Bosch ZEMO SU-E FS 12 Translation Of Original Operating Instructions page 210

9.1.9 Problems with hub gear
Symptom Cause
A noise is heard when the
All gear speeds except 1.
pedals are turning.
A noise is heard when the
pedelec is pushed All gear speeds except 1.
backwards.
Noises and vibrations
All gear speeds.
occur on switching on.
Gear shifting feels
different, depending on All gear speeds.
the gear speed.
A noise is heard
whenever the rider isn't All gear speeds.
pedalling while riding.
The cable has not been installed
properly.
The gears are difficult to
engage.
The gear shift unit has been set to the
override state.
Shift cable tension setting not correct.
Gears cannot be engaged
smoothly.
The gear speed cannot be
The cable was not set correctly.
changed.
When switching gears
Strange noises are
produced
When pedalling
The cable was not set correctly.
The gear speed shown on
the indicator differs from
the speed in the hub.
The internal unit has a defect.
The cone is firmly positioned.
The hub rotates with
difficultly only or does not
rotate smoothly.
The internal unit has a defect.
A rattling noise is heard The section around the cone is
when pedalling. damaged.
Free rotation is not
smooth if the rider does
not pedal.
The brakes are too
sensitive.
The brakes are not strong
enough.
The rider needs to push
the pedals too far back
before the brakes
engage.
The wheels block if the
pedelec is pushed
backwards.
Table 61: Error solution for limit stop
MY22Z01 - 12_1.0_25.07.2022
Troubleshooting, fault clearance and repair
Remedy

This is not a malfunction.

Contact specialist dealer.

Contact specialist dealer. (readjust gear shift unit)

Carefully pull the adjusting sleeve away from the shifter
housing, turning it as you do so.

Check the gear shift function after each adjustment.

Contact specialist dealer. (Reset gear shift unit; check
whether the gear speed can be changed when the wheel is
detached from the frame.)

Contact specialist dealer.

Contact specialist dealer.

Contact specialist dealer.

Contact specialist dealer.

Contact specialist dealer.

Contact specialist dealer.

Contact specialist dealer.

Contact specialist dealer.

Contact specialist dealer.

Contact specialist dealer.
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