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  1. M

    Bosch Error 504 With Speedbox 2

    Anyone had the 3 strikes and had to go to dealer yet? I dread having to go to my closest dealer as it takes at least a week with the bike in the shop before they even consider looking at it...
  2. M

    Bosch Error 504 With Speedbox 2

    Yeah was gonna try the same thing. Maybe 100 with box on then 50 off or something. Its a right ballache if it happens again when im miles away from home though!
  3. M

    Bosch Error 504 With Speedbox 2

    Hi all I've just had the same issue. I'm running a bosch active on a gazelle cityzen that was originally purchased in 2017 with a badass box added not long after. Motor was changed for the 2nd time 2 weeks ago under warranty. 150 miles in and error 504 pops up. A slow 10 miles later in limp...
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