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Seems like a faulty battery cable. Sometimes, they are defective from the factory, but will work for a while. Then the defect worsens over time and we end up with the situation you have... intermittent issues. Other times, a perfectly good cable is damaged by the assembler, and the same story as...

For reference, Purion should work with dead batteries, or even without batteries. They exist in Purion only for "Turn On" and "Turn Off" signals to the drive unit, so you have to turn on/off using Powerpack. Not an ideal way to operate the eBike, but should help with troubleshooting, and/or...

You're welcome! A few things to keep in mind... - Likely will not be a chainring/chainstay clearance issue, assuming it's the same exact frame. - Chain will likely need to be longer because chains are sized based on exact drivetrain components, etc. - The model that comes stock with a 46T will...

I understand, and I'd feel the same way in this situation if it were me. I'll wait for the info, and we will get this figured out.

OEMs calculate and program the wheel circumference for their eBikes. They all seem to use a slightly different method to calculate this value before programming. Some use a theoretical size, some use a general, average-weighted roll-out, and others use a very complex formula that we are not...

Your video shows the Purion with no speed displayed. Until you see a "0.0," the system is not "booted," and will not function. This usually means a physical disruption in the CAN connection (damaged wire, corroded contacts, etc.) Most common causes are a faulty battery cable, corrosion on...

If you are willing, please get your case number from the shop (the number they got when they contacted Bosch Service) and send it to me via PM. I can use this to look at your case in our records and see what's going on. It would also help if you could send me a copy of the Diagnostic Report for...

Hello! Officially, anytime you change gearing on the Bosch System, the OEM needs to approve it and remotely adjust the gear ratio values programmed in the drive unit. Generally, when you go down in size, this doesn't really seem to be an issue. When you go to a larger gear though, the DU may...

I'm sorry to hear you are still having this issue. I recommend finding a different shop. The shop needs to contact Cannondale, who will in turn work with the shop to resolve your issue. If your eBike is cutting out that far below the legal limit, there is likely an issue with the programmed...

I've got some more info on this, based on conversations today. Nothing written in stone from Bosch, but I get the strong impression this is more about designing the product to work a certain way, rather than a reluctance to make regional adjustments. I've put in a documented request for...

Unfortunately, Nyon has been delayed by the global chip shortage caused by COVID. There are likely some other smaller factors too, but I think this is the biggest one. I don't know the exact details, but I do know it is affecting many industries that rely on SMDs for their products. My...

I'll dig deeper on this and get back to you. I'm curious too, as my Nyon was doing something similar the other day.

You make a great point. It may be that Bosch elects to do it globaly for safety reasons, etc. but I'm not sure. I will ask some questions, and hopefully come back to you with a better answer.

Same here! I have an obnoxiously bright, battery powered blinky light that I use during the day for maximum visibility. So much more visible than a steady light. For non-eShift models, the reserve can be completely eliminated if your dealer selects "Disabled" for light status in the Diagnostic...

Great idea! As far as I've heard, the focus has been on designing our on-board computers to accept/display incoming sensor info, rather than broadcast it. That being said, it would be cool if it had the option to do both. I have no idea what would be involved in making that happen since I'm not...

Hi Steve, If you'd like, please PM me details, and I can look into this case for you. Not sure where the hold-up is (Bosch or otherwise), but this is a long time to wait (assuming it's not just a parts delay.) I'll do what I can to get this moving.

Ouch! I'm sorry to hear about your accident, that sounds rough. You've probably already thought of this, but I'd recommend a comprehensive inspection/safety check be performed by the shop. I've never before seen a crank arm bent like that, and I have to think that some other components were...

Great feedback, thank you for sharing! I'll pass this along. :)

For the Gen4 CX drive unit: Tour mode is 140% on top of rider input, Sport mode is 240%, and Turbo is 340%. eMTB mode replaces Sport, and automatically varies, based on rider input, anywhere between 140% and 340%. Steeper hills do require more energy expenditure to climb, but higher cadence...

Riding at a higher (ideal) cadence of 75 rpm, on pavement, and in Turbo can definitely cause some stuttering, or "pulsing on/off" of assistance as it may be hard to maintain the requisite 30 or 40 Nm (I forget which it is) of rider torque input at all times. Try the same thing in a lower...