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RadRover Error 30 Troubleshooting Guide

In the unlikely event you see an error 30 message on your RadRover 5, follow the steps in the video and article below to troubleshoot. The steps in this guide can also be used to troubleshoot other RadRover model years.

By first checking that all connectors are secure and in good condition, you can resolve or help identify the cause of the error message.

Tools Needed:

  • Flat side cutters
  • Flathead screwdriver
  • A camera
  • String (several inches longer than the length of the downtube)
  • Electrical tape
  • Zip ties

Connector Check Steps:

Perform the following steps on each connector until the error message is resolved.

  1. Get the bike ready for maintenance. Turn off the bike, remove the battery, and press MODE to discharge remaining power.

  2. Check the battery and battery mounting tray terminal contacts. If it's in good condition, reinstall the battery and turn on the bike to check if the issue is resolved. If the bike will not turn on, remove the battery and discharge remaining power.
  3. Check the connection between the battery and the controller. The battery connector is the large connector located near the bottom bracket. The connector is flat on one side and is black inside with two large prongs. Follow the steps below to check the connector.

  4. Locate and unplug the connector. Follow the cable from the part to the connector. Snip zip ties for easier access, then pull each side of the connector directly apart without twisting.

  5. Inspect the inside and reconnect. If the inside of the connector is wet, dirty, or damaged, take a photo and contact Product Support. If it looks normal, line up the internal notch and pins (and external indicators) and press directly together without twisting.


  6. Check if the issue is resolved. Reinstall the battery and turn on the bike. If the issue continues, turn off the bike, remove the battery, and discharge remaining power.
  7. Repeat steps 4 through 6 on each connector listed below until the error is resolved. Once resolved, replace zip ties and trim to be flush and smooth. Test the bike fully and ride Rad!

Click the headings below to complete the connector check.

Display Connector
Location: Handlebar area

Color: Black inside

Untwist the metal portion of the connector, then pull directly apart without twisting. To reconnect, align the internal notch and pins, and twist the metal portions until the connector is secure.


Wiring Harness Connector
Location: At the bottom of the downtube

Color: Black inside

To access the connector:

  1. Turn the handlebar to the side to create cable slack, then feed the wiring harness cable into the downtube.

  2. Use a flat head screwdriver to carefully unseat the rubber grommet at the bottom of the downtube.

  3. Unplug, inspect, and reconnect the wiring harness connector. Gently pull the connector out of the downtube and check the connector.

  4. Insert the connector into the downtube. Carefully push the connector back into the downtube, reinstall the grommet, and check if the issue is resolved.


If the connector disconnects inside of the downtube:

  1. Remove the grommet on the upper cable opening and pull the wiring harness out of the downtube fully. Pull the cable and top half of the connector out of the cable opening in the frame.

  2. Tie the string to the top half of the connector end and tape it to keep it secure.

  3. Insert the string and connector end into the upper cable opening. Use the cable to help move the string through the downtube and out of the lower cable opening.

  4. Pull the string at the bottom of the downtube to pass the connector end through the downtube, out of the lower cable opening, and access the connector.

  5. Remove the tape, untie the string, and check the connector.
Motor Connector
Location: Near chainstay, on the right side of the bike

Color: Black inside


Taillight Connector
Location: Back of the bike

Color: Blue inside


Second Taillight Connector (For Bikes with a Rear Rack Only)
Location: On rear rack

Color: Blue inside

This connector only exists on bikes that have a rear rack installed. Trace the cable from the first taillight connector to the connector plugged into the controller.

Left Brake Connector
Location: Handlebar area - left side

Color: Red inside


Right Brake Connector
Location: Handlebar area - right side

Color: Red inside


Throttle Connector
Location: Handlebar area

Color: Yellow inside


Headlight Connector
Location: Front of the bike

Color: Red inside


Pedal Assist (PAS) Sensor Connector
Location: Near seat tube

Color: Yellow inside


Caution.png If you are not confident in your ability to safely and successfully perform all steps, we recommend having the work performed or checked by a local, certified, and reputable bike mechanic.


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