Golf cart Curtis controller LED won’t stop blinking. What should I do?

My Curtis controller LED light keeps blinking like a disco ball, and I really don’t know why. Has anyone seen this issue before?


I found that the throttle signal was the culprit and just needed adjusting.

Solutions that worked for users

SolutionUsers Who Found SuccessPersonal ExperienceEstimated Cost (USD)Time Needed (Minutes)
Check the Throttle Signal1Checked throttle and it worked$05-10
Check the Controller1Replaced the controller and it worked$100-$30030-60


  • LED light on the controller blinking like a Christmas tree
  • Golf cart either refuses to move or loses power sporadically
  • Controller displaying cryptic error codes

Possible Causes

  • Throttle signal gone haywire
  • Controller on the fritz
  • Wiring resembling a bird’s nest
  • Solenoid acting like a diva

Solutions that Worked

1. Check the Throttle Signal

What I Did:

I used a multimeter to check the throttle signal, making sure the voltage was within the specified range.


The LED light finally stopped its dance routine, and the cart was back in action.

Personal Experience:

I realized the throttle signal was off-kilter. A quick adjustment and voila, problem solved!

Estimated Cost:


Time Needed:

5-10 minutes


  1. Safety First: Always disconnect the battery before you start. Safety goggles wouldn’t hurt either.
  2. Locate the Throttle Potentiometer: This is usually near the pedal assembly.
  3. Set Up Your Multimeter: Make sure it’s set to measure DC voltage.
  4. Test the Voltage: Connect the multimeter to the throttle potentiometer and press the pedal. The voltage should change smoothly.
  5. Adjust if Necessary: If the voltage is erratic, adjust the potentiometer.

Expert Tip:

If your multimeter readings are inconsistent, it’s a sign that your throttle potentiometer is faulty and may need replacement. Also, a can of electrical contact cleaner can work wonders here.

2. Check the Controller

What I Did:

I bit the bullet and replaced the old, faulty controller with a shiny new one.


The LED light ceased its blinking madness, and my cart was as good as new.

Personal Experience:

It was a bit of an investment, but totally worth it. My cart runs like a dream now.

Estimated Cost:


Time Needed:

30-60 minutes


  1. Disconnect the Battery: You don’t want any electrical surprises.
  2. Identify the Old Controller: It’s usually a metal box located under the seat or the cart’s rear.
  3. Take Pictures: Before removing any wires, take pictures for reference.
  4. Remove the Old Controller: Unscrew and carefully disconnect the wires.
  5. Install the New Controller: Follow the installation guide that comes with the new controller.
  6. Reconnect the Wires: Use the pictures you took earlier as a guide.
  7. Reconnect the Battery: Make sure to connect the positive terminal first, followed by the negative.
  8. Test Drive: Take your cart for a spin to make sure everything is working as it should.

Expert Tip:

Always double-check the compatibility of the new controller with your golf cart model. Also, keep the old controller until you’re sure the new one is working perfectly. It’s good to have a backup for parts.

Golf Cart Models Where This Worked

  • 2010 Fairplay
  • 2017 EZGO TXT 48v

Extra Tips

  • Keep a Multimeter in Your Cart: You never know when you’ll need it for quick diagnostics.
  • Label the Wires: When replacing the controller, labeling the wires can save you a lot of time and confusion later.
  • Controller Firmware: Sometimes, the issue might be with the controller’s firmware. Check the manufacturer’s website for updates.
  • Check for Recalls: Some golf cart models may have recalls for faulty controllers. It’s worth checking to see if you qualify for a free replacement.


Ernie loves documenting interesting facts about golf.

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