E-Z-GO RXV 2025+ User Guide

 

 

E-Z-GO RXV 2025+

User Guide for KRAKEN Programmer

USER VERSION
5 minutes
No tools required
Easy
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Quick Navigation

1

Locate Connector

Your RXV 2025+ cart has a 4-pin square Curtis connector.

Connector Location: The connector is located under the seat, towards the front of the battery near the red positive terminal cover. It has a protective cap covering it to protect from the elements.
4-pin square connector location on RXV 2025+
4-pin square connector - located towards the front of the battery near the red positive terminal cover
Protective Cap: Remove the protective cap from the connector before connecting the KRAKEN. When done programming, replace the cap to keep the connector protected from the elements.
Note on 2025+ Models: Unlike the 2013-2024 RXV models which had both round and square connector options, the RXV 2025+ exclusively uses the square 4-pin connector. Only one cable is needed for this model.
2

Connect Device

Connect your KRAKEN Programmer to the cart's 4-pin square connector using the supplied cable.

Important: Ensure the connector is firmly seated. You should feel it click into place. Do not force the connection.
KRAKEN Programmer connection plug
KRAKEN Programmer connection plug - this end connects to the cable from your case, then the cable plugs into the cart's 4-pin connector
Device Powers On: Once connected, the KRAKEN will power on automatically and begin communicating with the cart's controller. The screen will light up and display connection status.

Cart Power & Position

Required Before Programming: The cart must be powered ON and in the NEUTRAL position for the KRAKEN to communicate with the controller.
Cart key in ON position and gear in NEUTRAL
Key must be in ON position and cart in NEUTRAL
3

Confirm Connection & Pair Device

If the connection is successful, the screen will display:

► Curtis Connected

► Curtis serial # and model #

► Press Pair to Marry

First Time Setup - Pairing Required: The USER VERSION must be paired (married) to your cart's controller on first use. This locks the device to your specific cart.

Pairing Process:

  1. When you see "Press Pair to Marry" on the screen, click the Pair button
  2. The screen will then show "Press Flash to Pair"
  3. Click the Flash button to complete pairing
  4. You'll see a "Pairing Success" message
  5. The screen will display "Ready" - you can now program
KRAKEN screen showing Press Pair to Marry message
Step 1: Initial connection screen showing "Press Pair to Marry" message
Press Flash to Pair screen
Step 2: Press Flash to complete pairing
Pairing Success confirmation
Step 3: Pairing Success confirmation appears
KRAKEN Ready screen
Step 4: Ready screen - device is now paired and ready to program
After Pairing: Once paired, your KRAKEN will automatically connect to this cart in the future. You only need to pair once per cart with the USER VERSION.
USER VERSION Limitation: The USER VERSION can only be paired to ONE cart at a time. To use it on a different cart, you must unpair it first, which will erase all saved settings from the previous cart.
4

Adjustable Parameters

Once "Ready" is displayed, you can customize various cart performance parameters. The RXV 2025+ offers expanded control over acceleration, deceleration, and energy management.

Understanding the 2025+ Keypad: The RXV 2025+ has a slightly different button layout compared to earlier models. The keypad features:
  • Parameter button (top left) - Cycles through available parameters
  • Adjust button (below Parameter) - Changes the value of the selected parameter
  • Increase/Decrease buttons - Used for speed adjustments
  • Flash button - Saves all changes to the controller
Two Interaction Methods:

For ECO Mode and Buzzer (Toggle Parameters):
  1. Press the specific parameter button (ECO or Buzzer)
  2. Press the same button again to toggle ON/OFF
  3. Click "Flash" to save

For Acceleration, Deceleration, and Smart Regen (Multi-Option Parameters):
  1. Press the Parameter button to cycle to your desired parameter
  2. Press the Adjust button to cycle through the available values
  3. Click "Flash" to save

For Speed Adjustments:
  1. Use Increase/Decrease buttons to navigate to Forward or Reverse Speed
  2. Once the speed parameter is displayed, use Increase/Decrease to adjust speed
  3. Click "Flash" to save
KRAKEN Ready screen
Starting point - "Ready" screen with all parameters available

Available Parameters for RXV 2025+:

  • Forward Speed - Up to 25.5 MPH
  • Reverse Speed - Up to 7 MPH
  • Acceleration Selection - 4 levels (Gentle, Medium, Fast, Aggressive)
  • Deceleration Selection - 4 levels (Coast, Mild, Firm, Stout)
  • ECO Mode - Energy conservation mode (ON/OFF toggle)
  • Reverse Buzzer - Warning sound control (ON/OFF toggle)
  • Smart Regenerative Braking - Advanced energy recovery (ON/OFF)
Remember to Flash: After changing any parameter, you MUST click the "Flash" button to save your changes. Without flashing, changes are not permanently saved to the controller.
5

Forward & Reverse Speed Adjustment

Adjusting your cart's speed is the most common use of the KRAKEN Programmer. You have complete control over both forward and reverse speeds.

  • Use Increase/Decrease buttons to navigate to Forward Speed or Reverse Speed
  • Once the speed parameter is displayed, use Increase/Decrease to adjust in 0.5 MPH steps
  • Maximum: 25.5 MPH forward / 7 MPH reverse
  • Setting either to 0 MPH disables forward or reverse motion
  • Click "Flash" to save the speed setting
Speed Workflow: After flashing forward speed, reverse speed will automatically appear for adjustment. Set forward → Flash → Set reverse → Flash.

Example Workflow:

  1. Use Increase/Decrease to navigate to "Forward Speed" → Shows current speed (e.g., 15 MPH)
  2. Use Increase button to adjust to 25.5 MPH
  3. Click "Flash" to save
  4. Reverse Speed automatically appears
  5. Adjust to desired speed (e.g., 7 MPH)
  6. Click "Flash" again to save
Forward speed set to 25.5 MPH
Forward speed adjusted to maximum 25.5 MPH
Forward speed flash success
Forward speed successfully saved
Reverse speed set to 7 MPH
Reverse speed adjusted to maximum 7 MPH
Actual Speed with Larger Wheels: The speeds shown (25.5 MPH forward / 7 MPH reverse) are based on stock golf cart wheel sizes. Customers running larger wheels will see actual speeds around 30 MPH depending on their specific configuration.
Safety Reminder: Higher speeds require increased awareness and caution. Always operate your cart safely and in compliance with local regulations.
6

Acceleration Selection

The RXV 2025+ offers four distinct acceleration profiles, allowing you to customize how quickly your cart responds to throttle input. This is one of the most impactful settings for driving feel.

How to Adjust:
  1. Press the Parameter button (top left) until "Acceleration" appears on screen
  2. Press the Adjust button to cycle through the four levels (Gentle → Medium → Fast → Aggressive)
  3. Click "Flash" to save your selection

Acceleration Levels:

0 - GENTLE Gentle Acceleration

Smooth, gradual acceleration. Ideal for passengers or cautious driving.

1 - MEDIUM Medium Acceleration

Balanced acceleration. Good for everyday use and mixed terrain.

2 - FAST Fast Acceleration

Quick response. More spirited driving without being harsh.

3 - AGGRESSIVE Aggressive Acceleration

Maximum acceleration. Sports-car-like throttle response.

Pro Tip: Most users prefer Fast (2) or Aggressive (3) settings for the best performance experience. Start with Medium and work your way up to find your preferred feel.
Consider Your Passengers: Aggressive acceleration can surprise unprepared passengers. Choose Gentle or Medium when carrying children or elderly passengers for a smoother ride.
7

Deceleration Selection

Deceleration control determines how aggressively the cart slows down when you release the accelerator. The RXV 2025+ offers four deceleration profiles to match your driving style.

How to Adjust:
  1. Press the Parameter button (top left) until "Deceleration" appears on screen
  2. Press the Adjust button to cycle through the four levels (Coast → Mild → Firm → Stout)
  3. Click "Flash" to save your selection

Deceleration Levels:

0 - COAST Coast Deceleration

Minimal braking. Cart coasts freely when throttle released.

1 - MILD Mild Deceleration

Light regenerative braking. Gentle slowdown with energy recovery.

2 - FIRM Firm Deceleration

Moderate braking. Noticeable slowdown with good energy recovery.

3 - STOUT Stout Deceleration

Strong braking. Aggressive slowdown with maximum energy recovery.

How It Works: Higher deceleration settings use regenerative braking to convert kinetic energy back into battery charge. This extends range while providing a "one-pedal driving" feel similar to modern electric vehicles.
Pairing with Acceleration: For the best driving experience, match your deceleration to your acceleration setting:
  • Gentle Accel + Coast/Mild Decel = Smooth, relaxed driving
  • Medium Accel + Mild/Firm Decel = Balanced everyday driving
  • Fast/Aggressive Accel + Firm/Stout Decel = Sporty, responsive driving
Range Impact: Stout deceleration provides the most energy recovery and can extend your range by 10-15%. However, it may feel too aggressive for some drivers. Experiment to find your preferred balance between range and comfort.
8

ECO Mode

ECO Mode is an energy conservation feature that optimizes the cart's performance for maximum range and efficiency.

How to Toggle: Click the ECO Mode button to view the current setting (ON or OFF), then click again to toggle. Click "Flash" to save your selection.
OFF ECO Mode OFF

Full performance mode - maximum power and acceleration

ON ECO Mode ON

Energy saving mode - extended range with reduced power

What ECO Mode Does:

  • Reduces top speed by approximately 15-20% to conserve energy
  • Softens acceleration for smoother, more efficient power delivery
  • Optimizes motor efficiency to extend battery range
  • Increases regenerative braking to recover more energy
Range Extension: ECO Mode can extend your range by 20-30% depending on terrain and driving style. This is ideal for longer trips or when you're concerned about battery level.
When to Use ECO Mode:
  • Long trips where range is a concern
  • Flat terrain where maximum power isn't needed
  • Casual neighborhood driving
  • When battery level is getting low
Not Recommended For: Hilly terrain or situations where you need full power. The reduced performance in ECO Mode may make steep hills challenging.
9

Reverse Buzzer Control

The reverse buzzer (backup beeper) can be enabled or disabled based on your preference for quiet operation or safety awareness.

How to Toggle: Click the Buzzer button to view the current setting (ON or OFF), then click again to toggle. Click "Flash" to save your selection.
OFF Buzzer OFF

Silent reverse operation - no warning sound

ON Buzzer ON

Audible warning when reversing - safety alert

Popular for Residential Use: Many users prefer to disable the buzzer for quiet operation in residential neighborhoods, especially during early morning or evening hours.
Safety Reminder: The reverse buzzer provides an audible warning to pedestrians and other vehicles when you're backing up. When disabled, you must exercise increased caution and awareness when reversing, especially in crowded areas or around children and pets.
10

Smart Regenerative Braking

Smart Regenerative Braking is an advanced feature exclusive to the RXV 2025+ that intelligently manages energy recovery during braking and deceleration.

How to Adjust:
  1. Press the Parameter button (top left) until "Smart Regen" appears on screen
  2. Press the Adjust button to toggle between OFF and ON
  3. Click "Flash" to save your selection
OFF Smart Regen OFF

Standard regenerative braking based on deceleration setting

ON Smart Regen ON

Intelligent energy recovery optimized for terrain and speed

How Smart Regen Works:

When enabled, Smart Regenerative Braking uses advanced algorithms to:

  • Analyze terrain - Detects uphill/downhill and adjusts braking accordingly
  • Monitor speed - Optimizes energy recovery based on current velocity
  • Predict braking needs - Anticipates stops and maximizes energy capture
  • Balance comfort - Provides smooth deceleration while maximizing range
Range Benefits: Smart Regen can increase your range by an additional 5-10% beyond standard regenerative braking. On hilly terrain, the benefits are even more pronounced, potentially adding 15-20% to your range.
Especially Effective On Hills: Smart Regen truly shines on hilly terrain. Going downhill, it automatically increases regenerative braking to capture more energy while preventing excessive speed buildup. This means less wear on your mechanical brakes and more energy returned to your batteries.
Best Practice: Most users keep Smart Regen enabled at all times. It works seamlessly in the background to maximize efficiency without requiring any input from the driver. The system adapts to your driving style over time for optimal performance.
Interaction with Deceleration Setting: Smart Regen works in conjunction with your selected Deceleration level. It enhances the base deceleration setting rather than replacing it. For maximum range, pair Smart Regen ON with Firm or Stout deceleration.
11

View Faults

The KRAKEN can read and display diagnostic fault codes from your cart's controller:

  • Click "Fault" button to view active controller faults
  • The device actively scans in real-time
  • Use Increase/Decrease buttons to scroll up and down through multiple faults
  • Fault count is displayed (e.g., 1/5, 2/5, etc.) showing current fault and total fault count
  • Resolved faults will disappear automatically from view
Diagnostic Tool: The Fault feature is useful for troubleshooting issues with your cart. If a fault appears, refer to your cart's manual or contact support for assistance.
Fault diagnostic screen
Fault diagnostic screen showing controller status
12

Unpairing (USER VERSION)

To use your USER VERSION KRAKEN on a different cart, you must first unpair it from the current cart. Unpairing reverts the cart back to factory settings and frees the device to pair with another cart.

Warning: Unpairing will permanently delete all custom parameters and revert the cart to factory original settings. Make sure you want to do this before proceeding.

Unpair Process:

  1. Connect KRAKEN to the cart you want to unpair from
  2. When "Ready" appears, navigate to the Unpair option
  3. Click Unpair button
  4. Screen shows "Press Flash to Unpair"
  5. Click Flash to confirm and execute unpair
  6. Cart reverts to Setting Original Parameters (factory settings)
  7. You'll see "Unpair Success" confirmation
  8. Device is now free to pair with a different cart
Press Flash to Unpair screen
Step 1: Press Flash to confirm unpairing
Setting Original Parameters - factory settings restored
Step 2: Cart reverting to "Setting Original Parameters" (factory settings)
Unpair success confirmation
Step 3: "Unpair Success" - device is now available to pair with another cart
After Unpairing: The cart is now running on factory original settings with all custom parameters removed. Your KRAKEN is unpaired and can be connected to a different cart to begin the pairing process again.

Power Information

This device is powered by the cart. No external batteries are required.

Always Powered: As long as the KRAKEN is connected to your cart via the Curtis connector, it draws power directly from the cart's system.

Finished Programming

Once you've completed your programming session and applied all desired changes:

  • Disconnect the cable from your cart's connector
  • Replace the protective cap on the connector
  • Store the KRAKEN Programmer in its protective case until next use
Best Practice: The device should only remain connected during active programming sessions. Disconnecting after use helps preserve your cart's battery and protects the device's electronics.

Need Help?

If you experience any issues or have questions:

Important Disclaimer

Use of this device is at your own risk. The creators, developers, and distributors of the Kraken Programmer are not responsible or liable for any damage caused to your golf cart, vehicle components, or personal property resulting from improper use, incorrect programming, or misuse of this tool.

The terms "E-Z-GO" and "RXV" are used strictly for identification and descriptive purposes. We are not affiliated with or endorsed by Textron Inc., E-Z-GO, or any of their subsidiaries. All trademarks are the property of their respective owners.

Use this device only if you fully understand the changes being applied to your vehicle.