E-bikes
Rad Power Bikes
Repair guides, troubleshooting and the official manuals for Rad Power Bikes. Pick your model for everything that applies to it.
Rad Power Bikes guides
- Rad LCD display bikes dead controller or display: replacement optionsHow-to guideFor the RadCity 3 and 4, RadRover 5, RadWagon 4 and RadMini 4: Rad's own display and controller first, an Area 13 harness, and which aftermarket kits are outside this guide.
- Rad Power Bikes battery and charger guideHow-to guideHow to charge a Rad Power Bikes battery, what the charger and battery lights mean, what to check when it won't charge, how to store it, and when to stop using it, from Rad's official guides.
- Rad Power Bikes error codes by displayReferenceWhat Rad Power Bikes error codes mean on the Color Display, Rad UI remote and display, and older LCD and LED displays, using only codes from Rad's official support pages, with safe checks for each.
- Rad Power Bikes RadCity 3, RadCity 4 and RadCity Step-Thru 3: error 30 on the LCD displayTroubleshootingRad calls error 30 on the RadCity 3, RadCity 4 and Step-Thru 3 a communication error. Its fix is a connector check: battery, display and the harness plug inside the downtube, then an unplug test for the other parts.
- Rad Power Bikes RadCity 5 Plus: error 30 or won't power onTroubleshootingOn the 2021 RadCity 5 Plus, an error code on the Rad UI or a bike that won't turn on usually traces to a connector that vibrated loose. Rad's guide walks from the display plugs to the harness and battery connectors.
- Rad Power Bikes RadCity 5 Plus: parts and specsReferenceReplacement parts and specs for the RadCity 5 Plus: 27.5 x 2.0 tires and tubes, hydraulic brakes with 180 mm rotors, 7-speed freewheel, LCD display, semi-integrated battery and charger, with Rad's part links and prices.
- Rad Power Bikes RadCity and RadMini with the LCD display: error codesReferenceThe codes Rad lists for its LCD display on the RadCity (2016 to 2020, including RadCity 3, 4 and Step-Thru) and the RadMini, including the RadMini 4, with the first safe check for each.
- Rad Power Bikes RadExpand 5: parts and specsReferenceReplacement parts for the RadExpand 5 folding bike from Rad's own listings: 20 x 4 tires and Schrader tubes, Tektro pads and levers, LED display and LCD upgrade, charger, battery and lights, with prices.
- Rad Power Bikes RadMini 4: error 30 on the LCD displayTroubleshootingError 30 on a RadMini 4 calls for Rad's RadMini connector check: battery, display and harness plugs first, then unplug the motor, lights, brakes, throttle and PAS one at a time to find the faulty part.
- Rad Power Bikes RadMission: error codes on the LED displayReferenceHow the RadMission's LED display flashes its pedal assist lights to show a fault, what each pattern means in Rad's guides, and the first safe check.
- Rad Power Bikes RadMission: pedal assist level 2 light flashing, motor won't run (error 24)TroubleshootingOn Rad's LED display, a flashing level 2 light is error 24, which Rad says often means a motor hall fault. Check the motor connector at the left chainstay, run Rad's wheel test, then send results to Rad.
- Rad Power Bikes RadMission: won't power on, or all pedal assist lights flash (error 30)TroubleshootingOn the RadMission's LED display, error 30 shows as all pedal assist lights flashing, or the bike won't power on. Rad's fix is a connector check, then an unplug test to find a failed part.
- Rad Power Bikes RadRover 5: error 30 or won't turn onTroubleshootingError 30 on a RadRover 5 is a communication fault, usually from a loose or dirty connector. Rad's guide checks the battery, display and harness plugs first, then unplugs each accessory to find the culprit.
- Rad Power Bikes RadRover 6 Plus: error 30 on the display or the bike won't power onTroubleshootingOn the RadRover 6 Plus, Rad treats error 30 and a bike that won't power on as a connector problem. Check the display and main harness plugs first, then unplug parts one at a time to find the one causing it.
- Rad Power Bikes RadRover 6 Plus: parts and specsReferenceReplacement parts and specs for the RadRover 6 Plus fat tire bike: 26 x 4 tires and tubes, hydraulic brakes, semi-integrated battery, charger and lights, with Rad's part links and prices.
- Rad Power Bikes RadRunner 1 and RadRunner 2: parts and specsReferenceReplacement parts and specs for the RadRunner 1 and 2: 20 x 3.3 tires, Schrader tubes, Tektro mechanical brakes with 180 mm rotors, the LED display, controller, charger and battery, with Rad's part links and prices.
- Rad Power Bikes RadRunner 1, 2 and Plus: error 24 or assist level 2 flashingTroubleshootingOn RadRunner models, error 24 on the LCD or a flashing assist level 2 on the LED display points to a motor hall fault. Check the motor connector on the left chain stay, run Rad's throttle and rollback tests, then call support.
- Rad Power Bikes RadRunner 1, 2, Plus and RadExpand 5: error 30 or all assist lights flashingTroubleshootingError 30 on a RadRunner or RadExpand 5 is a communication error, usually a connector that has worked loose. Follow Rad's connector check order, from the display plug to the harness inside the down tube.
- Rad Power Bikes RadRunner 1, 2, Plus and RadExpand 5: error codesReferenceHow the LED display on the RadRunner 1, RadRunner 2, RadRunner Plus and RadExpand 5 shows a fault with flashing assist lights, what each pattern means, and the first safe check.
- Rad Power Bikes RadRunner 3 Plus and RadTrike (Rad UI): error codesReferenceHow the Rad UI remote and display show error codes on the RadRunner 3 Plus and RadTrike, how to read the bars, what each code means, and the first safe check.
- Rad Power Bikes RadRunner 3 Plus: error 30 on the RadUI displayTroubleshootingA RadRunner 3 Plus showing error 30 or refusing to power on usually has a loose or dirty connector. Rad's 2023 guide checks the RadUI plugs first, then the junction box, battery and each accessory one at a time.
- Rad Power Bikes RadRunner 3 Plus: parts and specsReferenceReplacement parts and specs for the RadRunner 3 Plus: Kenda K905 20 x 3.3 tires, Tektro HD-E350 hydraulic brakes with 180 mm rotors, 7-speed freewheel, semi-integrated battery and charger, with Rad's part links and prices.
- Rad Power Bikes RadRunner Plus: parts and specsReferenceReplacement parts and specs for the first RadRunner Plus: 20 x 3.3 Kenda K-Rad tires, Tektro Aries mechanical brakes with 180 mm rotors, 7-speed freewheel, LCD display, charger and battery, with Rad's part links and prices.
- Rad Power Bikes Radster, RadWagon 5 and RadExpand 5 Plus: error 21 or 23 after climbing hillsTroubleshootingError 21 or 23 on Rad's color display after a long climb or heavy load usually means the system got too hot or drew abnormal current. Let it cool, then check the motor connector, and call support if it happens on flat ground.
- Rad Power Bikes Radster, RadWagon 5 and RadExpand 5 Plus: error 24 on the color displayTroubleshootingError 24 on Rad's color display means a motor hall fault, a lost link between the motor and controller. Start at the motor connector on the chain stay, then know when it is a cable, motor or controller job.
- Rad Power Bikes Radster, RadWagon 5 and RadExpand 5 Plus: error 30 on the color displayTroubleshootingError 30 on Rad's color display is a controller to display communication error. On the Radster, RadWagon 5 and RadExpand 5 Plus, check the six front harness plugs, then the controller plugs.
- Rad Power Bikes Radster, RadWagon 5 and RadExpand 5 Plus: error codesReferenceEvery code Rad lists for its color display bikes, the Radster Road, Radster Trail, RadWagon 5 and RadExpand 5 Plus, with what each means and the first safe check.
- Rad Power Bikes RadTrike: error 30 or battery light flashing with a full batteryTroubleshootingOn the RadTrike, error 30 can show as a single flashing battery bar that looks like a low battery warning. If the battery is charged, treat it as a connection fault and follow Rad's connector check.
- Rad Power Bikes RadWagon 4: error 30 on the displayTroubleshootingError 30 on a RadWagon 4 is handled with Rad's RadWagon connector check: battery, handlebar and seat tube plugs first, then unplug the motor, lights, brakes, throttle and PAS one at a time.
- Rad Power Bikes RadWagon 4: parts and specsReferenceReplacement parts and specs for the RadWagon 4 cargo bike: 22 x 3 tires and tubes, the tire recall check, Tektro Aries mechanical brakes with 180 mm rotors, 7-speed freewheel, charger and battery, with Rad's part links and prices.
- Rad Power Bikes RadWagon 4: tire keeps going flat or blows outTroubleshootingRepeated flats or blowouts on a RadWagon 4 sold from 2020 to 2022 may be the recalled rim strips and ribbed sidewall tires. Check the recall first, then work through normal flat checks.
- Rad Power Bikes troubleshooting by symptomTroubleshootingSafe, step by step checks for common Rad Power Bikes problems, from a bike that won't power on to error codes, cutting out, brakes and flats, with links to Rad's official guides.
- RadRunner dead controller or display: aftermarket replacement optionsHow-to guideReplacement paths for a failed controller or display on the RadRunner 1, 2 and Plus: Rad's own parts first, Rad's LCD display upgrade, an Area 13 harness, and what's outside this guide.
Models
- RadBurroE-bike
- RadCity 3E-bike, 3 model guides
- RadCity 4E-bike, 3 model guides
- RadCity 5 PlusE-bike, 2 model guides
- RadCity Step-Thru 3E-bike, 3 model guides
- RadExpand 5E-bike, 3 model guides
- RadExpand 5 PlusE-bike, 4 model guides
- RadMini 4E-bike, 3 model guides
- RadMini Step-Thru 2E-bike
- RadMission 1E-bike, 3 model guides
- RadRover 4E-bike
- RadRover 5E-bike, 2 model guides
- RadRover 6 PlusE-bike, 2 model guides
- RadRover Step-Thru 1E-bike
- RadRunner (2025)E-bike
- RadRunner 1E-bike, 5 model guides
- RadRunner 2E-bike, 5 model guides
- RadRunner 3 PlusE-bike, 3 model guides
- RadRunner MaxE-bike
- RadRunner PlusE-bike, 5 model guides
- Radster RoadE-bike, 4 model guides
- Radster TrailE-bike, 4 model guides
- RadTrikeE-bike, 2 model guides
- RadWagon 3E-bike
- RadWagon 4E-bike, 4 model guides
- RadWagon 5E-bike, 4 model guides
Troubleshooting that applies to most models
- Battery dies fast or range droppedTroubleshootingYour e-bike used to go further on a charge. How to tell normal wear and riding conditions from a battery or charger problem.
- Battery won't chargeTroubleshootingThe charger light doesn't change or the battery won't go up. Safe checks on the charger, the outlet and the port, and when to stop.
- Clicking, grinding or squeaking noisesTroubleshootingWhere e-bike noises usually come from: the chain and gears, the brakes, loose bolts, the cranks and bearings, or the motor.
- Display blank, flickering or frozenTroubleshootingThe handlebar display won't show anything, flickers or freezes. Usually a plug, the battery, water or the display itself.
- Display works but no pedal assistTroubleshootingThe display turns on, but the motor doesn't help when you pedal. Check the assist level, the speed sensor and the brake cut-offs.
- E-bike error codes: what they mean and what to try firstTroubleshootingYour e-bike display shows an error code. Here's how to read it, the safe things to try yourself, and where to find your system's official code list.
- E-bike or scooter won't turn onTroubleshootingNothing happens when you press the power button. Work through the battery, the key and the plugs before assuming the worst.
- Motor cuts out or power comes and goesTroubleshootingThe motor stops helping on and off, over bumps or on hills. Usually a loose connection, a brake sensor, heat or a tired battery.