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Lol ? this 504 error is is turning me to drink ?. LBS - Local bike shop ? still not heard anything on my Bike at the minute. I have contacted Bosch also on the issue.

I have found this document, some good information in it, but not what you are after.... https://issuu.com/boschebikesystems/docs/boschae_hb2020_uk/14?ff

Hi, for the 504 error I have experienced you need to have the error code cleared at your LBS. I have read that if you ride the bike for 90 mins it will clear also. I haven’t tried this. I’m not aware of another reset we can do to clear the issue.

Hi, I have had the same issue. It happened on Sw 1.0.2.0 so my LBS cleared the fault and updated me to 1.0.3.0 and I have had the bike back two weeks and the error 504 appeared again :( Only owned the bike for 6 weeks! Still awaiting feedback from Bosch them selves and also the LBS where I...

Hi, no tuning at all. Completely standard bike 6 weeks old.

You would like to think Bosch know more about it. Seems to be linked to there anti tuning SW from what I have read but the bike is standard. It’s a cube stereo hybrid 160 Sl. Very frustrating!!

Hi, I had the same error while out on a ride, I got the bike to the LBS and the cleared the fault and updated my motor. It went from SW 1.0.2.0 to 1.0.3.0. Other than the SW update that was required they could not find a problem with the bike. I had the bike back for around two weeks and the...