“Error 640” Bosch Ebike — Symptoms, Causes & Fixes
Table of Contents Toggle TL;DR What this code means (Bosch official intent) Quick fixes (safe DIY first) 1) Proper restart (the Bosch way) 2) 60-second check 3) If it started after rain / washing Most common causes When to stop DIY and go to a Bosch dealer Related guides on this site (closed-loop) Notes (practical)…
