2014 Jeep Wrangler Heater Not Working

To fix a 2014 jeep wrangler heater not working, check the heater control valve and replace if needed. The heater control valve regulates the flow of coolant to the heater core.

Is your 2014 jeep wrangler giving you a hard time by not generating heat? This problem can be quite frustrating, especially if you live in an area that gets chilly during winters. There are several reasons why your vehicle’s heater may not be working, but before we dig deeper, you must check the heater control valve.

The function of the heater control valve is to regulate the flow of coolant to the heater core. If it’s not working correctly, it might result in a lack of heat inside your jeep. In this article, we will help you diagnose the issue and provide a quick solution to ensure a warm and comfortable ride.

Step 1 : Checking The Thermostat

Simple Diy Fixes To Resolve 2014 Jeep Wrangler Heater Not Working Issues

As temperatures start to drop, no one wants to be driving around with a broken heater in their jeep wrangler. The good news is that you don’t need to rush to a mechanic just yet. Before spending a lot of money on repairs, there are a few simple diy fixes you can attempt.

In this post, we will be discussing how to check and replace the thermostat, which is often the culprit behind a malfunctioning heater in a 2014 jeep wrangler.

Understanding The Role Of Thermostat In Heating System

Before diving into thermostat troubleshooting, it is important to understand the role it plays in your car’s heating system. The thermostat’s job is to regulate the engine’s temperature by controlling the amount of coolant flowing through it. The engine must reach a certain operating temperature for the heater to work.

If the thermostat is not functioning properly, the engine may not be warm enough to heat the coolant, which means no heat for you.

Symptoms Of A Faulty Thermostat

A faulty thermostat can cause a number of issues, including a poorly-performing heater.

  • Engine overheating or running colder than normal
  • Reduced fuel efficiency
  • Temperature gauge fluctuating or reading higher or lower than normal
  • Check engine light coming on

Steps To Check And Replace The Thermostat

Checking and replacing the thermostat is relatively straightforward, as long as you have the right tools.

  • Turn off the engine and allow it to cool down completely.
  • Locate the thermostat housing. This is usually situated where the upper radiator hose meets the engine block.
  • Remove the housing bolts using a socket wrench and then remove the housing itself.
  • Take out the thermostat, which is located inside the housing.
  • Check the thermostat by placing it in a pot of boiling water. It should open fully once the water reaches boiling point.
  • If the thermostat is not opening or opening partially, it needs to be replaced. Place a new thermostat in the housing in the same position as the old one.
  • Reinstall the housing using new gasket and bolt, then fill up the radiator with coolant.
  • Start the engine and allow it to warm up fully, then check the temperature gauge and the heater to make sure they’re working correctly.

If the thermostat replacement doesn’t solve the issue, then you may have to take it to a mechanic for further diagnosis.

A faulty thermostat can often cause a malfunctioning heater in a 2014 jeep wrangler. By following these steps, you can easily check and replace your thermostat, and hopefully, solve the heater problems without spending a lot of money on repairs.

Step 2 : Inspecting The Heater Core

Role Of The Heater Core In Warm And Comfortable Driving Experience

The heater core is an essential component of the heating system in your 2014 jeep wrangler, and it plays a vital role in providing heat to your car’s cabin to keep you warm and comfortable while driving. If your heater core is damaged or clogged, it can cause your heating system to fail, leaving you cold and uncomfortable in harsh winter weather.

Warning Signs Of A Clogged Or Damaged Heater Core

Some of the most common signs of a clogged or damaged heater core in your jeep wrangler include:

  • Your car’s heating system is blowing cold air instead of warm air
  • Your car is producing a sweet smell, which indicates coolant leakage
  • Your car’s windshield is fogging up and not defrosting properly

If you experience any of these issues, it’s important to inspect and repair your heater core immediately.

Steps To Inspect And Repair The Heater Core

Inspecting and repairing your heater core requires some technical knowledge and expertise, so it is advisable to seek help from a professional mechanic.

  • Detach the heater hoses from the heater core: the heater hoses are usually located on the engine side of the firewall. Lay some towels on the floor under the heater hoses to avoid coolant leakage.
  • Remove the heater core cover: the heater core cover is usually located near the passenger’s side floorboard. Remove the screws or clips holding it in place.
  • Check the heater core for damage or blockages: a flashlight or a mirror can be useful to check the heater core for damage or blockages. If you detect any damage or blockages, you’ll need to replace or clean the heater core.
  • Reinstall the heater core cover: once you’ve inspected or repaired the heater core, it’s time to reinstall the heater core cover and heater hoses.

Avoiding Costly Repairs : Tips To Maintain Your 2014 Jeep Wrangler Heater Core

-regularly clean and replace your car’s air filter to prevent dust and debris from getting into the heating system and causing blockages.

-flush and refill your car’s coolant system every two years to prevent clogs and leaks.

-periodically use a radiator cleaner to remove rust and other deposits that can cause blockages.

Following these tips can help prevent damage or blockages in your heater core and save you from expensive repairs in the future.

Step 3 : Checking The Blower Motor

Cost-effective troubleshooting: repairing common 2014 jeep wrangler heater blower motor issues

The blower motor plays a crucial role in your jeep’s heating system. It’s responsible for drawing outside air through the heater core and circulating it inside the vehicle, thus providing warmth during cold weather. If you’re experiencing problems with the heater not working in your 2014 jeep wrangler, checking the blower motor is an essential step in identifying the root cause of the issue.

Importance Of Blower Motor In The Heating System

The blower motor is critical to the jeep wrangler’s heating system operation. It saves the engine’s heat and conserves energy by cycling through the saved heat in the engine and using it to warm the cabin. Without a functioning blower motor, warm air won’t reach the vehicle’s cabin, making it uncomfortable for passengers.

Indications Of Failing Blower Motor

The following signs are indications that your jeep’s blower motor is failing:

  • Weak airflow or no airflow
  • Unusual noise coming from the motor
  • Burning smell around the motor
  • Blower motor won’t turn on at all
  • Blower motor runs continuously only at high speeds

If you notice any of these symptoms, it’s likely that your jeep’s blower motor requires repair or replacement.

Repair Or Replace Options For A Faulty Blower Motor

After identifying that your jeep’s blower motor is the root cause of the heater not working, it’s time to decide either to repair or replace the motor.

  • Repair: a blower motor that’s making noise or has weak airflow can often be repaired rather than replaced. A professional technician can fix the motor by replacing the damaged or worn-out parts.
  • Replacement: if the blower motor is completely worn out, damaged beyond repair, or draws excessive power, it must be replaced. A new blower motor will restore the airflow to the heater, and the cabin will become warm again.

Your jeep’s blower motor plays a vital role in keeping the interior warm during cold weather. It’s necessary to keep it functioning correctly. If you notice any symptoms of a failing blower motor, inspect it and determine whether it requires repair or replacement to resolve the heater not working issue.

Ensure that you work with a professional technician to repair or replace the blower motor, for optimal results.

Step 4 : Examining The Heater Control Valve

Understanding The Significance Of Heater Control Valve In Heating Need Of Your Jeep Wrangler

The heater control valve plays an integral role in the heating system of your jeep wrangler. Essentially, the valve regulates the flow of coolant into the heater core, allowing your vehicle’s heating system to function properly. Without a functioning heater control valve, the system can fail, leaving you without heat on chilly days.

Symptoms Of Malfunctioning Heater Control Valve

If your 2014 jeep wrangler is experiencing issues with its heating system, it could be a sign of a malfunctioning heater control valve.

  • Little to no heat coming from the vents
  • Leaking coolant
  • Heater hoses remaining cool to the touch
  • Overheating engine

If you notice any of these symptoms, it’s essential to inspect your heater control valve.

Steps To Check And Replace The Valve

Checking and replacing the heater control valve isn’t a complicated process, and it can be done with minimal hassle.

  • First, consult your vehicle owner’s manual to locate the heater control valve’s exact location in your jeep wrangler.
  • After locating the valve, examine it for damage or signs of wear and tear. Look for leaks and any dents or cracks that could lead to a faulty valve.
  • If you determine that your jeep wrangler’s heater control valve is damaged, it’s time to replace it. Purchase a new valve online or at your local auto parts store.
  • Disconnect the battery to avoid electrocution and drain the coolant from your vehicle.
  • Once the coolant has drained, remove the heater control valve and replace it with the new one.
  • Reconnect the battery, refill the coolant system, and test your heating system to ensure it’s working correctly.

Replacing Your 2014 Jeep Wrangler Heater Control Valve

If you’re replacing a heater control valve in your 2014 jeep wrangler, there are a few things you should keep in mind.

  • Always consult your vehicle owner’s manual before attempting any repairs.
  • Purchase high-quality replacement parts to ensure your vehicle runs correctly.
  • Be cautious when working with the coolant system, as it can cause injury if not handled correctly.
  • If you’re uncertain about your ability to perform the repairs, it’s best to consult a mechanic.

Understanding the significance of the heater control valve, recognizing the symptoms of a malfunctioning valve, and following proper procedures can ensure your 2014 jeep wrangler’s heating system works correctly.

Step 5 : Inspecting The Coolant System

Importance Of Checking Your 2014 Jeep Wrangler’S Coolant System To Ensure A Functional Heater

As a jeep owner, you understand the importance of a fully functional heating system during harsh winters. A faulty heater can put a dent in your driving experience, making your rides a cold and uncomfortable ordeal. One of the primary reasons for a jeep wrangler’s heater to stop working is a malfunctioning coolant system.

Therefore, it is crucial to inspect and maintain your coolant system to ensure a practical heating system. In this section, we will discuss the significant connection between the coolant and heating systems and a few essential steps to check and flush the coolant system.

Connection Between Coolant System And Heating System

The engine’s coolant system and the heating system in a 2014 jeep wrangler are intimately connected. The heater core, which acts as a small radiator, is responsible for heating the air inside the car. This core is connected to the engine’s cooling system to draw in hot coolant and warm up the air that passes over it.

Hence, a problem in the coolant system can cause your jeep’s heating system to malfunction.

Signs Of A Low Or Contaminated Coolant System

To ensure that your coolant system is in good working order, you should regularly check for signs of a low or contaminated coolant system.

  • Low coolant level in the reservoir
  • A sweet smell in the exhaust
  • Leaks or cracks in the radiator or hoses
  • Rust or sediments in the coolant

Keep a lookout for these signs and perform a thorough inspection of the coolant system if you detect any of them.

Steps To Check And Flush The Coolant System

Checking and flushing a coolant system is relatively simple and can save you from many headaches in the future.

  • Turn off your engine and let it cool
  • Locate the coolant reservoir in your engine bay and check the coolant level
  • Check the radiator, hoses, and thermostat for leaks and cracks
  • If you detect any issues, repair or replace the damaged components
  • Flush the coolant system to get rid of any rust or contaminants
  • Refill the coolant system with fresh coolant and water in the appropriate ratio

Following these essential steps should help you maintain an optimal coolant system that works hand-in-hand with your jeep’s heater core to keep you warm and cozy during those frigid winter months.

Keeping your coolant system in good working order is crucial to ensure a fully functional heating system in your 2014 jeep wrangler. Regularly check for signs of a malfunctioning coolant system, and follow the steps mentioned above to maintain a well-functioning coolant system.

Doing so will make your winter jeep rides warmer and more comfortable.


A malfunctioning heater in a 2014 jeep wrangler can lead to a discomforting experience while driving. The reasons for such an issue could be multiple, ranging from faulty thermostats to clogged air filters, as discussed in the article. The importance of regularly servicing and inspecting the jeep’s heating system cannot be understated in order to avoid such problems in the future.

By following the troubleshooting tips described in the article, one can potentially identify and resolve the issue with their jeep’s heater, saving them a lot of money and frustration. It is highly recommended that one seeks professional assistance if the issue persists or if any further complications arise.

Thus, by being proactive and taking a few preventative measures, jeep owners can ensure that their heater works properly and provides them with a comfortable driving experience in the winter months.

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