בן דונם עשוי לזכור bosch ebike error 503 כישלון יתרון כך
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
How to fix bosch 503 error code - Cycle Maintenance Academy