Fehlercode 503 Bosch E-Bike - E-Bike unterstützt nicht - YouTube
Error on ebike bosch drive unit dont worry read this and solve any pr
Die häufigsten E-Bike-Probleme | Lucky Bike-Blog
503 Error,how can i fix this? The battery works just fine,and for a moment,the battery would work after 25 km/h,i was with 30 km/h and the battery was working,i didnt upgraded the