I'd think the s2 is similar and might be exactly the same. I think it would be worth it to take the cartridge out and open it up to see.

sorry. dont know much besides what I wrote above. If you have more details I might be able to help. There is also a vanmoof subreddit that has been able to instruct me on how to fix a lot of the issues ive had with the bike so you might try that.

sure np I didn't think it was "difficult" either but the description of difficult said something like "requires soldering" so I put it as difficult 🤷‍♂️