Bosch ZEMO SU-E FS 12 Translation Of Original Operating Instructions page 202

9.1.3 Assistance function errors
Symptom Cause/possible source
Is the battery charged sufficiently?
Riding up long inclines in summer
weather or riding with a heavy load for
a long time. The battery may be too
hot.
Assistance is not
available.
The rechargeable battery, the on-
board computer or the assistance
switch may be connected incorrectly,
or one or more of them may have a
problem.
Is the speed too high?
Are the pedals being pushed?
Assistance is not
Is the level of assistance set to [OFF]?
available.
Is the system switched on?
The journey distance can be shorter
depending on the road conditions, the
gear level and the total usage time.
The battery does not perform as well in
winter weather.
The assisted journey
The battery is a consumable.
distance is too short.
Repeated charging and long periods of
use cause the battery to degrade (loss
of power).
Is the battery fully charged?
Are the tyres pumped to an adequate
pressure?
Is the level of assistance set to OFF?
It is difficult to pedal.
The battery charge might be low.
Have you switched on the system with
your foot on the pedal?
Table 56: Level of assistance error solution
MY22Z01 - 12_1.0_25.07.2022
Troubleshooting, fault clearance and repair
Remedy
1 Check battery is charged.
2 Recharge the battery if it is almost flat.
1 Switch off the drive system.
2 Wait a moment and then check again.
 Contact specialist dealer.
 Check on-board computer indicators. The electronic gear
assistance only works up to a maximum speed of 25 km/h.
 The pedelec is not a motorbike. Push the pedals.
1 Set the level of assistance to a different level of assistance
than [OFF].
2 Contact your specialist dealer if you still feel that the no
assistance is being supplied.
 Press the battery on-off button to switch it on again.
1 Check battery is charged.
2 Recharge the battery if it is almost flat.
This does not indicate a problem.
 If the distance you can cover with one single charge is very
short, replace the battery with a new one.
 If the distance covered with a fully charged battery has
become shorter, the battery may be affected. Replace the
battery with a new one.
 Pump up tyres.
1 Set level of assistance to [BOOST].
2 Contact your specialist dealer if you still feel that the no
assistance is being supplied.
 Check how powerful assistance is again after charging the
battery. If there is still no assistance, contact your specialist
dealer.
1 Switch system on again without applying pressure to the
pedal. If assistance is still not supplied, contact your
specialist dealer.
201