Question about 2007 Hyundai Accent GS Hatchback

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Can low engine coolant prevent the heat from working

The heat and defrost don't work

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Not really. if you are getting different air flow at different fan speeds then the problem is the mixing door that allows warm air thru to mix with the ambient air. something is preventing it from opening if you are not getting heat.
if your fan speed stays constant then something is either blocking the fan output or something is wrong with the fan itself.
check your temp gauge. if it is getting hotter then you are losing coolant and need to fix that ASAP.
last, depending on where you live, you could conceivably be not getting hot enough air. I had a car 23 years ago like that. At temps below 0F it just wouldn't get warm enough to put hot air in the car and I had to wear gloves, jacket, neckwarmer, and hat to stay semi-warm. I actually had to block off part of the radiator with a cardboard sheet. to get some heat in the car.

Posted on Nov 28, 2013


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1 Answer

Heater not working at all

The morning commute can be stressful.
But if your car heater starts blowing cold air and suddenly stops working in the middle of winter, it can make it downright miserable.
If your car has no heat, not only would the inside of your car feel like an ice box, but a broken heater can prevent your defroster from blowing warm air to your windshield to eliminate ice and fog, which can pose a hazard while driving. Not having a working heater in your vehicle could even become a dire situation, if you end up stranded.

Why is my car heating not working?

K car heater can stop working for a number of reasons, including:
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• A bad thermostat that isn't allowing the engine to properly warm up.
• A blower fan that isn't working properly.
• Coolant that contains rust particles or becomes otherwise contaminated and is blocking the heating core from circulating air into the cabin properly

Cost to fix a car heater

Most heating-related repairs range from $300 to $1,000,, but it's difficult to pinpoint an exact number because of the variety of problems that exist.
A decrease in the coolant level or a leak in the coolant system is one of the more common problems,
"Topping it off may help in the short term, but it's an indication of a deeper problem and should be checked out," "You shouldn't have to add anything at all if everything is working well. It can damage the motor if there is low heat [from too little coolant]."
leaks could be as simple as a loose hose clamp, or a major problem like a leaking engine cylinder head gasket, which can cause serious damage to the engine and cost several hundred dollars to replace.

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Why am I not getting any heat out of the heater/defroster?

If the heat selector control button is working properly and there is no heat, check level of coolant. Low coolant will be a definate cause of low/no heat. If coolant level is good, you need to check blend doors for proper operation on the heater control assembly

Oct 04, 2015 | 2005 Kia Sedona

1 Answer

Low heat good air flow

It is possible the engine thermostat is faulty and preventing the engine from getting hot enough to provide a good heater temperature.

It is possible the air mixing flaps aren't working correctly.

It is possible the heater matrix is partially blocked, has developed a thick internal coating or an air lock is preventing the circulation of hot coolant.

Mar 14, 2015 | Cars & Trucks

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Heater works in cab blower works in cabnin just not blowing heat

hot air not being directed to vents? Check vaccuume hose under hood

Jan 29, 2014 | 2002 Ford E350

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Heat stopped working in 2000 pontiac sunfire

With blower on high and tempature to max heat check to see if you have good air flow in all mode selections (defrost, vent, floor etc.). If so and you still have no heat then check heater core hose going from engine to inside car to heater core with vehicle running and coolant tempature about half on guage. If both hoses are hot and coolant in radiator/overflow bottle is full then hot cold blend door is stuck in cold position. If coolant level is low you will get no heat, check coolant level first.

Dec 18, 2011 | 2000 Pontiac Sunfire

1 Answer

I have a 1996 Dodge Intrepid witha 3.3 engine. The heat just stop working. The blower works but I am not getting much heat to warm up the car or defrost the windows. What could be my problem?

Check the coolant level if low air in the system will cause little or no heat out the vents. If coolant good I'd recommend replacing thermostat. If low would some sort of coolant leak, possible waterpump leak, or hoses if visible on the ground after filling. If no visible leaks could be head gasket leaks.

Jan 29, 2011 | 1996 Dodge Intrepid

1 Answer

My front defroster is not working at its best, however the back one is working properly. If I add any heat while trying to defrost my windows the problem get worst.

Sounds like the heater core is leaking coolant. If it is leaking it will blow steam out of defrost vents and fog the windshield. Symptoms: low coolant level in radiator, steam coming out vents when engine is warmed up, odor of anti-freeze coming out of vents, wet carpet in floorboard near heater blower motor.
If so, replace heater core.

Dec 07, 2010 | Ford Taurus Cars & Trucks

1 Answer

Am experiencing inconsistent heat and/or defrost even after engine has warmed up. Also noticed engine temperature guage is noticably running hot. Coolant level or thermostat?

Most common problem here is the coolant level. If the overflow tank is full of coolant and you are experiencing heating/overheat problems, the thermostat is likely bad (especially if you've used a sealer due to a leak). A clogged thermostat will prevent coolant from circulating and impact your heater/defroster.

Nov 23, 2010 | 2001 Ford Focus

1 Answer

My heater only blows hot air when the car is moving and cool air when I sit at idle. Also the inside window fog up if I try to use the defroster mode 1st thing.

Your heating system is dependent on hot coolant to be circulated through your heater core, which a fan blows across, and you get heat. If you only get heat when you are moving, that means that either your engine is low on coolant, or the engine's water pump is not working well. Check your coolant level when your engine is cold.

Nov 23, 2009 | 2004 Dodge Stratus

4 Answers

2004 Chevy Impala no heat from defrost or heater

No heat is often a symptom of low coolant, usually followed by overheat. There are other controls that regulate heater, but right now, re-fill the cooling system with engine running and heater on high, then check for leaks (coolant you lost went need to determine where) Low coolant will damage your engine. Take care of that first, then if heater still does not work, then do diagnosis on that. (if you loose the engine heat won't matter, will it!)

Sep 22, 2009 | 2004 Chevrolet Impala

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