Manual Bosch BDU450CX (page 12 of 34) (English, German, Dutch, French, Italian)

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0 275 007 XD4 | (12.02.2019) Bosch eBike Systems

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,

the lower the speed of the push assistance function (at full

power).

uThe push assistance function must only be used when

pushing the eBike. There is a risk of injury if the wheels

of the eBike are not in contact with the ground while using

the push assistance.

To activate the push assistance, briefly press the WALK

button on your on-board computer. After activation, press

the + button within 3s and keep it pressed. The eBike drive

is switched on.

Note: The push assistance cannot be activated at assistance

level OFF.

The push assistance is switched off as soon as one of the

following occurs:

– You release the + button;

– The wheels of the eBike are locked (e.g. by applying the

brakes or hitting an obstacle);

– The speed exceeds 6 km/h.

The push assistance function is subject to local regulations;

the way it works may therefore differ from the description

above, or the function may even be deactivated completely.

Switching bicycle lights on/off

On the model where the bike lights are powered by the eBike

system, the front light and taillight can be switched on and

off at the same time via the on-board computer.

Notes on cycling with the eBike

system

When does the eBike drive work?

The eBike drive assists your cycling only when you are ped-

alling. If you do not pedal, the assistance will not work. The

motor output always depends on the pedalling force you ap-

ply.

If you apply less force, you will receive less assistance than if

you apply a lot of force. This applies irrespective of the as-

sistance level.

The eBike drive automatically switches off at speeds over

25/45km/h. When the speed falls below 25/45km/h, the

drive automatically becomes available again.

An exception applies to the push assistance function, in

which the eBike can be pushed at low speed without ped-

alling. The pedals may rotate when the push assistance is in

use.

You can also use the eBike as a normal bicycle without as-

sistance at any time, either by switching off the eBike system

or by setting the assistance level to OFF. The same applies

when the battery is drained.

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 to

briefly stop pedalling when changing gear. This will facilitate

the gear change and reduce wear on the powertrain.

By selecting the correct gear, you can increase your speed

and range while applying the same amount of force.

Gaining initial experience

We recommend that you gain initial experience with the

eBike away from busy roads.

Test the various assistance levels, beginning with the lowest

level. As soon as you feel confident, you can ride your eBike

in traffic like any other bicycle.

Test the range of your eBike in different conditions before

planning longer and more demanding trips.

Influences on range

The range is affected by a number of factors, such as:

– Assistance level

– Speed

– Gear shifting behaviour

– Tyre type and tyre pressure

– Age and condition of the battery

– Route profile (gradients) and conditions (road surface)

– Headwind and ambient temperature

– Weight of eBike, rider and luggage

For this reason, it is not possible to predict the range accur-

ately before and during a trip. However, as a general rule:

– With the same assistance level on the eBike drive: The

less energy you need to exert in order to reach a certain

speed (e.g. by changing gears optimally), the less energy

the eBike drive will consume and the higher the range per

battery charge will be.

– The higher the selected assistance level under otherwise

constant conditions, the smaller the range will be.

Taking care of your eBike

Please observe the operating and storage temperatures of

the eBike components. Protect the drive unit, on-board com-

puter and battery against extreme temperatures (e.g. from

intense sunlight without adequate ventilation). Extreme tem-

peratures can cause the components (especially the battery)

to become damaged.

Have your eBike system checked by an expert at least once a

year (including mechanical parts, up-to-dateness of system

software).

Please have your eBike serviced and repaired by an author-

ised bicycle dealer.

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Bosch BDU450CX Manual

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