Well... since my local shop sent off for two wires to fix this broken ST1 (no_Comm error) and installed them...nothing changed...so now they are ordering me a whole new motor and wheel again....this will be the third new motor since buying this e-bike. ....lucky for me its still under warranty. When my warranty runs out in Jan 2020....am selling this lemon as fast as I can before something else breaks on it....Stromers slow service and lack of reliability has turned me off for good with this brand. I wish all the best to other Stromer owners though.