Symptoms
- The bike will not turn on or switches off while riding.
- The bike turns on by itself or will not switch off.
- The motor jerks, assistance cuts in and out.
- An error code appears on the display.
- The display is blank, fogged up or does not respond to buttons.
How we do it
We do not repair controllers and displays at component level — we replace them with working parts matched to your bike: voltage, connectors and display protocol.
Before replacing anything, we check the whole circuit with a multimeter: battery, cables, connectors, controller and display. Often the culprit is a cheap cable or a flooded connector, not an expensive controller.
What not to do yourself
Do not swap a controller or display from one bike to another “to test it”. A faulty controller can damage the second bike’s display and cable — and instead of one fault you have two. We know this from practice.
Common questions
What does the error code on my display mean?
Codes differ between controller makers, so the same number on two bikes can mean different things. Send us the bike model and a photo of the display — we will tell you where to start.
Will I get an original part?
We pick a part compatible with your bike. If the original is available — the original; if not — an equivalent with the same specs. We tell you what we fit before we fit it.