Brose error 44: Motor Has Overheated
The motor's internal temperature sensor has registered a value above the safe operating limit, usually after sustained high load. The drive unit reduces assistance power and may shut it off completely until temperatures fall. You will feel weaker acceleration and the assist level dropping even when you are pedalling hard.
| Drive system | Brose Drive (S, T, C - also used by Bulls, Rotwild, Fantic, BH, Trek Allant) |
| Severity | Warning |
| Keep riding? | Ride with caution |
| Typical cost | Dealer diagnostic fees run €40–€80, a motor temperature sensor replacement €120–€220, and a full motor rebuild €450–€750. |
Likely causes
- Prolonged climbing on a high assist level in a low gear
- Heavy cargo or trailer load on steep terrain in warm weather
- Mud or debris packed around the motor housing and frame vents
- Worn drivetrain or bottom bracket forcing excess torque through the motor
- Faulty temperature sensor reporting a falsely high reading
How to fix Brose error 44
- Stop the ride and let the motor cool for 10 to 15 minutes in shade.
- Drop the assist level to ECO or OFF for the rest of the trip.
- Pedal at a higher cadence with less force to lower motor load.
- Clean any mud or debris from the motor housing and ventilation slots.
- Switch the display off and back on after the cool-down to clear the code.
- If 44 reappears within the same ride, end the trip and book a dealer service.
Warranty: A genuine overheating fault traced to a defective motor or temperature sensor within the two-year warranty period is normally covered, while damage from water ingress, crashes, or sustained overload is typically excluded.
Typical cost: Dealer diagnostic fees run €40–€80, a motor temperature sensor replacement €120–€220, and a full motor rebuild €450–€750.
Frequently asked
Can I reset brose error 44?
You can switch the display off and on after a 10 to 15 minute cool-down and the code will clear, but it will return if the motor is still hot or if the temperature sensor itself is faulty.
Is it safe to keep riding with this error showing?
It is not dangerous in normal use, but you should drop to the lowest assist level, pedal gently, and end the ride promptly if the warning reappears once the motor has cooled.
How much will the repair cost under warranty?
If Brose covers the failure within two years, the dealer labour and parts are paid by the manufacturer; out of warranty, expect €120–€220 for a sensor or €450–€750 for a motor rebuild.
Related Brose codes
Manuals and video
Official source: Brose error code table, Pedego dealer service guide
Not an official Brose document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.