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RadMini Error 30 Troubleshooting Guide

To troubleshoot an error 30 message on a Radmini, perform a connector check to ensure all connectors are secure and in good condition.

This guide uses photos of RadMini models from 2016-2018, but the steps will be similar for most RadMini models.

Tools Needed:

  • Flat side cutters
  • Phillips head screwdriver (for 2016-2018 models)
  • A camera
  • Zip ties 

Connector Check Steps:

Perform the following steps on one connector at a time 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.

    For 2016-2018 models: Use a Phillips head screwdriver to remove the cover plate on the box beneath the battery to access the connectors inside.

  5. Inspect the inside of the connector and plug it back together. 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. On 2016-2018 models, reinstall the cover plate on the box beneath the battery. 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: Near seat tube

Color: Black inside

Motor Connector
Location: Near the chainstay, on the right side of the bike

Color: Black inside

Taillight Connector (for RadMini made in and after 2019 only)
Location: Back of the bike

Color: Blue inside  

Second Taillight Connector (For RadMini made in and after 2019 with a Rear Rack Only)
Location: on the rear rack

Color: Blue inside

This connector only exists on bikes made in and after 2019 that also have a rear rack installed. Trace the cable from the first taillight connector to the connector plugged into the controller.

Brake Connectors
Location: Handlebar - left and right side

Color: Red inside

Check one brake connector, then test the bike to see if the issue is resolved. If not, check the other brake connector.   

Throttle Connector
Location: Handlebar area

Color: Yellow inside

Headlight Connector
Location: Front of the bike

Color: Red inside

PAS Sensor Connector
Location: Near the bottom bracket

Color: Yellow inside  

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


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