Bosch Intuvia BUI251 Notice D'utilisation D'origine page 8

English – 2​
To remove the on-board computer (3), press the locking
mechanism (14) and slide the on-board computer forwards
out of the holder (4).
Remove the on-board computer when you park the
u
eBike.
The on-board computer can be secured in place to prevent it
from being removed from the holder. To do so, remove the
holder (4) from the handlebars. Put the on-board computer
in the holder. Screw the locking screw (15) (M3 thread,
8 mm long) from below into the thread provided in the
holder. Mount the holder back onto the handlebars.
Please note: The locking screw is not designed to prevent
theft.
Operation
Prerequisites
The eBike system can only be activated when the following
requirements are met:
– A sufficiently charged battery is inserted (see battery op-
erating instructions).
– The on-board computer is properly inserted in the holder
(see "Fitting and removing the on-board computer
(see figure A)", page English – 1).
– The speed sensor is connected properly (see drive unit
operating instructions).
Switching the eBike system on/off
The following options are available for switching on the
eBike system:
– If the on-board computer is already switched on when you
insert it into the holder, the eBike system will be activated
automatically.
– Once the on-board computer and the eBike battery are
fitted, briefly press the on/off button on the on-board
computer.
– With the on-board computer inserted, push the on/off
button on the eBike battery (bicycle manufacturer-spe-
cific solutions are possible when there is no access to the
battery on/off button; see the battery operating instruc-
tions).
The drive is activated as soon as you start pedalling (except
if you are using the push-assistance function or if the assist-
ance level is set to OFF). The motor output depends on the
settings of the assistance level on the on-board computer.
As soon as you stop pedalling when in normal operation, or
as soon as you have reached a speed of 25/45 km/h, the
eBike drive switches off the assistance. The drive is automat-
ically reactivated as soon you start pedalling again and the
speed is below 25/45 km/h.
The following options are available for switching off the
eBike system:
– Press the on/off button of the on-board computer.
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– Switch off the eBike battery using its on/off button (bi-
cycle manufacturer-specific solutions are possible when
there is no access to the battery on/off button; see the bi-
cycle manufacturer operating instructions).
– Remove the on-board computer from its holder.
If no power is drawn from the eBike drive for about
10 minutes (e.g. because the eBike is not moving) and no
button is pressed on the on-board computer or the operating
unit of the eBike, the eBike system, and therefore also the
battery, will switch off automatically to save energy.
eShift (optional)
eShift is the integration of electronic gear-shifting systems
into the eBike system. The eShift components are electric-
ally connected to the drive unit by the manufacturer. The
separate operating instructions describe how to operate the
electronic gear-shifting systems.
Energy supply of the on-board computer
If the on-board computer is in the holder (4), a sufficiently
charged battery is inserted in the eBike and the eBike sys-
tem is switched on, then the on-board computer is powered
by the battery of the eBike.
If the on-board computer is removed from the holder (4),
the energy is supplied via an internal battery. If the internal
battery is weak when the on-board computer is switched on,
<Attach to bike> will appear on the text indicator (d) for
3 s. The on-board computer will then turn off again.
To charge the internal battery, put the on-board computer
back in the holder (4) (when a battery is inserted in the
eBike). Switch the eBike battery on by its on/off button (see
battery operating instructions).
You can also charge the on-board computer via the USB
port. To do this, open the protective cap (8). Connect the
USB port (7) of the on-board computer via a suitable USB
cable to a standard USB charger or the USB port of a com-
puter (5 V charging voltage, max. 500 mA charging current).
<USB connected> will appear on the text indicator (d) of
the on-board computer.
Switching on/shutting down the on-board
computer
To switch on the on-board computer, briefly press the on/
off button (5). The on-board computer can also be switched
on when it is not inserted in the holder (if the internal battery
is sufficiently charged).
To switch off the on-board computer, press the on/off but-
ton (5).
If the on-board computer is not inserted in the holder, it
automatically switches off after 1 minute to save energy if no
button is pressed.
If you are not going to be using your eBike for several
u
weeks, remove the on-board computer from its
holder. Store the on-board computer in a dry environ-
ment at room temperature. Regularly recharge the on-
board computer's battery (at least every 3 months).
Bosch eBike Systems
Battery charge indicator
The battery charge indicator (i) displays the state of charge
of the eBike battery, not that of the on-board computer's in-
ternal battery. The state of charge of the eBike battery can
also be checked on the LEDs of the battery itself.
Each bar of the battery symbol on the indicator (i) repres-
ents approximately 20 % of the capacity:
The eBike battery pack is fully charged.
The eBike battery pack should be recharged.
The LEDs of the battery charge indicator on the
battery go out. The capacity for assisting the
drive has been used up, and assistance is
gently switched off. The remaining capacity is
made available for the lighting and the on-
board computer. The indicator flashes. The ca-
pacity of the eBike battery is enough for about
two hours of lighting. This does not account for
other consumers (e.g. automatic gearbox, char-
ging external devices at the USB port).
If the on-board computer is removed from the holder (4),
the last displayed state of charge of the battery is saved. If
an eBike is powered by two batteries, the battery charge in-
dicator (i) displays the state of charge of both batteries.
If an eBike has two batteries inserted into
OFF
it and both batteries are charged on the
MPH
KM/H
bike, the charging progress of both bat-
teries will be indicated on the display
(the left-hand battery pack is being
charged in the illustration). You can also
tell by the flashing indicator on the bat-
tery which of the two batteries is being
charged.
Setting the assistance level
On the operating unit (9), you can set the level of assistance
you want the eBike drive to provide you with while pedalling.
The assistance level can be changed at any time, even while
cycling.
Note: In some models, the assistance level may be preset
and cannot be changed. There may also be fewer assistance
levels available than stated here.
The following assistance levels are available as a maximum:
– OFF: Motor assistance is switched off. The eBike can just
be moved by pedalling, as with a normal bicycle. The
push assistance cannot be activated at this assistance
level.
– ECO: Effective assistance with maximum efficiency, for
maximum range
– TOUR: Steady assistance, long range for touring
Bosch eBike Systems
English – ​ 3
– SPORT/eMTB:
SPORT: Powerful assistance, for mountain biking and
cycling in urban traffic
eMTB: Optimum assistance whatever the terrain, rapid
acceleration when starting from a standstill, improved dy-
namics and top performance (eMTB only available in
combination with the drive units BDU250P CX, BDU365,
BDU450 CX and BDU480 CX. A software update may be
required.)
– TURBO: Maximum assistance even at high pedalling
speeds, for sport cycling
To increase the assistance level, press the + button (12) on
the operating unit repeatedly until the required assistance
level appears on indicator (b). To decrease the assistance
level, press the – button (11).
The requested motor output is displayed in the indicator (a).
The maximum motor output depends on the selected assist-
ance level.
When the on-board computer is removed from the holder
(4), the assistance level that was last displayed is saved; the
motor output indicator (a) remains empty.
Interaction between the eBike system and gear-
shifting
The gear-shifting should be used with an eBike drive in the
same way as with a normal bicycle (observe the operating in-
structions of your eBike on this point).
Irrespective of the type of gear-shifting, it is advisable that
you briefly stop pedalling when changing gear. This will aid
the gear change and reduces wear on the powertrain.
By selecting the correct gear, you can increase your speed
and range while applying the same amount of force.
For this reason, follow the gear change recommendations
provided by the indicators (g) and (h) on your display. If in-
dicator (g) is displayed, you should change to a higher gear
with lower cadence. If indicator (h) is displayed, you should
select a lower gear with higher cadence.
Switching bike lights on/off
In the model in which the lighting is powered by the eBike
system, the front and rear lights can be switched on and off
at the same time via the on-board computer with button (2).
When the lighting is switched on, <Lights on> appears and
when the lighting is switched off, <Lights off> appears for
approx. 1 s on the text indicator (d). The lighting symbol (c)
is displayed when the light is on.
The on-board computer saves the light status and activates
this saved status accordingly after a restart.
Switching the bike light on and off has no effect on the back
lighting of the display.
Switching the push assistance on/off
The push assistance aids you when pushing your eBike. The
speed in this function depends on the selected gear and can
reach a maximum of 6 km/h. The lower the selected gear,
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