Can I update Bosch firmware myself?

On Smart System bikes (2022 and newer), firmware updates can be applied via the eBike Flow app without dealer involvement. On System2 bikes (pre-2022), firmware updates require the Bosch DiagnosticsTool 3.

Can I ride with error 590 active?

Not recommended on public roads. An ABS integration fault may affect braking performance in emergency situations. Seek dealer service before riding.

Bosch E-Bike Error 590: ABS Integration Fault Fix

Bosch E-Bike Error Code 590: ABS Integration Fault

Marcus Heidler March 20, 2026 5 min read @MarcusHeidlerEbike

What Error 590 Means

Error 590 indicates a fault in the ABS (Anti-lock Braking System) integration. Some premium Bosch-equipped bikes include the Bosch eBike ABS system, which integrates with the drive unit to coordinate brake modulation and motor assistance during braking events. Error 590 is raised when the drive unit loses communication with the ABS module or detects a fault in the ABS integration path.

Safety-critical system: ABS integration faults can affect braking performance. Have the system inspected by a Bosch-certified dealer before riding on public roads.

Recommended Actions

Step 1: Do Not Attempt Self-Repair

The ABS integration involves safety-critical brake circuits. Self-diagnosis beyond visual inspection of connectors is not recommended.

Step 2: Check ABS Connector

Visually inspect the ABS module connector for obvious damage, loose connections, or water ingress. If visibly damaged, do not ride the bike.

Step 3: Dealer Inspection

Take the bike to a Bosch-certified dealer for ABS system diagnosis. The dealer will check ABS module function, sensor wheel integrity, and integration firmware compatibility.

Marcus Heidler @MarcusHeidlerEbike

Bosch eBike Systems Specialist

Former Bosch eBike technician with 11 years of field experience. Certified in Performance Line CX diagnostics and Smart System integration.

Frequently Asked Questions

: On Smart System bikes (2022 and newer), firmware updates can be applied via the eBike Flow app without dealer involvement. On System2 bikes (pre-2022), firmware updates require the Bosch DiagnosticsTool 3.
: Not recommended on public roads. An ABS integration fault may affect braking performance in emergency situations. Seek dealer service before riding.