Jeep Grand Cherokee All Warning Lights On -Troubleshooting

Jeep Grand Cherokee is an amazing vehicle to own. But as long as it’s a machine, it can have problems anytime. And lighting up the warning lights will be the first thing that you will notice.

So, what about Jeep Grand Cherokee all warning lights on?

A very common reason behind the Jeep Grand Cherokee all warning lights turning on is the failure of multiple systems of the vehicle. Also, a faulty alternator can also cause this issue. Lastly, bad wiring, burnt wire, and a low battery can be the reason why all of your warning lights are on. 

Need to know more? Don’t worry! We have a whole guide for you to handle this issue with ease. So let’s get into it right away.


  • There are mainly three prevalent issues regarding all warning lights: electrical malfunction, multi-system failure, or alternator issue.
  • Even with all the warning lights on, you can drive your car if you’re being careful. However, it’s advised not to drive until the issues are solved.
  • Monitor your battery water level, and oil pressure regularly to avoid warning lights issues.

Jeep Grand Cherokee All Warning Lights On: Justifying the Issue! 

All warning lights on are a sign that shows a problem in your car’s system. Each warning light carries different reasons for it to light up. But when all warning lights are lit together it calls for a bigger problem.

Jeep Grand Cherokee All Warning Lights On
Source: MotorTrend

Dashboard warning lights are symbols that illuminate to indicate when anything is wrong with the car. They are intended to glow to indicate trouble with a specific system. But this can also indicate a fault with the warning lights themselves.

Each sign has its own meaning. When a dash light illuminates, it’s critical to get it looked out. So you can fix the issue to guarantee the safety of the vehicle.

Also remember that when the engine initially starts, various lights should light up. It’s totally normal. But they should fade off after a few seconds.

Quick Troubleshoot of the Problems

When all warning lights are lit up it’s a hard task to figure out the problem. Because it might simply indicate that you have difficulties with more than one system.

So it’s absolutely crucial to find out the issue and resolve it prior to driving. Or else it can be very dangerous, especially for long drives. Even if important systems are not working properly, such as the engine.

Electrical problemCheck all the electrical connections, batteries, alternator, loose wires, etc, and fix them
An issue with the alternatorRepair or replace the alternator
Failure in multiple systemsCheck each system of the car individually and fix them.

These are the main reasons behind the 2012 jeep grand Cherokee all warning lights on. Now, let’s head onto the problems themselves and see their solutions in detail.

Reason 1: Electrical Problems

Electrical problems are a very common problem with vast possibilities of leading to other problems. So let’s go through the symptoms and ways of identifying the problem. 


As we said, all warning lights are a potential symptom of electrical problems. But there are other symptoms as well that you can look for. Such as the engine not cranking properly, headlights, and other indicator lights not working properly.

Electrical Problems of jeep grand cherokee
Source: JP Magazine

It can also create a buzzing sound even when the vehicle is turned off. Also, the smell of burnt plastic or wire can also indicate electrical problems.


The solution to this problem is quite simple. First, check all the electrical connections in your jeep. Many times loose wires cause a lot of trouble in the electrical circulation. Check to see if the alternator is operating correctly.

We will go into more depth about alternators in the next part. Also, check for your battery’s health and proper output. If you’re still uncertain about the situation, contact a professional.

Reason 2: Faulty Alternator

Alternator problems are somewhat related to electrical problems. Electrical problems can cause the alternator to go bad.

Faulty Alternator
Source: Auto Care

A malfunctioning alternator, on the other hand, might produce electrical difficulties. It can cause 2022 jeep grand Cherokee all warning lights on very often. So let’s go into the details.


The headlight test and battery test are two of the simplest ways to check the alternator. The headlight test is quick and simple. Do the test outside to assure that there is no carbon monoxide buildup in the garage.

Start your automobile and switch on your headlights to do the headlight test. Another person examines the headlights and hits the accelerator while the car is in parking mode.

If headlights flicker, fade, or get brighter while pressing the accelerator, your alternator may be faulty. If the illumination of your headlights does not change, your alternator is most likely fine.

A battery test can be conducted at home very easily. First, open the hood and turn on the engine. It’s quite similar to RAV4’s battery removal steps. Remove the negative cable from the battery. Remember to keep the engine running.

2022 jeep grand Cherokee all warning lights on
Source: AutoZone

If your car stops, the alternator may be faulty. This is due to the alternator not producing enough power to keep the engine running. If the vehicle continues to run, the problem could be related to the battery.


To solve this problem, there are two solutions. You can repair the alternator or you can replace the alternator. It’s best to replace the alternator since repairing an alternator can be a hassle.

One great thing about alternators is that they don’t cost that much. For example, a replacement alternator for a jeep Cherokee 2000-04 will cost you less than $150. 

Even something like New Alternator Replacement For Jeep Grand Cherokee will cost you in the hundred dollars range.

Also replacing an alternator is quite simple which anyone with fair automobile knowledge can do.

Reason 3: Failure in Multiple Systems

This is the most prevalent problem that leads to the 2018 jeep grand Cherokee all warning lights on. When multiple systems are faulty. As we have already mentioned, multiple system failures can be hard to detect and solve. 

But don’t worry! We have explained each warning light and the reasoning behind their lighting up. 


Multiple system failure often leads to all warning lights getting turned on. That’s the only way you can identify that there are problems in multiple systems.


To solve this problem, first, you need to check each system and its possible reasons for failure. Below we have gone through each warning light indicator and explained why they turn on. So go through that segment and you should be okay.

What Does Each Type of Warning Light Mean?

Now that we’ve addressed the most important factors. Let’s go through the reasons behind each light being turned on. Since multiple failures in the system can be responsible, it’s important to know each of their functionality.

Battery Charge Warning Light:

The Battery Charge Warning Light is easily visible. Because it is red and depicts a regular automotive battery.

Jeep Battery Charge Warning Light
Source: Your Mechanic

Its function is to notify you if there is an issue with the power system. As well as the charging system or the battery itself. When this light illuminates, be sure to check each system, especially the battery.

A worn-out battery often causes the warning light to lit up. Also, loose wiring or bad connectors can be a reason too.

Oil Pressure Warning Light:

This one has the appearance of an oil can with a drop flowing out. In the 2015 jeep grand Cherokee all warning lights on, it will be followed by a chime. When this happens, pull aside and turn off the engine as quickly as possible.

Jeep Oil Pressure Warning Light
Source: CarTreatments

It can be very dangerous to keep driving in a state like that. Because it means that the engine is running at low oil pressure. There might be other oil pressure problems as well in your Jeep Cherokee. It can quickly damage your engine and lead to overheating if kept running.

So immediately stop and check the oil pressure. If you have spare oil then use it or contact a trained technician as well.

Tire Pressure Monitoring System Warning Light:

The tire pressure monitoring system warning Light is another crucial light to keep an eye on. Because having the appropriate amount of air in your tires is crucial for both safety and performance.

It’s critical that you pull over and make the necessary changes soon away. Even though you should be able to drive safely for a few more miles. It’s better not to. Extremely low tire pressure might result in tire failure.

This can lead to a blowout, which is exceedingly dangerous. The TPMS Warning Light is yellow and depicts an exclamation point and a flat tire.

Electric Power Steering Fault Warning Light:

It’s a red light in the shape of handlebars beside an exclamation mark. It depicts an electric power steering (EPS) Fault Warning trying to grab your attention.

Jeep Electric Power Steering Fault Warning Light
Source: Monticello Auto Service

This light shows that the EPS system is not working properly. Seek help as soon as you detect it. Continuing to drive your vehicle in this state can be extremely dangerous. Your steering wheel can stop working and it can cause life-threatening accidents.

Engine Check/Malfunction Indicator Warning Light:

The yellow Engine Check/Malfunction Indicator Warning Light (MIL) resembles an engine. It keeps track of the engine and automatic transmission control systems. This is another that requires prompt care.

Because engines also can overheat to many different system failures. And overheating of the engine can be very dangerous. So take care of the problem as soon as possible. The MIL will also notify you if the gas cap is loose or missing.

Can I Drive My Car With All the Warning Lights on?

Yes, you can drive your car with all the warning lights on. But it’s not recommended at all. Since it’s hard to determine which system is at fault, it can be extremely dangerous.

It can also be something very small. But until you have figured out the problem you shouldn’t drive.

Before getting into the next segment, a relevant article for you – Radio issue in Jeep Grand Cherokee. Because you may face this issue in the near future!

Why Is It Important to Take Action Right Now?

When all the warning lights are on you are not sure which system is faulty. That’s why it’s very important to take action right away to prevent further damage.

For instance, if your engine oil pressure is low and you keep driving. It can severely damage your engine and even worse, it can lead to life-threatening accidents.

Even problems regarding brakes, transmission, etc can lead to extreme safety hazards. So it’s very important to take action immediately.

Safety Precautions

A good rule is to check all systems of your jeep before going out with it. Check each system and its potential problems before starting off with your vehicle. This way it’s easier to prevent sudden dysfunction while being on the move.

Also, keeping everything in check will prevent damage from not solving an underlying problem. As we have said, ignoring malfunctions in many systems can cause severe damage to your vehicle. So taking precautions also helps increase your vehicle’s longevity.

Frequently Asked Questions (FAQs)

Do Accidents Lead to All Warning Lights to Turn On?

Yes, accidents can lead to all warning lights turning on. It’s almost always seen in real-life scenarios. Because accidents affect numerous systems most of the time. If the airbags were deployed during the collision, they must be reset. Likewise, the other systems may also need resetting.

How Do I Reset My Jeep Grand Cherokee?

To reset your Jeep Grand Cherokee start by turning your ignition to the “ON” position without starting your car. In your Jeep Grand Cherokee, look for the “STEP” button. Press the “STEP” button until you reach a screen that displays the number of kilometers remaining. Hold down the “RESET” button. That should reset your Jeep Cherokee.

How Do I Clear All Warning Lights?

To clear all warning lights one simple thing you can try is turning off your jeep and restarting it. Then unplug your battery, wait a few minutes, and then reconnect it. But if the warning lights are caused by system failure then they need to be fixed. If the warning lights stay, don’t ignore them and get your systems checked.


That will be all about jeep grand Cherokee all warning lights on.  Hopefully, now you know why this issue occurs and how to handle it.

Always remember to handle vehicle problems with caution to be safe while driving.

Good luck!

Robert Lozano

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