it seems that Bosch torque sensor is based on variable reluctance. Have you tried to magnetically shield around the area where the torque sensor is located?

Edited May 13, 20232 yr by Woosh

Hi,

After 4 years my CX Gen 4 bike is suddenly throwing up 510 errors which won’t clear even with Bosch battery removal & re- alignment of spoke magnet.

Sometimes the bike will assist for 15 seconds sometimes not at all. If I ride with no assist, sometimes it will cut in for a few seconds.

I also got the Purion message “Display Battery Charge”. On advice, I checked the Bosch battery terminals were clean.

Online forums say this is an Electro Magnetic Sensor issue caused by outside magnetism which was corrected in the May 2021 Firmware update.

 

I didn't get this update.

 

My question is 'why would the issue wait until now to crop up'?