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WARNING – braking around corners
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The ABS is a safety system that reduces the risk of the
wheels locking when braking in a straight line with no lat-
eral forces acting on the vehicle. There is an inherently
greater risk of falling over when braking around corners.
The rider is always responsible for adapting their riding
style to the situation on the road.
WARNING – ABS intervention is limited.
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In extreme riding situations, the ABS may not be able to
control the bicycle all the way through to the wheel com-
ing to a complete stop. The ABS function can be re-en-
abled for braking by briefly releasing the front-wheel
brake. Always adapt your riding style to the present envir-
onmental conditions and your personal cycling abilities.
WARNING – eBike pitchover
u
The ABS is not always able to prevent the vehicle pitching
over in extreme riding situations (e.g. when carrying a
heavy bag with a high centre of gravity or the vehicle hav-
ing a high centre of gravity, e.g. due to the saddle being
set high or variations in the road surface or steep des-
cents). Always adapt your riding style to the present en-
vironmental conditions and your personal cycling abilit-
ies.
WARNING – air in the hydraulic system
u
The air in the system means that less braking force
can be built up, especially following intervention by
the ABS, in which the brake lever also moves a little
closer to the handlebars. There is an additional risk of
crushing fingers which are not wrapped around the
brake lever and remain on the handle while braking.
Before every journey, you should therefore apply the
brake to check whether there is a clearly noticeable
centre of pressure and whether there is sufficient clear-
ance between the brake lever and the handlebar grip. The
centre of pressure should be at approximately 1/3 of the
brake lever travel. In case of doubt, set the brake lever to
the maximum possible length of travel. If air finds its way
into the brake system, please have it bled by a profes-
sional. Always adapt your riding style to the present envir-
onmental conditions and your personal cycling abilities.
WARNING – check the ABS control unit.
u
Check that the ABS control unit is fitted securely to the
fork at regular intervals. If the ABS control unit comes
loose, it may fall into the spokes and cause an accident.
CAUTION – damage to components or risk of crushing
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Take care not to trap components such as brake lines,
cable harnesses or parts of the body between the ABS
control unit and the frame. This will help prevent damage
to components and bodily injury, even in the event of the
handlebars fully locking.
NOTE – do not allow brake fluid to come into contact
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with the control unit.
When servicing the ABS, make sure that the ABS control
unit does not come into contact with brake fluid. If the
ABS control unit comes into contact with brake fluid, cor-
rect operation over the entire service life cannot be guar-
anteed. In such cases, clean the ABS control unit of the
0 275 008 3AS | (02.03.2022)
brake fluid as quickly as possible. Servicing and repairs
must only be carried out by professionals.
Privacy notice
When you connect the eBike to the Bosch Dia-
gnosticTool 3, data about the eBike ABS (e.g. braking force,
delay, etc.) is transferred to Bosch eBike Systems (Robert
Bosch GmbH) for the purposes of product improvement.
You can find more information about this on the Bosch eBike
website at www.bosch-ebike.com.
Product Description and
Specifications
Intended Use
The Bosch eBike ABS (ABS = Anti-Blocking System) helps
the rider to slow down in a more controlled and stable man-
ner, even in hard conditions. Thanks to the combination of
the front wheel ABS and the rear wheel lifting control, the
ABS makes cycling safer. During hard braking manoeuvres,
the braking pressure of the front brake is controlled and
therefore stabilises the riding situation. The ABS must not be
altered or removed.
Product features
The numbering of the components shown refers to the illus-
trations on the graphics pages at the beginning of the
manual.
Individual illustrations in these operating instructions may
differ slightly from the actual conditions depending on the
equipment of your eBike.
(1) ABS control unit
(2) Operating unit with ABS indicator light
(3) Front wheel brake lever
(4) Brake caliper
a)
(5) Wheel speed sensor
(6) Sensor disc
a) The attachment position may vary depending on the wheel man-
ufacturer.
Technical data
Bosch eBike ABS
Operating temperature
Storage temperature
Protection rating
Weight, approx.
Note: For a description of the brakes and how they function,
please refer to the instructions provided by the brake manu-
facturer.
How it works
When the front-wheel brake is operated, the ABS function
identifies critical slippage using the wheel speed sensors on
BAS3311
°C
–5 to +40
°C
+10 to +40
IPx7
g
215
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