Ever noticed your Jeep Cherokee’s engine shutting off at stoplights? That’s the auto start/stop feature (also called ESS – Engine Start/Stop) doing its thing. While designed to save fuel and reduce emissions, many drivers find it frustrating. The sudden shutdowns and restarts can feel jarring and may cause concerns about long-term vehicle health.
You’re not stuck with this feature forever. There are several proven methods to permanently disable auto start/stop on your Jeep Cherokee without damaging your vehicle or voiding warranties.
What Is Auto Start/Stop and Why Disable It?
The auto start/stop system in Jeep Cherokees automatically turns off your engine when you come to a complete stop (like at traffic lights) and restarts it when you release the brake pedal.
Why might you want to disable it?
- Smoother driving experience – No more unexpected engine shutdowns
- Less wear on starter components – Reduces frequent cycling that can accelerate part degradation
- Quicker acceleration from stops – Eliminates the 0.5-1.5 second lag that occurs when resuming motion
- More consistent engine performance – Prevents erratic behavior from sensor malfunctions
While the ESS button on your dash can turn off this feature, you’ll need to press it every time you start your vehicle. Let’s explore how to disable it permanently.
Method 1: Install an Aftermarket Eliminator Module
The most reliable and warranty-friendly solution is installing an aftermarket eliminator module. These devices “remember” your preference to keep auto start/stop disabled.
Autostop Eliminator (4D Tech)
This popular plug-and-play device intercepts signals between the ESS button and the vehicle’s gateway module.
Installation Steps:
- Remove the trim panel below the steering wheel using a plastic pry tool
- Locate the 8-pin connector for the console electronics
- Disconnect the factory connector
- Plug the eliminator into both ends of the disconnected factory harness
- Secure wiring with zip ties
- Reinstall the trim panel
- Press your ESS button once to disable auto start/stop
Pros:
- No permanent modifications (reversible in about 10 minutes)
- Maintains remote start functionality
- No warning lights or error codes
- Preserves warranty coverage
You can find the 4D Tech Auto Start Stop Eliminator through amazon.
SmartStopStart Module
Similar to the Autostop Eliminator, this module also adds memory to the ESS button functionality.
Key Features:
- Compatible with 2018-2025 Jeep Cherokee models
- Doesn’t interfere with Security Gateway Module or OBD-II port
- Preserves all factory functionality
The SmartStopStart module installation is similar to the Autostop Eliminator but may connect under the driver’s seat depending on your Cherokee’s trim level.
Method 2: Sensor Disconnection Techniques
If you’re comfortable with a more hands-on approach, you can disable auto start/stop by disconnecting certain sensors. These methods cost nothing but may trigger warning lights.
Intelligent Battery Sensor (IBS) Disconnection
The IBS, located on the negative battery terminal, helps manage the auto start/stop system by monitoring battery conditions.
Procedure:
- Open your hood and locate the IBS on the battery’s negative terminal
- Unplug the sensor’s connector
- Secure the disconnected harness to prevent damage
Important Note: This method may trigger a “Service ESS” warning light and could potentially affect battery charging management. Some Reddit users report premature battery degradation with this method.
Hood Ajar Switch Disconnection
The auto start/stop system won’t activate if it detects an open hood. You can exploit this safety feature.
Steps:
- Locate the hood switch near the latch assembly (driver’s side fender)
- Unplug the wiring harness or remove the sensor entirely
Drawbacks:
- Triggers a persistent “Hood Open” warning on your instrument cluster
- Disables remote start functionality
This approach is documented in various YouTube tutorials and is completely reversible.
Method 3: Software Solutions for Tech-Savvy Owners
If you’re technically inclined, software modifications provide another path to disable auto start/stop.
ECU Reprogramming Tools
Aftermarket tuners like those from Superchips allow reprogramming your vehicle’s computer to disable auto start/stop permanently.
Important Considerations:
- Often voids powertrain warranties
- Requires technical knowledge
- Higher cost ($400-600 for equipment)
- Not easily reversible
While effective, this approach is best suited for those already planning other performance modifications or who are comfortable with vehicle electronics.
Comparing Your Options: Which Method Is Best?
| Method | Cost | Reversibility | Warranty Impact | Dashboard Warnings |
|---|---|---|---|---|
| Autostop Eliminator | $90-100 | Yes | None | None |
| SmartStopStart Module | $130 | Yes | None | None |
| IBS Disconnection | $0 | Yes | Possible | “Service ESS” |
| Hood Sensor Disconnection | $0 | Yes | Possible | “Hood Open” |
| ECU Tuning | $400-600 | No | Likely | None |
For most Jeep Cherokee owners, the Autostop Eliminator or SmartStopStart Module provides the ideal balance of reliability, warranty preservation, and clean implementation. These solutions require no permanent modifications and maintain factory functionality.
Important Technical Considerations
Battery Health Impacts
Jeep Cherokees with auto start/stop use special absorbed glass mat (AGM) batteries designed for frequent cycling. When disabling the system, remember:
- The alternator’s output remains optimized for frequent restarts
- Disabling without recalibrating the charging system may affect battery life
- Monitor battery performance after making modifications
Legal and Environmental Factors
While aftermarket eliminator modules that preserve the ESS button’s functionality typically comply with regulations, more invasive modifications might raise concerns in states with strict emissions testing. The National Highway Traffic Safety Administration provides guidelines on vehicle modifications that maintain safety and compliance.
Tips for Living with Auto Start/Stop (If You Keep It)
If you’re not ready to disable the system permanently:
- Use Sport Mode: In many Jeep models, this automatically disables auto start/stop
- Light Brake Pressure: Apply just enough pressure to stop without triggering the system
- Climate Control Trick: Setting your climate system to its highest or lowest settings often prevents auto stop
- Tow/Haul Mode: Engaging this will disable auto start/stop during trailer towing
Making the Right Choice for Your Jeep
The best method for disabling auto start/stop on your Jeep Cherokee depends on your technical comfort level, budget, and whether maintaining warranty coverage is important to you.
Most owners find that aftermarket modules like the Autostop Eliminator provide the perfect balance – they’re easy to install, completely reversible, and don’t affect your vehicle’s warranty or functionality.
Remember that whichever method you choose, you’re customizing your Jeep Cherokee to better match your driving preferences, which is what Jeep ownership is all about.
