Disabling the 2019 Jeep Grand Cherokee auto start stop requires either a dash button press or aftermarket module installation. Many drivers find the engine shut-off at traffic lights annoying, and you have a few reliable ways to stop it for good. This guide walks through every method, from the simple factory override to permanent electronic solutions.
The auto start-stop system in your Grand Cherokee is designed to save fuel, but it can feel jarring in stop-and-go traffic. You might also worry about extra wear on the starter battery. Whatever your reason, turning it off is straightforward once you know your options.
We will cover the button method, the gear shift trick, and aftermarket modules that remember your setting. You will also learn about potential error codes and how to avoid them. Let’s get your Jeep running the way you want.
Why Disable The 2019 Jeep Grand Cherokee Auto Start Stop System
Before diving into the how, it helps to understand why so many owners want to disable this feature. The system automatically shuts off the engine when you come to a complete stop. It restarts when you release the brake pedal.
For some, this is seamless. For others, it causes a slight delay when pulling into traffic. The restart vibration can also be unsettling, especially in hot weather when the air conditioning compressor stops.
Another common complaint is battery drain. The system relies on a heavy-duty AGM battery, but frequent cycling can still shorten its life. Disabling the system can help preserve battery health over the long term.
Finally, some drivers simply prefer the traditional feel of an engine idling. There is no right or wrong reason. If you want it off, you have options.
2019 Jeep Grand Cherokee Auto Start Stop Disable
This section covers the most direct method: using the factory-installed disable button. Every 2019 Grand Cherokee comes with a physical button located near the gear shifter or on the center console. It is marked with an “A” inside a circle with an arrow.
Using The Dash Button To Temporarily Disable
Pressing this button once will disable the auto start-stop system for the current ignition cycle. The dashboard will show a light indicating the system is off. This is the simplest method, but it resets every time you turn off the engine.
Here is the step-by-step process:
- Start your Jeep normally.
- Locate the auto start-stop button on the center console or dashboard.
- Press the button once. You should see an indicator light turn on or a message on the instrument cluster.
- Drive as usual. The engine will not shut off at stops.
- Remember that the system will reactivate the next time you start the vehicle.
This method works perfectly for short trips or when you just want to disable it for a single drive. It requires no tools and no modifications. However, if you want a permanent solution, you will need to look at other options.
Using The Gear Shift Trick
Some owners have discovered a workaround using the gear selector. By shifting into manual mode or using the paddle shifters, you can sometimes prevent the system from engaging. This is not a guaranteed method on all trims.
Try this if the button is not working or you want an alternative:
- Start the engine.
- Shift the transmission into manual mode (M on the gear selector).
- Use the paddle shifter to select a gear, such as 1 or 2.
- The system may not activate because it detects manual control.
This trick is inconsistent. Some drivers report it works, while others see no change. It also forces you to drive in manual mode, which may not be ideal for everyone. Use it as a backup, not a primary solution.
Permanent Disable Options For The 2019 Jeep Grand Cherokee
If you want the auto start-stop system to stay off permanently, you need a hardware or software modification. The factory button resets every time, so aftermarket solutions are the way to go.
Aftermarket Auto Start Stop Disable Modules
Several companies make plug-and-play modules that remember your last setting. These modules install between the factory button and the vehicle’s wiring. Once installed, the system will remain in the state you choose, even after restarting the engine.
Popular brands include:
- AutoStop Eliminator
- SmartStop Start
- 4D Tech
Installation is usually simple. You unplug the factory harness behind the button, plug the module in between, and tuck the module away. No cutting or soldering is required. The whole process takes about 10 to 20 minutes.
These modules cost between $50 and $100. They are a one-time investment that saves you from pressing the button every time you drive.
Using A Tazer Or Programmer
For owners who want more control, a programmer like the Tazer JL or Superchips Flashcal can disable the system through the vehicle’s computer. These devices plug into the OBD-II port and change the settings directly.
Benefits of using a programmer:
- Permanent disable without extra hardware
- Can also adjust other settings like tire size and lighting
- Reversible if you sell the vehicle
Downsides include higher cost, usually $200 to $400, and the need for basic technical knowledge. You also risk voiding your warranty if the dealer detects changes. Proceed with caution.
Disconnecting The Battery Sensor
A more risky method involves disconnecting the battery current sensor. This sensor tells the system when the battery is charged enough to restart. Some owners unplug it to trick the system into thinking the battery is low.
This is not recommended for several reasons:
- It can cause warning lights on the dashboard
- It may affect charging system performance
- It can lead to battery drain or overcharging
- It is not a clean solution
Stick with the button or a dedicated module for reliable results.
Step By Step Installation Guide For An Aftermarket Module
If you decide to use a disable module, here is a detailed walkthrough. This guide assumes you have a 2019 Jeep Grand Cherokee with the standard console layout.
Tools You Will Need
- Trim removal tool or flathead screwdriver (wrapped in tape)
- Small flashlight
- Your disable module kit
Installation Steps
- Turn off the engine and remove the key fob from the vehicle.
- Locate the auto start-stop button on the center console.
- Use the trim tool to gently pry up the panel around the button. It is usually clipped in.
- Disconnect the factory wiring harness from the back of the button.
- Connect the module’s harness to the button and the vehicle’s harness.
- Tuck the module into the empty space behind the console. Use double-sided tape if needed.
- Reinstall the trim panel and press it into place.
- Start the engine and test the system. Press the button once to set your preference.
- Turn off the engine and restart. The system should remember your setting.
If the system does not remember, check the connections. Some modules have a small switch to set the default state. Refer to the manufacturer’s instructions.
Common Issues And Troubleshooting
Even with a proper installation, you may encounter some problems. Here are the most common issues and how to fix them.
Warning Lights On Dashboard
Some modules can trigger a check engine light or a service start-stop message. This is usually harmless and may clear after a few drive cycles. If the light stays on, check for loose connections.
Using a programmer like Tazer can sometimes avoid these warnings because it changes the computer settings directly.
System Still Activates Occasionally
If the engine still shuts off at stops, the module may not be working correctly. Verify that the module is firmly connected. Also, check if your vehicle has a software update that interferes with the module.
Contact the module manufacturer for support. Most offer a warranty or replacement.
Battery Drain After Installation
A rare issue is increased battery drain. This can happen if the module is faulty or if you have other aftermarket electronics. Test your battery voltage with a multimeter. If it drops below 12.4 volts overnight, the module may be the cause.
Disconnect the module and see if the drain stops. If it does, request a replacement.
Legal And Warranty Considerations
Disabling the auto start-stop system is generally legal for personal use. However, it may affect your vehicle warranty if the dealer can prove the modification caused a problem. Most modules are designed to be undetectable when removed.
If your Jeep is still under factory warranty, consider using a temporary method like the button. Permanent modifications are safer after the warranty expires.
Some states have emissions testing that may check for system tampering. The auto start-stop system is not part of standard emissions tests, but it is worth knowing your local laws.
Frequently Asked Questions
Can I Permanently Disable The Auto Start Stop On My 2019 Jeep Grand Cherokee Without A Module?
No, the factory button only disables it for one drive. Without a module or programmer, the system will reset every time you start the engine.
Will Disabling The System Hurt My Fuel Economy?
Yes, slightly. The system is designed to save fuel by preventing idling. You may see a small decrease in MPG, usually 1-2 miles per gallon in city driving.
Does The Aftermarket Module Void My Warranty?
It can if the dealer proves the module caused a problem. Most modules are plug-and-play and leave no trace when removed. Remove it before taking the vehicle in for service.
How Do I Know If My 2019 Grand Cherokee Has The Auto Start Stop System?
Look for the button with the “A” icon on the center console. Also check your owner’s manual. All 2019 Grand Cherokees with the 3.6L V6 or 5.7L V8 have this system.
Can I Use The Gear Shift Trick To Disable The System Permanently?
No, the gear shift trick only works temporarily and is not reliable. It is not a permanent solution.
Final Thoughts On Disabling The System
The 2019 Jeep Grand Cherokee auto start stop disable is a common request among owners. Whether you use the button for a single trip or install a module for permanent control, the choice is yours. The button method is free and easy, while modules offer convenience.
If you are handy with tools, the module installation is a 20-minute job. If you prefer no modifications, just press the button each time you drive. Both methods work, and neither is wrong.
Remember to check your warranty before making permanent changes. And always test the system after installation to ensure everything works as expected. Your Jeep should drive the way you want it to, without unnecessary interruptions.
We hope this guide helps you take control of your driving experience. If you have questions, leave a comment below. We are happy to help you get the most out of your Grand Cherokee.