I bought a Grizl:ON CF 9, AMA

[Rás Cnoic]

Grizl CF9 battery overheated and shut off bike. Bike sat for 1 month and it never had this problem before. Took it to REI they seemed less than enthusiastic about it. REI is more mechanical repair and less electrical. The have not figured out the cause yet. Has anyone here had overheating battery issue with the Bosch Performance Line SX Sprint and the 400wh battery?

It's a Canyon, why not contact Canyon direct? Is it still in the 2 year warranty period?

Surely that's the first step with any bike fault, inform the bike company?

Even if it's now out of warranty worth contacting them as they may do a goodwill repair/swap of battery or offer discounted replacement cost. It may be a common issue they are well aware of. And after the Spectral ON EMTB faulty battery recall mess, Canyon will know all about battery faults as it nearly bankrupted the company last year, such a major recall.