E-bike repair: what you can do yourself and when to call a pro
Which e-bike jobs are safe at home and which need a trained tech. A plain list, so you can fix what's easy and know when to stop.
The Pedalwise team started this page from official manuals, support pages and repair videos. Fixed this yourself, or spotted something wrong? Help improve it.
Plenty of e-bike care is the same as any bike. The battery and electrical side is where a mistake gets expensive or dangerous, and some systems need the maker's own tools.
Usually fine to do yourself
- Checking and pumping tires to the pressure on the sidewall, and fixing a flat (Park Tool). Our flat tire guide covers hub-motor wheels.
- Cleaning and lubing the chain, and checking it for wear with a chain checker (Shimano maintenance tips, Park Tool chain wear).
- Checking brake pads and rotors, and swapping disc pads (Park Tool). See brakes.
- Restarting the system, reseating the battery and checking plugs you can see (Lectric quick plug check).
- Wiping the bike clean with the battery and display off, no pressure washer (Bosch owner guide).
Call a pro for
Never open a battery pack or charger, and don't use a pack that has been rebuilt by someone unqualified. Bosch says only trained personnel may open a battery housing, and CPSC warns against reworked packs and used cells. Battery trouble goes to a pro. Find a shop.
- Anything inside the battery or charger (Bosch battery safety, CPSC micromobility center).
- Dirty, damaged or wet battery contacts. Rad's own guide says to stop and contact support rather than clean them (Rad no-power guide).
- Hydraulic brake bleeds, unless you have the right kit and the right fluid. Mixing DOT and mineral oil can damage parts and cause brake failure (Park Tool).
- Diagnostics and firmware on dealer systems. Bosch dealers use a diagnostic tool to read errors and update software (Bosch owner guide). Shimano owners can see codes and update some settings with the free E-TUBE PROJECT apps, and dealers use the PC version (Shimano STEPS FAQ).
- Crunchy bearings, or play or clicks in the cranks (Shimano maintenance tips).
- A rear hub-motor wheel if you don't have a torque wrench, because the axle nuts need the maker's torque (Himiway).
Before you open anything
Read your warranty. Bosch says opening a battery voids its certified condition, and Lectric says water damage isn't covered under its warranty (Bosch battery safety, Lectric). Many makers also offer a first check at the dealer. Bosch mentions one often offered about four weeks or 186 miles after purchase (Bosch owner guide).
Sources
- Tire and tube removal and installation, Park Tool
- Spring cleaning and maintenance, Shimano
- When to replace a worn chain, Park Tool
- Disc brake pad removal and installation, Park Tool
- Quick connect plug check, Lectric eBikes
- eBike owner's guide (US), Bosch eBike Systems
- Battery handling and safety, Bosch eBike Systems
- Micromobility information center, CPSC
- Troubleshoot a bike that won't turn on (external battery), Rad Power Bikes
- How to bleed Shimano flat bar hydraulic brakes, Park Tool
- Shimano STEPS FAQ, Shimano
- Fixing a flat on a rear hub motor fat ebike, Himiway
- How waterproof is the bike, Lectric eBikes
Stuck after these checks? Find a shop near you.
If these steps didn't fix it, find a shop near you in our partner network of shops that work on electric rides.
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