Watch the video, read through the instructions below, and contact Rad Power Bikes Technical Support if you have questions. 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.
1. Power off the bike. Ensure the bike is in the off position and use the key to remove the battery. Once removed, press and hold the “MODE” button on the LCD Display Remote until the display remains off for about two seconds (it may flash on briefly). This ensures the power is fully discharged from the bike and it is safe to work on.
2. Gather the tools and parts needed: a Phillips head screwdriver, flat side cutters, a few replacement zip ties, and the replacement controller.
3. Snip zip ties that hold the controller's wires to the frame.
4. Disconnect four connectors. Locate the wiring harness, PAS sensor, and the battery connectors and, holding the connector housing, pull directly apart without twisting to unseat the connectors. Locate the motor connector on the chainstay, carefully snip the zip ties holding the motor cable to the bike frame, the pull apart to disconnect. Note: the wiring harness is located partially inside the frame. To provide enough slack to pull out of the cable opening at the bottom of the downtube, turn the handlebars all the way to the right. Then pull gently on the wire to pull the connector out of the cable opening and pull apart to disconnect.
5. Remove the old controller. Use a Phillips head screwdriver to remove the bolts holding the old connector from the brackets with the Phillips screwdriver.
6. Install the new controller. Use a Phillips head screwdriver to reinstall the bolts to hold the new controller in place securely.
7. Reconnect the four connectors. Locate the wiring harness, PAS sensor, the battery, and motor cable connectors. For each connector, align the internal pins and external arrows and carefully press the connector ends directly together without twisting to fully seat the connection. Use replacement zip ties to attach the motor cable to the chainstay on the frame and carefully snip the zip tie excess. Feed the wiring harness connector back into the frame through the cable opening in the downtube.
8. Reinstall the battery, test the bike fully, and have your work inspected by a certified, reputable bike mechanic.
For questions or assistance, please contact Rad Power Bikes Technical Support by email to email@example.com or by phone to (800) 939-0310 x 2.