Rad Power Bikes RadRover 5: error 30 or won't turn on

Your RadRover 5 shows error 30, or it won't turn on after a battery check. Rad's RadRover 5 (2020) connector check guide covers both, and Rad says the same steps can help with other RadRover model years. The short answer: a connector has worked loose or picked up water or dirt. Check the three main plugs first, then isolate the accessories.

Most likely cause

Error 30 is Rad's communication code, the display and controller losing contact. Rad's color display table gives the usual causes on its newer bikes as a loose connector, a damaged cable or a faulty controller, and the RadRover guide focuses on the connectors.

Other causes to rule out

• Damaged or dirty battery or mounting tray contacts. Inspect them first. (Rad)
• A faulty accessory. Rad says that if the error clears while one part is unplugged, that part may need replacing. (Rad)
• A stuck brake lever or throttle at power on gives its own code on Rad displays. See Rad Power Bikes error codes.

How to confirm

Check each plug with the battery out, then reinstall the battery and power on before moving to the next.

1. Inspect the battery and mounting tray contacts.
2. Battery connector near the bottom bracket, black inside.
3. Display connector at the handlebar, black inside.
4. Wiring harness connector at the bottom of the down tube, black inside. Rad's tool list includes string and electrical tape, which its guides use to keep this connector from slipping into the frame.

Then unplug these one at a time and power on with each left unplugged:

1. Right chain stay connector (black).
2. Rear connector (blue) and, on bikes with a rack, the rack connector (blue).
3. Left and right handlebar connectors (red).
4. Handlebar connector (yellow).
5. Front connector (red).
6. Seat tube connector (yellow).

Pull most connectors straight apart without twisting. Rad notes the display and harness connectors have metal collars that twist to lock. Line up the notch, pins and arrows when you reconnect.

Fix options

Reseat the connectors (easy)

Rad lists flat side cutters, a flathead screwdriver, a camera, string, electrical tape and zip ties.

Replace the faulty part (moderate, with Rad support)

If the error clears with a part unplugged, or you find moisture, dirt or damage, photograph it and contact support for the replacement.

Motor wheel or controller (pro)

If support points to the motor or controller, Rad's RadRover rear wheel replacement video shows what a motor wheel swap involves. Controller work is for Rad or a shop.

Parts

• Zip ties
• Electrical tape
• Replacement accessory, cable or motor wheel, only as Rad support directs

Videos

When to get a pro

Get help for wet or damaged connectors, damaged battery contacts, or if error 30 survives the full check. Trim new zip ties flush and test the bike fully before riding. See inspect and clean connectors and e-bike won't turn on.

Sources

• RadRover 5 (2020) connector check guide, support.radpowerbikes.com
• color display table, support.radpowerbikes.com
• RadRover rear wheel replacement video, youtube.com

Stuck after these checks? Find a shop near you.