This article explains how to troubleshoot common TFT and KAABO central display drive system issues on the Kaabo Mantis King GT. 

Use this article if your scooter:

• Does not cut motor power when braking
• Continues accelerating while braking
• Has one motor not working in dual-drive mode
• Powers on but will not accelerate
• Has motors that do not spin
• Has reduced acceleration in certain modes
• Only accelerates correctly in ECO mode
• Has poor battery range

Before You Start

Please prepare the following:

• Your order number
• A photo or video of the issue
• A photo of the display
• A video showing the issue while riding or testing
• A photo/video of any error codes
• Confirmation whether:
  • the scooter powers on
  • the motors engage
  • the issue affects single-drive or dual-drive mode
  • braking cuts motor power correctly
• Details about whether the issue started after:
  • rain or water exposure
  • impact or crash
  • transport
  • modification
  • display replacement
  • third-party repair

If there is visible damage, please also prepare clear photos.

Safety Warnings

• Do not continue riding if the scooter accelerates unexpectedly or braking does not cut motor power.
• Do not continue riding if there is motor resistance, overheating, smoke, burning smell, or visible wiring damage.
• Do not work on wiring while the scooter is powered on unless specifically required for testing.
• Do not force connectors together.
• Stop and contact support if unsure.

Brake Does Not Cut Motor Power

This issue applies if the scooter continues driving when the brake lever is pressed. 

This may be caused by:

• Brake lever sensor faults
• Loose wiring
• Main line wiring faults

Step 1 – Check for the Brake Indicator

Lift the scooter safely so the wheels are off the ground. 

Turn the display on and press the left brake lever.

Check whether the display shows an exclamation mark or brake indicator.

If no brake indicator appears

Open the battery compartment cover and inspect the white wire on the SM9 connector between the multifunction switch and controller A. 

Check for:

• Loose wiring
• Improperly connected wiring
• Unplugged connectors

If loose or disconnected wiring is found

Reconnect the wiring securely and test again.

If the wiring appears normal

The left brake lever may require further inspection.

Please contact support with:

• A video showing the issue
• Photos of the SM9 connector
• Photos of the left brake lever wiring

Step 2 – Check the Right Brake Lever

Lift the scooter safely so the wheels are off the ground. 

Turn the display on and press the right brake lever.

Check whether the display shows an exclamation mark or brake indicator.

If no brake indicator appears

Open the battery compartment cover and inspect the white wire on the SM9 connector between the display and controller A. 

Check for:

• Loose wiring
• Improperly connected wiring
• Unplugged connectors

If loose or disconnected wiring is found

Reconnect the wiring securely and test again.

If the wiring appears normal

The right brake lever may require further inspection.

Please contact support with:

• A video showing the issue
• Photos of the SM9 connector
• Photos of the right brake lever wiring

Step 3 – Main Line Inspection Required

If the issue still remains after the wiring checks, the multifunction switch main line or display main line may require further inspection. 

Please contact support with:

• Photos of all related connectors
• A video showing the issue
• Details about any previous repairs or modifications

Rear Motor Brakes Correctly but Front Motor Continues Accelerating

This issue applies if:

• The rear motor electronically brakes correctly
• The front motor continues accelerating while braking 

Step 1 – Check for Loose Wiring

Inspect all accessible motor and controller wiring for:

• Loose waterproof connectors
• Bent copper pins
• Damaged wiring

If wiring issues are found

Reconnect the wiring securely and test again.

If no wiring issues are found

Further inspection of controller B may be required. 

Please contact support with:

• A video showing the issue
• Photos of the controller wiring
• Photos of any damaged connectors

Front Motor Brakes Correctly but Rear Motor Continues Accelerating

This issue applies if:

• The front motor electronically brakes correctly
• The rear motor continues accelerating while braking 

Step 1 – Check for Loose Wiring

Inspect all accessible motor and controller wiring for:

• Loose waterproof connectors
• Bent copper pins
• Damaged wiring

If wiring issues are found

Reconnect the wiring securely and test again.

If no wiring issues are found

Further inspection of controller A may be required. 

Please contact support with:

• A video showing the issue
• Photos of the controller wiring
• Photos of any damaged connectors

Rear Motor Works but Front Motor Does Not Spin and Has Resistance

This issue applies in dual-drive mode. 

Step 1 – Check for Front Motor Resistance

Open the battery compartment cover and disconnect the yellow, green, and blue phase wires between the front motor and controller B. 

Important Safety Note

Do not allow the disconnected phase wire terminals to touch each other. 

Manually rotate the front motor.

If the motor still has resistance

The front motor may require further inspection.

Please contact support with:

• A video showing the resistance
• Photos of the motor wiring

If the resistance disappears

Controller B may require further inspection.

Please contact support with:

• Photos of the controller wiring
• A video showing the issue

Front Motor Works but Rear Motor Does Not Spin and Has Resistance

This issue applies in dual-drive mode. 

Step 1 – Check for Rear Motor Resistance

Open the battery compartment cover and disconnect the yellow, green, and blue phase wires between the rear motor and controller A. 

Important Safety Note

Do not allow the disconnected phase wire terminals to touch each other. 

Manually rotate the rear motor.

If the motor still has resistance

The rear motor may require further inspection.

Please contact support with:

• A video showing the resistance
• Photos of the motor wiring

If the resistance disappears

Controller A may require further inspection.

Please contact support with:

• Photos of the controller wiring
• A video showing the issue

Scooter Powers On but Motors Do Not Accelerate

This issue applies if:

• The display powers on
• The motors do not spin when accelerating 

Step 1 – Check for Error Codes

Check whether the display shows an error code. 

If an error code is displayed

Troubleshoot the scooter based on the displayed error code first.

Then inspect all waterproof connectors for:

• Loose connections
• Bent copper pins

If bent pins or loose wiring are found

Reconnect the wiring carefully and test again.

If no visible wiring issues are found

Continue to Step 2.

Step 2 – Check the Throttle Signal

Further electrical testing may be required.

A voltage test between the green and black wires of the XHB8 connector may be required while operating the throttle. 

If you are not comfortable performing voltage tests

Stop troubleshooting and contact support.

Please provide:

• A video showing the issue
• Photos of all visible connectors
• Any error codes shown on the display

Step 3 – Controller Voltage Check

Further testing of the SM2 connector voltage output may be required. 

This step requires electrical testing equipment and technical experience.

Please contact support with:

• Any voltage readings obtained
• Photos of the controller connectors
• A video showing the issue

Rear Wheel Spins but Front Wheel Does Not Spin

This issue applies in dual-drive mode. 

Step 1 – Check for Error Codes

If an error code appears on the display:

• Troubleshoot the error code first
• Inspect all waterproof connectors for bent pins or loose wiring 

If wiring damage is found

Reconnect the wiring securely and test again.

If the wiring appears normal

Continue to Step 2.

Step 2 – Check for Motor Resistance

Manually rotate the front motor and check for resistance. 

If there is motor resistance

Do not continue riding.

Further inspection is required.

Please contact support with:

• A video showing the resistance
• Photos of the motor wiring

If there is no resistance

Continue to Step 3.

Step 3 – Test the Front Motor Connection

Further controller and motor testing may be required by swapping the front motor connection to controller A. 

This step requires technical electrical inspection.

Please contact support with:

• A video showing the issue
• Photos of all controller and motor connectors

Battery Runs Flat Quickly / Poor Riding Range

This issue applies if:

• The battery reaches full charge unusually quickly
• The scooter loses power after a short distance 

Step 1 – Check the Charger

Confirm the charger is operating normally before continuing.

If the charger is faulty

Resolve the charger issue first.

If the charger operates normally

Further battery inspection may be required. 

Please contact support with:

• A video showing the battery percentage dropping
• Charger behaviour video
• Details about riding distance and riding mode

Scooter Only Accelerates Properly in ECO Mode

This issue applies if:

• ECO mode works normally
• Other speed modes slow down or lose acceleration
• Restarting the scooter temporarily fixes the issue 

Step 1 – Determine Whether the Issue Happens in Single or Dual Drive

If the issue happens in single-drive mode

Further inspection of controller A may be required. 

Please contact support with:

• A video showing the issue
• Details about which drive mode is affected

If the issue happens in dual-drive mode

Continue to Step 2.

Step 2 – Controller Isolation Test

The troubleshooting process may require disconnecting:

• The 7-pin waterproof connector between controller A and controller B
• The battery connection to controller B 

This is an advanced electrical inspection step.

Please contact support before continuing.

Provide:

• A video showing the issue
• Photos of the controller wiring
• Confirmation whether the issue returns after restarting

Step 3 – Display Settings Check

If ECO mode works correctly but other modes do not accelerate properly even after restarting, the current or speed settings for the display modes may have been changed. 

Please send support:

• Photos of all gear mode settings on the display
• A video showing the issue
• Details about any recent display setting changes

When To Contact Support

Please contact support if:

• The scooter accelerates unexpectedly
• Braking does not cut motor power
• There is motor resistance
• The issue remains after completing the checks above
• There is visible wiring damage
• There was water exposure, impact, modification, or third-party repair
• The scooter shows persistent error codes
• Internal electrical inspection may be required
• The scooter is unsafe to ride

What To Send Support

Please provide:

• Your order number
• A photo/video of the issue
• A photo of the display
• A photo/video of any error codes
• A video showing motor behaviour
• Photos of visible connector or wiring damage
• Confirmation of:
  • water exposure
  • impact or crash
  • modification
  • display replacement
  • third-party repair
• Details of troubleshooting already completed

Important Safety Notes

• Do not continue riding if braking does not cut motor power correctly.
• Do not ride with motor resistance, overheating, visible wiring damage, smoke, or burning smell.
• Do not work on wiring while the scooter is powered on unless specifically required for testing.
• Do not allow disconnected motor phase wires to touch each other.
• Do not force connectors together.
• Stop troubleshooting and contact support if unsure.