AutoBodyRX DIY Car Repair Guides

The Ultimate Guide to Fixing Your Car Heater

Learn how to fix common car heater problems with our step-by-step guide. From checking the coolant level to flushing the heater core, keep your car heater running smoothly.

The Ultimate Guide to Fixing Your Car Heater

A hand checking the coolant level in a car's overflow tank
Checking the Coolant Level
First, ensure your car is cool before you check the coolant level in the overflow tank. It should be between the 'low' and 'full' marks. If it's low, refill it to the appropriate level with a 50/50 mix of water and antifreeze.
A hand feeling the temperature of the upper radiator hose
Inspecting the Thermostat
Next, check the thermostat. If your car is overheating or not getting up to operating temperature, your thermostat may be to blame. You can check it by feeling the upper radiator hose when the car is warmed up. If the hose isn't hot, the thermostat is likely stuck closed.
A garden hose flushing out a car's heater core
Flushing the Heater Core
Finally, if your coolant level is fine and your thermostat is working, you may need to flush the heater core. Disconnect the heater hoses at the firewall and use a garden hose to flush out the core. Be careful not to damage the heater core as it can be expensive to replace.

Are you tired of freezing in your car during the winter months? Is your car heater not working as it should? Don't worry, we've got you covered! In this ultimate guide, we will walk you through the steps to fix your car heater and get it running smoothly again.

Step 1: Checking the Coolant Level

The first thing you should do is check the coolant level in your car's overflow tank. Make sure your car is cool before doing so. The coolant level should be between the 'low' and 'full' marks. If it's low, simply refill it to the appropriate level with a 50/50 mix of water and antifreeze.

Step 2: Inspecting the Thermostat

If your car is still not heating up properly, it's time to inspect the thermostat. An overheating car or a car that's not getting up to operating temperature could indicate a faulty thermostat. To check if the thermostat is working, feel the upper radiator hose when the car is warmed up. If the hose isn't hot, it's likely that the thermostat is stuck closed and needs to be replaced.

Step 3: Flushing the Heater Core

If the coolant level is fine and the thermostat is working, the issue may lie with the heater core. To flush the heater core, start by disconnecting the heater hoses at the firewall. Then, use a garden hose to flush out the core. Be careful not to damage the heater core, as it can be expensive to replace.

By following these simple steps, you can fix your car heater and enjoy a warm and comfortable ride. However, if you're not comfortable performing these repairs yourself, it's always best to consult a professional. At AutoBodyRX, we have a team of skilled technicians who can diagnose and fix any car heater issue you may have.

Don't let a faulty car heater ruin your driving experience. Trust AutoBodyRX to provide you with the best car repair services. From leather seat repair to fixing car dents, we have the expertise to keep your vehicle running smoothly. Contact us today and let us take care of all your car repair needs. Stay warm on the road with AutoBodyRX!