is not clogged. Determine if the blend door is moving. Check the system pressure. If it’s low, you’ll need to charge it and find out where the leak came originated.First, check the refrigerant level and replace if low. Next, clean or replace the air filter and check for any leaks. Use a uv dye to pinpoint any leaks, then seal them with an appropriate sealant. Regular maintenance, such as cleaning the condenser and checking the compressor, can also extend the lifespan of your ac system.Less common causes are dirty or sluggish blower motor and faulty mode door actuator. 1. Clogged cabin air filter. Dirty AC filter is the leading cause of weak AC airflow in Hyundai Tucson. The pollen filter, also known as the cabin air filter or microfilter, is responsible for filtering the air that the passengers breathe in the cabin.heater blows cold air A/C stopped working heater core engine complaint electrical issue heater complaint transmission complaint paint defect Tucson recall. Maximize. The 2016 Hyundai Tucson has 2 ...14. Plastic bag stuck on the exhaust pipe. The cause of the burning smell in your Tucson could be as simple as a piece of garbage, like a plastic bag, stuck on the exhaust system. Inspect the undercarriage of your vehicle for any sign of garbage, including the muffler, the exhaust pipe and the catalytic converter. 15.Driver side seem working very well with cold air blowing out But on the passenger side, hot air blowing out. I turned on Dual mode, leave driver side with 70F and turn down passenger side for 65F and now it blow cold air. Then I tried to turn off Dual mode, leave both of them at 70F and it happens again, cold air on Driver side and hot …For More Info visit us at: http://1aau.to/h/cBh/It's hot out, and your AC isn't blowing cold. What now? Watch this video! Andy shows you several common failu...1. Low coolant or air in the cooling system. Low coolant level or air in the cooling system can cause the heater to stop working properly in Tucson. If the cooling …The most common causes for AC blowing hot air in Chevy Colorado are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Less common causes are clogged expansion valve or …Reason #3: Faulty Thermostat or Wrong Setting. A faulty thermostat setting actually happens pretty frequently. Sometimes buttons get bumped or switches get moved accidentally and your system could actually be set to "heat" or the fan could be set to "on". If the fan is running continuously, the air may feel warm when the air conditioner ...Hyundai Tucson: Manual climate control system / Heating and air conditioning. Hyundai Tucson (LM) 2010-2015 Owners Manual / Convenient features of your vehicle / Manual climate control system / Heating and air conditioning. 1. Start the engine. 2. Set the mode to the desired position. To improve the effectiveness of heating and cooling; - Heating:97157-3T000 Genuine Hyundai Intake Actuator Assembly. Genuine 97157-3T000 Intake Actuator Assembly fits 2014-2023 Hyundai Palisade, Tucson. HyundaiPartsDeal offers 971573T000 for $38.42. www.hyundaipartsdeal.com. Make sure you complete the "Check Fit". Note the diagram calls out one on the right side and one on the left.Hyundai Tucson a/c starts out cold air then starts to blow hot air then goes back to cold air - Hyundai 2006 Tucson question. Search Fixya. Browse Categories Answer Questions ... that is on the engine coolant circuit and only provides hot air. The AC compressor system has an 'evaporator' up in the dash and only supplies chilled air. I …Noticed yesterday that the AC on my 2017 Tucson is not working properly. With the AC on high and temp set to lowest cold setting, it'll blow cold air and then warm air and it'll keep cycling between the two, cold and then warm. I have not done anything different to the car since I bought it in October 2016.Fuse box diagram (location and assignment of electrical fuses and relays) for Hyundai Tucson (TL; 2016, 2017, 2018, 2019, 2020, 2021).I have a 2011 Hyundai Tucson. The a/c has gradually deteriorated over time to the point where it no longer produces cold air. I suspected a low charge and bought an Avalanche recharge kit from the local auto parts store. When I connect to the low side with everything running I get a pressure of ~95 psi. I live in Florida and the temp was 90+F.Used the heater, then tried to use Air conditioner, now only blows heat, even when i move the temp control to - Hyundai 2006 Tucson question Search Fixya Press enter to search.The heater may stop working in Hyundai Tucson due to low coolant level or air in the cooling system, clogged heater core, bad thermostat, faulty blend door actuator, bad water pump, dirty cabin air filter, bad blower motor, or HVAC control unit malfunction. 1. Low coolant or air in the cooling system. Low coolant level or air in the cooling ...T. trooper10 Discussion starter. 2 posts · Joined 2011. #1 · Aug 22, 2011. I traded my 2006 Sonata for a 2012 Tuscon a month ago. I love the car, but the ac never gets cold. It blows cool then warm then cool then warm. I brought it to the dealer and they had it for a week, said they refilled and replaced almost everything, and said it was fixed.Question type: Maintenance & Repair. My 2015 Hyundai Tuscon started developing an issue where the AC just. stopped blowing , it happened in the middle of a road trip. I checked fuses , all. seemed good, so I toggled the control to heat and it started working m then I. set it back on AC and it worked ....for a while intermittently.This is Part 1 of 2 fixing a no a/c complaint on a Hyundai Santa Fe. Sometimes it takes just a quick visual inspection to find the problem. Thanks for chec...The AC is kicking on…. Working on a 2005 Hyundai Tucson V6. The AC is kicking on and off occasionally not working properly. We did a full system service and charged it to system specs. I Heard a clicking sound under the passenger side - and there is a relay that's getting excessively hot. What is this relay and could the relay be defective ...2014 Hyundai Tucson Performance Air Filter; 2014 Hyundai Tucson Transmission Filter (A/T) ... Why Does Your Car Overheat When the AC Is On? Car AC Blowing Hot Air;bluecar1. 8354 posts · Joined 2016. #5 · May 30, 2018. the AC runs off the traction battery so is independent of the ICE. but the car needs to be "ON" for the AC to run because of the drain on the traction battery. 2022 Intense Blue Hyundai Ioniq PHEV Premium SE. Location Kent, UK. Save Share.6 Common Causes Of Air Conditioner Blowing Hot Air. #1 Low Refrigerant Levels Are The Cause Of AC Blowing Warm Air. #2 Faulty Compressor Leading To AC Blowing Hot Air. #3 Clogged Filters (Not …The most common causes for AC not cooling properly in Hyundai Tucson are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty …Heater Intermittently Blows Cold Air. My 2011 hybrid just yesterday started to blow cold outside air from both the left and right side vents, even when I had the heat turned up to max. Then magically it will go back to hot again like normal. Up to now, the climate controls have been flawless and no issues whatsoever.

heater blows cold air A/C stopped working heater core engine complaint electrical issue heater complaint transmission complaint paint defect Tucson recall. Maximize. The 2016 Hyundai Tucson has 2 .... Ycdf inmate search billings mt

hyundai tucson ac blowing hot air

Jun 30, 2020 ... Cold Heat? Hot AC? Diagnose Temperature Problems In Your Car or Truck. 1A Auto: Repair Tips & Secrets Only Mechanics Know · 197K views ; AC Blows ....This is Part 1 of 2 fixing a no a/c complaint on a Hyundai Santa Fe. Sometimes it takes just a quick visual inspection to find the problem. Thanks for chec...2. Malfunctioning A/C control head (panel) 3. System is possibly UNDERcharged (insufficient refrigerant) 4. Malfunctioning Tripple Switch (the switch monitors pressure in the system: i.e., if pressure is too high, it will shut down the A/C; if pressure is too LOW, it will shut down the A/C) If this switch is malfunctioning, it can cause the ...The cooling system and AC system are tied together somewhat. The condenser in the front of the radiator will remove the heat from the system, and it's the climate control module that tells the engine computer when to turn on/off the compressor. If the engine was running too hot, that could have told the climate control module to shut off the ...Surprisingly none during the day (~100 at the time) all happened at night. I would drive somewhere with the A/C on with no issue, however when I would get back in my car 5-30 minutes later nothing would come on. The A/C and recirculate light would come on as usual, but no air at all from the vents. I tried restarting the car, checked the fuses ...Jul 1, 2023 · 97157-3T000 Genuine Hyundai Intake Actuator Assembly. Genuine 97157-3T000 Intake Actuator Assembly fits 2014-2023 Hyundai Palisade, Tucson. HyundaiPartsDeal offers 971573T000 for $38.42. www.hyundaipartsdeal.com. Make sure you complete the "Check Fit". Note the diagram calls out one on the right side and one on the left. 2015 Hyundai Tucson - AC not blowing cold. A month or so ago, my car stopped blowing cold air. It was working fine and then over the course of a week just gradually declined. Took it to a Mechanic and they said it had no refrigerant,, so they recharged it. Worked fine for about a month and then it stopped blowing cold air again.I figured it was the car being hot since it it black and it was sunny & I did have the car running. I tried using the Ac yesterday and it was blowing slightly colder air but still warm. I don't know what the problem is and so I went to my moms elantra to compare since we have the exact car just different colors and her car was blowing air as if ...Limited cooling. One of the first signs that an AC thermistor may be having a problem is that the AC will only blow cold air for a limited amount of time. If an AC thermistor is not operating properly, it cannot alert the computer of the cabin temperature. Therefore, the module will not be able to activate or deactivate the AC so that the ...One goes to the radiator; the other goes to the dashboard. 3. Measure the temperature of the air coming out of the vents. The temperature of the air coming out of your vents tells you a lot about where the problem is. Grab a meat thermometer and stick it in one of the vents. Wait a few minutes to get your reading. [4]Oct 2, 2023 · Experiencing hot air on one side of your Hyundai Tucson’s AC system while the other side blows cold air can be puzzling and uncomfortable. This issue is known as temperature imbalance and can disrupt the overall cooling effectiveness. Here are possible causes of hot air on one side of your Hyundai Tucson: I have a 2011 hyundai sonata with $96k miles which suddenly started blowing warm air when the AC is on. I have done the following to help isolate the problem. 1) I have checked all the relays and the fuses, they all seem fine. 2) If I put 12 volts on the compressor connector I hear it click (I have done this at the fuse box side, so I know the ...1) A problem with the refrigerant system. Meaning, the refrigerant used has escaped and there is not sufficient refrigerant to pressurize the system properly, …At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. If the heater has stopped working in your Tucson, this process has failed in one way or another..

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