Hyundai Tucson Heater Not Working – How To Fix

By Max Anthony •  Updated: 05/09/22 •  3 min read

One of the most popular car manufacturers in the world is Hyundai. Founded first in 1967, it has grown to become one of the leading car manufacturers in the world.

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It is well known for its quality and reliability, and is also a great choice for those who want a practical vehicle that can provide comfort on long journeys. However, car owners have reported issues with its heating. For one, they may find that no heat comes from the heating system one day. If you are an owner of the Hyundai Tucson and you live in a place with a cold climate, you’d want your car heater to continue working as it is supposed to. We’re here to help.

Here’s what you can do about a malfunctioning Hyundai Tucson heater:

Check for a faulty thermostat

The temperature of your Tucson engine is set by your thermostat.  When the engine is hot, the fan allows water to enter, but the coolant cannot enter when the vehicle is warming up.

If the heater seems to be malfunctioning, you should check for a faulty thermostat. You can do this by testing out different heat settings in your car. If it doesn’t seem to work properly, then you know that the thermostat is faulty and needs to be replaced.

The coolant or antifreeze is running low

In the event that your Tucson’s heater doesn’t work, then it is likely that the coolant has run out. This can be caused by a blocked radiator, or a failed cooling system.

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It is possible that your engine will run hotter because of not having enough coolant, but it is also possible that it may cause your engine to not be able to create enough heat.  When there isn’t enough line pressure, the heater core will not be able to receive any coolant.

The coolant should be checked to see if it is getting low, and to make sure that there are no other issues with your cooling system. If you find that the coolant is running low, then you should drain the coolant in your car and replace it with new coolant before your heater stops working again.

There is something clogging the heater core

If you are not able to find any other issues with your car, then it is possible that there is something clogging the heater core.

If this is the case, then you should get your car serviced as soon as possible to prevent further damage to your engine. You can also try checking for a clogged filter, which may be causing the heater core to be blocked.

Check for issues with the water pump

If you check your temperature gauge and see that the engine is running hotter than normal, but there is no heat coming from the heater, you may be experiencing problems with the water pump.  Take the vehicle out of gear and rev your engine a little. When you feel that your heat is starting to blow hot for a short time, that’s a sign of a bad water pump or a low coolant.

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Max Anthony

Max is a gizmo-savvy guy, who has a tendency to get pulled into the nitty gritty details of technology and cars. He attended UT Austin, where he studied Information Science. He’s married and has three kids, one dog and a GMC truck and a Porsche 911. With a large family, he still finds time to share tips and tricks on cars, trucks and more.

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