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Jeep Grand Cherokee Climate Control Problems & How To Fix Them

Have you figured out what’s causing your Jeep Grand Cherokee’s climate control problems? Nothing is worse than hot air from the climate controller unit in summer when you are on a trip. The complicated heating system and air conditioner do not affect your driving but create a suffocating or freezing environment in the jeep. The heating system and cool air in the jeep grand cherokee can be managed separately.

Jeep Grand Cherokee Climate Control Problems

However, there are two types of climate change controllers, automatic and manual. Both of these controls have their advantages, such as, in a manual controller, you set the desired temperature. As well as you can change the jeep’s inside the environment according to the circumstances. In the automatic climate control system, you set the standard temperature. The controller monitors the temperature; for example, if the outside temperature is -3 degrees and you set the temperature to 15 degrees, the climate control system will maintain 15 degrees inside.

Jeep Grand Cherokee Climate Control Problems

Different parts of the climate system work together to provide a stable environment. Issues come when a leakage, clogging, or the fan is not working. However, the problems take work to come with the new jeep grand cherokee. They develop over time. The climate change problematic system can ruin your tour if you do not fix it. So, here are some significant problems of jeep grand cherokee climate control. Let’s discuss each of them.

Major Jeep Grand Cherokee Climate Control Problems

Major Jeep Grand Cherokee Climate Control Problems

Low Freon Level

Climate control problems in Jeep grand cherokees are typically caused by low Freon levels. If you do not know about Freon, it is a non-combustible gas used in air conditioning for cooling. The Freon is altered into liquid on the high side and becomes gas on the low side. Circulation of the Freson on high and low side pressure keeps your jeep grand cherokee cool.

Over time, the leak pipes drop the Freon amount in the air conditioning system. The insufficient amount of Freson not only decays the performance of AC. But it also reduces the gas mileage because it forces your climate control system to work harder.

Symptoms Of Low Freon

Warm Air

Low freon level forces the air conditioning system to work harder; as a result, it blows warm air. Warm air is a sign that the freon level is down. The inadequate freon level is unable to circulate. But the air conditioning tries to work, so the cool air cannot come out of the system and regular warm air blows.

Warm Air
Clutch Engagement

When you turn on the air conditioner, there is a clutch engagement. The clutch engagement generates a slight sound of a click. When the freon level is inadequate, the clutch cannot engage, and there is no sound. As soon as the air conditioner is turned on, pay attention to what it says. If there is no sound, the freon level is low.

Visible Leaks

Serious Freon leakages can appear under the hood. These leakages look like a greasy liquid. You can see the leakage on the ground where you park your jeep. The leakage also appears in the cabins. However, these leagues are hard to tackle, so take your vehicle to the automobile repair shop as soon as possible.

Pressure Controller Solenoid Switch

Sometimes a lousy switch of the pressure control solenoid is the reason for the problematic climate controller. This problem also develops over time. To avoid the problem, check the switch from time to time. Clean all the compressors occasionally and keep the switch safe from dust.

Non-functional AC Pressure Switch

The AC pressure switch controls the pressure of the freon and air. It also detects the pressure level and shows you on the screen. If the switch is not functioning, you may face problematic climate control. The lousy switch does not detect the level of freon, and your AC starts blowing warm air.

Radiator Fan

Radiator Fan

The condenser is essential to the air conditioner when it gets hot. Radiator fans cool the condenser. Consider the case of a malfunctioning radiator fan. The fan does not work correctly because the dust covers it over time. Another reason is if the fan is not getting good power from the motor, it stops working, and the vehicle heats up. The vehicle heats up and automatically turns off your climate control system.

Odor Coming From AC System

The climate control system in some Jeep Grand Cherokees emits a terrible odour. A malfunctioning motor is to blame. Or sometimes the fan is not working correctly to cool down the overheated motor. If you smell an odour, it is a sign that you should clean all the machinery and change the climate controller’s essential components.

Cabin Filter Problem

Cabin filters work as ventilation for the climate control unit. Low airflow through the filters will reduce the gas mileage. A dusty cabin filter can stop air ventilation and disable your jeep climate control unit. To eliminate the chances of an inactive cabin filter, change it occasionally and keep it clean.

How To Replace The Climate Control Unit In The Jeep Grand Cherokee?

First, confirm the module’s fundamental problem before removing the climate control unit in the jeep grand cherokee. Because sometimes, the problem is not with the unit but the cooling fan or cabin filter not working correctly. If you have identified the problem in the control unit, follow the simple steps below to replace the unit.

How To Remove Old Climate Unit Of Jeep Grand Cherokee

How To Remove Old Climate Unit Of Jeep Grand Cherokee
Step 1

The unit is covered with a dashboard. In some models, you must remove the bezel to remove the dashboards. Three screws are used to attach them. Using a screwdriver, loosen the bezel screws and remove them. Sometimes the bezel is clipped at the position. So, try to find screws. If there are no screws, clip off the bezel with your hands politely.

Step 2

Start by removing the dashboard cover or anything covering the climate control unit. The purpose of removing the dashboard is to have access to the screws of the unit. Depending on the model, some dashboards are clipped in without screws, so you can remove them with your hands. Remove the dashboard without using a hammer or heavy tool.

Step 3

Now there will be 3 to 4 screws fastening the unit in place. Start loosening all the screws individually and collect them in a safe place. Do not apply extra force on the unit or pull out the unit after removing the screws. Do not pull the unit when you successfully remove the dashboard because it is attached to screws.

Step 4

Now you have the unit in your hands, but it is still attached to the vehicle with electrical connectors. Disconnect all the electrical connectors and vacuum lines. It will take 2 to 3 minutes to release all the vacuum from the vacuum lines. If you feel resistance while disconnecting electrical connectors or the connectors are stuck, use a flathead screwdriver to disconnect them.

Step 5

You have removed the unit, but the climate control unit is connected with a cable in some jeep models. You cannot take off the unit without clipping off the cable. However, there are better options than cutting the cable because you must remove it while installing a new unit. So, start following the location of the cable. Cables may end at passenger side floorboards.

In some models, the cable is screwed, but the old jeeps, such as the 1997 jeep grand cherokee use a clip to connect the cable. It might be difficult, but you can remove the clip with a flat-blade screwdriver. Apply force a little on the clip, and it will be detached. Keep the clip because you might need it when you install a new unit.

How To Install New Climate Unit In Jeep Grand Cherokee

Now you have removed the climate control unit. Make sure you keep the old unit. The old climate controllers possess some parts which can help you if the new one stops functioning. Keep the old unit rather than tossing it. Let’s look at how easy it is to install a new climate controller. Before I break down all steps, ensure the new unit matches your jeep model.

How To Install New Climate Unit In Jeep Grand Cherokee
Step 1

Place the new unit in the slot and hook up the electrical connectors individually. Do not apply extra force. Slightly push the connectors back. Place the LED lights in the slots when you finish the electrical connectors. LED light helps to detect power for the climate control unit.

Step 2

It is time to clip in the cable I removed from the passenger side dashboard. Place the cable in the hook and clip it in. Check the cable by pulling it back once it has clipped in. Tackling the hook with your hands is hard, so you can use a flat-blade screwdriver.

Step 3

After attaching the cable and electrical connectors are connected, tight all the screws with a simple screwdriver. Place the dashboard in the position and tighten all the screws. Now, clip in the bezel, or if it supports screws, tighten all the screws slightly. And you have installed a new climate control unit perfectly.

Jeep grand cherokee climate control units are easy to replace. You only need a screwdriver and the skills to tighten and loosen the bolts. Ensure the screws are not loosening because they can turn off your new unit. Also, check if the cable is placed accurately because it is the only tricky job in the replacement process.

Jeep Grand Cherokee Climate Control Reset

Climate control settings can sometimes be reset to solve the problem. You may have tried to find a reset button but failed after many attempts. But the simplest way to reset the climate controller is by holding the cold and hot buttons together. After holding for some seconds, there will pop up a bar titled engineering menu appears on the screen.

Find the reset factory default in all the available options. Press on the rest factory default, and it will ask your permission to continue the process. Tap on yes if you want to rest, but remember that it will change all the settings and delete your data from the system.

Frequently Asked Questions

Why Is My Climate Control Not Working?

There could be several reasons, such as cabin filter problems, malfunctioning compressor, radiator fan not working correctly, low Freon pressure, and outdated operating system.

How To Fix Jeep Grand Cherokee Climate Control Problems?

It depends on the type of problem. Repair the leaking spots, check the Freon level occasionally, clean the cabin filter and reset all the settings. Hold volume and browse enter together for climate control and frozen issues. The system will reboot and reset all the frozen problems.

Why Is My Heat Not Working In My Jeep Grand Cherokee?

If the heater blower motor is damaged, the climate control cannot blow warm air.

How Do You know If Your Climate Control Is Bad?

Visible Freon leakages, dirty cabin filters, inconsistent air, the slow operating system of climate control, or an old software version.

What Is The Difference Between Air Conditioning And Climate Control?

Both air conditioning and climate control can blow warm and cold air. But the climate control automatically adjusts the inside environment and maintains it. On the other hand, an air conditioner cannot control the inside surroundings with sensors.


The best way to fix all the climate control problems is to update the software, check the Freon level, clean the cabin filter and check the compressor occasionally. The major problem occurs when you do not check the freon level and, regardless of factory reset, the default setting. If you do not want to replace the control unit, take proper care of it. With this tool, you can diagnose problems with the climate control system on a Jeep Grand Cherokee quickly and easily. Also, you can change the climate control unit by following 5 easy steps and reinstall a new unit with 3 simple steps.