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E-bike problems without an error code
No code on the display? Start from the symptom.
E-bike not turning onNine times out of ten an e-bike that is completely dead has a battery problem: e…E-bike battery not chargingA battery that refuses to charge is usually a charger, a plug, or a temperature …E-bike display not workingA dark or blank display with a charged battery is nearly always a cable, connect…E-bike motor not working (no assist)When the display works but the motor does nothing, the system has decided not to…E-bike cuts out while ridingAn e-bike that cuts out mid-ride is telling you something by the timing: under l…E-bike battery drains fast / short rangeRange drops for three reasons: the way the bike is ridden, the conditions, or th…E-bike pedal assist not workingPedal assist depends on the bike knowing two things: that you are pedalling and …E-bike throttle not workingA dead throttle is usually a setting, a brake sensor, or the throttle's own conn…E-bike motor making grinding or clicking noiseMost 'motor' noises are not the motor at all: chainline, a loose chainring lockr…E-bike walk assist not workingWalk assist has a deliberately awkward activation on most systems so it cannot b…E-bike speed limited / stuck at 15 mph or 25 km/hIn the EU, UK, and Australia pedal assist legally stops at 25 km/h (15.5 mph); i…E-bike shows wrong battery percentageThe battery gauge is an estimate based on voltage, temperature, and the pack's s…E-bike lights not workingLights powered from the e-bike system fail at the connector far more often than …E-bike won't charge to 100%A pack that stops short of 100 percent is either doing it on purpose (a charge l…E-bike battery swollen or hotA swollen, unusually hot, or chemical-smelling lithium battery is a safety issue…E-bike charger light stays red / greenCharger LEDs are simple: usually red or orange for charging, green for done or i…E-bike not working after water / rainE-bikes are rain-proof but not pressure-washer-proof or submersion-proof, and th…E-bike stored all winter won't turn onA bike that was fine in autumn and dead in spring almost always has a battery th…E-bike error on display but no code (symbol / wrench / exclamation)Not every warning comes with a number. A wrench often means a service reminder r…E-bike brake sensor stuck (no assist after braking)Brake sensors tell the controller to cut the motor the instant you touch a lever…