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Shimano STEPS error E013: Drive unit firmware error
Shimano STEPS (all drive units, shown on SC-E5000/E6100/E7000/E8000 displays and via EW-EN100 LED)Dealer neededRide with caution
E013 means the firmware in the drive unit is corrupted or did not verify. This is typically the result of an interrupted or failed update, though it can appear spontaneously. Assist is disabled until the firmware is rewritten.
Likely causes
- Firmware update interrupted (battery ran low, cable pulled, app crashed)
- Update performed with an unsupported E-TUBE version or wireless dongle
- Memory fault inside the drive unit controller
How to fix Shimano STEPS error E013
- Power-cycle once; occasionally the verification simply reruns and passes
- If you attempted an update with the E-TUBE RIDE/PROJECT app, retry it with a fully charged battery and a stable connection
- Do not ride around on it; the code will not go away on its own
- Book a dealer visit for a firmware rewrite with E-TUBE PROJECT Professional
Go to a dealer if: A dealer with the wired E-TUBE PROJECT Professional setup is usually needed to force a firmware rewrite; the consumer app frequently cannot recover from E013.
Warranty: If the failed update was done at a dealer, it is on them; a spontaneous E013 within the warranty period is a Shimano warranty case.
Typical cost: Often just a workshop labour charge for the reflash; a drive unit that will not accept firmware is a costly exchange.
Warranty: If the failed update was done at a dealer, it is on them; a spontaneous E013 within the warranty period is a Shimano warranty case.
Typical cost: Often just a workshop labour charge for the reflash; a drive unit that will not accept firmware is a costly exchange.
Still stuck? Take a photo of the display and show it to a local e-bike workshop. Bring the bike's system name (e.g. Bosch Performance Line CX) and the exact code; that saves diagnostic time and money.
Frequently asked
Can I reset E013 myself?
Not really. Retrying an update from the app sometimes works, otherwise the dealer has to reflash.
Can I keep riding with E013?
Assist is off. You can pedal it home as a heavy bike.
Is E013 covered by warranty?
Generally yes within the warranty period, unless the update was botched with non-standard tools.
Related Shimano STEPS codes
Not an official Shimano STEPS document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.