Bosch ZEMO SU-E FS 12 Translation Of Original Operating Instructions page 246

9.1.11 Problems with back-pedal brake
Symptom Cause
Brake is too sensitive.
Brake is too weak.
The rider needs to push
the pedals too far back
before the brakes
engage.
The wheels block if the
pedelec is pushed
backwards.
Unusual noises when
braking
Rotation feels stiff during
free rotation.
Table 68: Error solution for back-pedal brake
MY22Z0a - 12_1.0_25.07.2022
Troubleshooting, fault clearance and repair
Remedy
1 Contact specialist dealer. Lubricate brake hub.
2 Replace brake shoe unit.
1 Contact specialist dealer. Replace brake shoe unit.
2 If the problem should persist, replace the internal hub unit.
1 Contact specialist dealer. Replace brake shoe unit.
2 If the problem should persist, replace the internal hub unit.

Contact specialist dealer. Replace internal hub unit.
1 Contact specialist dealer. Lubricate brake hub.
2 Replace brake shoe unit.

Contact specialist dealer. Replace brake shoe unit.
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