Bosch Smart System · Connectivity module · Error
Bosch Smart System error code 90500A
The ConnectModule’s built-in battery isn’t working properly
What you can check
Leave the bike switched on for at least 45 minutes at 15–35 °C so the module’s battery charges. If it switches off, switch it back on.
Dealer if the fault comes back
Trolda reads live data from Bosch Smart System bikes. What Trolda shows on your bike
Same part: Connectivity module
Sources
- Bosch eBike Help Center – én side per feilkode (2026-10-04)
Explained in Trolda's own words from the manufacturer's public documentation. Trolda is not affiliated with the manufacturer. If in doubt, ask your dealer.
Trolda for your e-bike
Trolda connects to your Bosch Smart System bike and shows what you did, what the motor did, and what it cost the battery.
Get TroldaTrolda is in open testing on iPhone and Android. You get the app through our tester page, it takes a minute.