Jeep Grand Cherokee Climate Control Problems [SOLVED]

Jeep Grand Cherokee is known for providing a luxurious drive. Still, it becomes uncomfortable when the Air Conditioning system breaks down, especially on summer days when heat from the scorching sun becomes unbearable.

Some reasons for Jeep Grand Cherokee, climate control problems might be a low refrigerant, dirty blower, clogged air filter, fused relay, etc. 

In this blog post, I will share all the issues related to the Jeep Cherokee climate control system. I will also suggest some quick DIY fixes and the steps to reset the Air Conditioning system.

Without much ado, let’s jump into the business right away.

Also Read: Jeep Cherokee Service Shifter Light On: What Does It Mean?

Common issues with Jeep Cherokee climate control 

Common issues with Jeep Cherokee Climate Control include clogged air filter, low refrigerant, dirty blower motor, and faulty compressor. DIY fixes involve cleaning the air filter, recharging the refrigerant, cleaning the blower motor, and replacing blown fuses.

Jeep Grand Cherokee Climate Control Problems

Reasons behind a faulty air-conditioning system include:

1: Clogged air filter

The air filter is responsible for providing cool air from the AC. It usually gets dirty after 15,000 miles and needs a replacement. However, you can improve its lifetime by regularly washing it depending on the areas you drive the most.

2: Low refrigerant

Low refrigerant is the top cause of air-conditioning systems not blowing cool air. Generally, if the AC is switched off for a few months. In that case, the refrigerant starts vaporizing, which causes the climate control system to work inefficiently.

Furthermore, refrigerant leakage might be another cause of the low refrigerant level.

3: Excess quantity of oil

In case of any unknown leakage, an excessive quantity of oil is put in to maintain the level. Unfortunately, it collects in the pan, reducing the overall efficiency of the Air Conditioning system.

4.Dirty blower motor

Blower motor is responsible for decluttering the accumulated dust on the evaporator’s fins or condenser’s mesh. If the blower motor stops working, dirt is collected on the fins blocking the airflow from the air-conditioning system.

5. Compressor issues

Compressor plays a vital role in the functioning of AC. All the heat extracted from the cabin loses heat in the condenser by liquifying the refrigerant. In any case, if the condenser stops working, the entire climate control system suffers.

7. Dirty condenser

Condenser contains a micro-level mesh responsible for supplying healthy air to the passengers. With time dirt and bugs build on the mesh leading to a bad air supply quality.

8. Choked orifice tube

An orifice tube or expansion valve is integral in reducing the pressure of the refrigerant. If it clogs up, the Air Conditioning system faces severe climate control issues.

9. Faulty blend door actuator

Any issue with the blend door actuator might also lead the climate control system to blow hot air. However, the heater will  work fine.

If you experience any clicking noise from the Air Conditioning system, that might be a symptom of a bad blend door actuator.

10. Dirty evaporator

Most of the dirt and bacteria are collected on the air filter. Still, some pave their way toward the evaporator, clogging it. This blocked air filter refuses to supply ambient air from the AC, so the Jeep Grand Cherokee faces climate control problems.

11. Blown AC fuse

A blown fuse might be one problem for your Air Conditioning system not blowing cold air.

There are quite a few fuses or relays associated with the Air Conditioning system. If any of them goes bad, the climate control system might suffer.

Also Read: Jeep Touchscreen Not Working? – Here’s How To Fit It

DIY fix of Jeep Grand Cherokee climate control problems

With these quick DIY fixes, you will be able to improve the climatic control of your Jeep Grand Cherokee.

1. Fix for AC refrigerant leak.

First, you need to detect where the hose pipe is damaged; for that, you can take any colored water and inject it into the AC system. Now with the help of UV light, you can detect the leaking area.

2. Recharging AC refrigerant

The Air Conditioning system of the Grand Cherokee has two ports; one is labeled as H and the other as L. Using a recharge kit, you can recharge your AC through the L port.

3. Cleaning the air filter

With the help of a vacuum or a blower, you can wipe all the dirt particles collected on the filter. This will help you clear all the visible dirt. If this process doesn’t help in improving climate control, then consider replacing the filter.

4. Fixing the clogged orifice tube

Take a high-pressure hose and flush water from the Air Conditioning system in case of a clogged orifice tube. This will also clear the clogged evaporator and condenser too.

5. Cleaning the blower motor

Fixing a dirty blower motor is a simple task. Inspect under the dashboard of the passenger area and locate a cage that is your blower motor. If there are lots of dust particles accumulated on the fins, consider clearing the cage with the help of a small-headed brush.

6. Replacing the blown fuse or relay

Locate the blown fuse and replace it with a new one. You can take help locating the bad fuse with the help of your Jeep Grand Cherokee’s user manual.

Besides all these issues, if your Air Conditioning system is going through problems like a fault evaporator, condenser, or blower motor, seek a professional mechanic’s help, as these projects require deep technical knowledge.

How to replace the climate control system in the Jeep Grand Cherokee?

Sometimes the climate control panel hangs up and refuses to restart at any cost. In this case, try replacing the whole panel, for which you will need a plastic screwdriver.

Step #1: Insert the screwdriver into the climate control FRP parts and detach it. Use your hands to pull the panel, and be careful during this process.

Step # 2: There will be two connectors behind the panel. Detach them by using pins. 

Step # 3: Now unscrew the four bolts to bring the control panel outside.

Step # 4: Carefully place the new climate control unit and reverse the process of putting everything in place.

Jeep Grand Cherokee climate control reset

If your climate control system cannot follow your commands, consider resetting it using the following method.

Push the browse and volume knobs simultaneously, and hold these two knobs with the help of your finger for about 30 seconds. You will see the screen turning black. Now restart the system by holding these two knobs for 30 seconds again. Hopefully, this easy fix works for you.


1. Why is my Jeep AC not blowing cold air?

There could be multiple reasons your Jeep Grand Cherokee AC stops working, like low-level refrigerant, faulty compressor or evaporator, dirty cabin filter, or a blown fuse.

You can detect these issues using an OBDII scanner.

Also Read: Most Common Jeep Grand Cherokee Transfer Case Problems

2. How do you diagnose AC problems?

Looking for symptoms of a faulty air-conditioning system, observe for unusual squeaky noises. Moreover, you can also check the functioning of the evaporator, condenser, or blower motor. At the same time, a bad smoky smell can also be a symptom of a fused relay.

If any issues arise, go to your mechanic or follow the DIY fixes mentioned in this blog post.

3. 2020 Jeep Grand Cherokee climate control problems

Air Conditioning system issues are, luckily, the ones for which you don’t need to get panicked. 

However, the 2020 Jeep Grand Cherokee is the year in which several units were reported with climate control problems like a blown fuse, refrigerant leak, and AC components not working. 

If you face problems like these, consult your professional mechanic or follow the easy-peasy DIY fixes mentioned in this blog.

Wrap up:

If you own a Jeep Grand Cherokee, you might experience climate control system problems. The most common ones are Jeep AC not blowing cold air, Jeep AC blowing hot air, squeaking noise from the AC, or smoky smell coming out of the AC.

Generally, these issues are not life-threatening, so don’t worry; ask your mechanic to fix them for you.

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