Tired of your Genesis engine shutting off at every stoplight? That auto start-stop feature might save a tiny bit of fuel, but it can be jarring, slow to restart, and downright annoying in stop-and-go traffic. The good news? You’ve got options to disable it—from free DIY hacks to plug-and-play devices that remember your preferences. I’ll walk you through the most effective methods so you can enjoy a smoother, more consistent driving experience.
Why Genesis Owners Hate Auto Start-Stop
The auto start-stop feature (officially called ISG or Idle Stop & Go) automatically shuts off your engine when you come to a complete stop and restarts it when you release the brake. While well-intentioned for fuel savings, it comes with drawbacks:
- That noticeable shudder when the engine restarts
- Split-second delay when you need to accelerate quickly
- Increased wear on your starter and battery
- Temporary loss of AC performance in hot weather
Let’s fix that.
Method 1: Using the Factory ISG OFF Button
Every Genesis model (G70, G80, GV70, GV80, G90) comes with a built-in solution—the ISG OFF button typically located to the left of the steering column.
How to use it:
- Look for a button with “ISG OFF” or an “A” with a circular arrow
- Press it once—you’ll see an indicator light on the button
- That’s it! Auto start-stop is disabled… for now
The catch: Genesis designed this as a temporary solution. Every time you restart your vehicle, the system defaults back to active. For many owners, having to press this button at every startup becomes its own annoyance.
Method 2: The Physical Wedge Hack (Free DIY Solution)
This clever hack is the favorite among budget-conscious Genesis owners who want a more permanent solution without spending money.
What you’ll need:
- A plastic bread-bag clip OR
- A folded business card OR
- A thin piece of plastic from packaging
Steps:
- Locate your ISG OFF button
- Press the button down
- While it’s pressed, carefully wedge your clip/card under the edge
- Adjust until the button stays depressed without popping back up
The beauty of this method is that it’s completely reversible and costs nothing. Many Genesis owners report it works perfectly without damaging the switch or dash.
| Wedge Material | Pros | Cons |
|---|---|---|
| Bread clip | Small, rigid, perfect size | Can be lost easily |
| Folded card | Easy to find, adjustable thickness | May look obvious |
| Gift card backing | Thin, clean-looking | Requires cutting to size |
Method 3: Plug-and-Play Memory Modules
For those wanting a truly elegant solution, aftermarket memory modules intercept the auto start-stop signal and remember your preferences across startups.
The most popular option is the Autostop Eliminator, which has specific versions for Genesis vehicles. It’s essentially a small electronic device that plugs into your vehicle’s OBD-II port or connects directly to the ISG button wiring.
Installation process:
- Locate your OBD-II port (usually under the dashboard near the driver’s knees)
- Plug in the device (no tools required)
- Follow the included instructions to program your preferences
- Enjoy never thinking about auto start-stop again
Many Genesis owners confirm this works flawlessly and is worth the $50-100 investment for the convenience.
Another option is the 4D Tech module specifically designed for Genesis models, offering similar functionality at a comparable price point.
Method 4: Hardwired Memory/Dip-Switch Modules
For the more technically inclined, hardwired solutions offer maximum reliability and customization.
Products like the SharkRacing ISG & Auto Hold Memory Module connect directly to your vehicle’s wiring harness, creating a permanent override for the auto start-stop function.
What to expect:
- Requires basic wiring knowledge
- Installation takes 30-60 minutes
- Usually includes dip switches for custom settings
- Typically costs $30+ depending on features
This method is particularly popular with Genesis enthusiasts who want a professional-grade solution that won’t be affected by software updates or dealer service visits.
Comparing All Methods: Which is Best for You?
| Method | Cost | Difficulty | Permanence | Reversibility |
|---|---|---|---|---|
| Factory Button | $0 | Extremely Easy | Temporary (1 drive) | Built-in |
| Wedge Hack | $0 | Easy | Until removed | Completely reversible |
| Plug-and-Play Module | $50-100 | Moderate | Permanent until unplugged | Fully reversible |
| Hardwired Module | $30+ | Moderate-Difficult | Permanent | Reversible with effort |
Things to Consider Before Disabling Auto Start-Stop
Before making modifications, keep these points in mind:
- Warranty concerns: Physical wedges and plug-and-play devices are unlikely to cause warranty issues as they’re easily removable before service visits. Hardwired solutions carry slightly more risk.
- Fuel economy impact: Disabling auto start-stop will slightly increase fuel consumption, though many owners report the difference is minimal in real-world driving.
- Environmental considerations: Auto start-stop was implemented to reduce emissions, particularly in urban environments with frequent stops.
Installation Tips for the Most Popular Methods
For the Wedge Hack:
- Use black or dark-colored materials to make the wedge less noticeable
- Trim excess material for a cleaner look
- Consider using foam tape if plastic clips are too rigid
For Plug-and-Play Modules:
- Follow manufacturer instructions carefully
- Some modules require a specific sequence of actions to program
- Consider routing and securing any visible wires for a cleaner installation
For Hardwired Solutions:
- Disconnect the battery before installation
- Use a multimeter to verify connections
- Consider having a professional install if you’re uncertain about wiring
Genesis Model-Specific Considerations
Different Genesis models may have slight variations in the location and behavior of auto start-stop systems:
- G70: The ISG button is typically to the left of the steering wheel. Owners report the wedge hack works well.
- G80/G90: These models may have the button in a slightly different position. The Autostop Eliminator works particularly well with these models.
- GV70/GV80: SUV owners report great success with both the wedge hack and aftermarket modules.
Real User Experiences
“I tried the business card trick on my GV80 and haven’t looked back. Such a simple fix for an annoying feature.” – GV Forums user
“The Autostop Eliminator was worth every penny. Plug and play, and I never have to think about that annoying start-stop again.” – Genesis Owner
“I’ve been using a simple bread clip for six months now. Costs nothing and works perfectly.” – Reddit user
Creative Alternative Solutions
If the methods above don’t appeal to you, some Genesis owners have found these alternatives:
- Drive Mode Hack: Some owners report that keeping the vehicle in Sport mode reduces the frequency of auto start-stop activation.
- OBD-II Programmers: Universal OBD tools like Carista can sometimes access and modify start-stop settings, though compatibility with Genesis varies.
- Aftermarket Extension Harnesses: Some owners have used cable extension harnesses that create a bypass for the start-stop signal.
Maintaining Your Solution
Once you’ve implemented your preferred method, keep these maintenance tips in mind:
- If using a physical wedge, check occasionally to ensure it hasn’t shifted
- For electronic solutions, remove before dealer service visits if you’re concerned about warranty
- Keep any original parts or connectors if you’ve done more extensive modifications
The simple wedge hack remains the most popular solution among Genesis owners due to its zero cost, easy implementation, and complete reversibility. For those wanting a more elegant solution without any visible modification, the plug-and-play modules offer the best balance of convenience and reliability.
Whichever method you choose, you’ll likely find that driving without the constant engine cycling makes for a much more enjoyable Genesis experience.
