Shimano SM-EW90-A manual

Shimano SM-EW90-A
7.6 · 1
PDF manual
 · 1 page
manualShimano SM-EW90-A

Junction [A]


Contact the place of purchase or a distributor for information on
installation, adjustment, and replacement of the products which are not
found in the user's manual. A dealer's manual for professional and
experienced bicycle mechanics is available on our website (https://si.
The Bluetooth
word mark and logos are registered trademarks owned
by the Bluetooth SIG, Inc. and any use of such marks by SHIMANO INC.
is under license. Other trademarks and trade names are those of their
respective owners.
For safety, be sure to read this “user's manual”
thoroughly before use, follow it for correct use, and
store it so that it can be referenced at any time.
The following instructions must be observed at all times in order to
prevent personal injury and physical damage to equipment and
surroundings. The instructions are classified according to the degree of
danger or damage which may occur if the product is used incorrectly.


Failure to follow the instructions will result
in death or serious injury.


Failure to follow the instructions could
result in death or serious injury.


Failure to follow the instructions could
cause personal injury or physical damage
to equipment and surroundings.

Important safety information


Do not disassemble or modify the product. This may cause the product
to not operate correctly, and you may suddenly fall and be seriously
When operating the shifting switch, be careful not to allow your
fingers to be caught in the derailleur. The powerful motor which
drives the electronic gear shifting derailleur will operate
without stopping until the shifting position is reached.


Be sure to attach dummy plugs to any unused E-TUBE ports.
Do not keep connecting and disconnecting the small waterproof
connector. It may impair the function.
Be careful not to get water into the E-TUBE ports.
The components are designed to be fully waterproofed to withstand
wet weather riding conditions; however, do not deliberately place them
into water.
Do not clean the bicycle with a high-pressure washer. If water gets into
any of the components, operating problems or rusting may result.
Handle the components carefully, and avoid subjecting them to strong
Do not use the thinners or harsh solvents to clean the products. Such
solvents may damage the surface.
Contact the place of purchase for updates of the component software.
The most up-to-date information is available on the SHIMANO website.
Products are not guaranteed against natural wear and deterioration
from normal use and aging.
For maximum performance we highly recommend SHIMANO lubricants
and maintenance products.
This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may
cause undesired operation.

Regular inspections before riding the bicycle

Before riding the bicycle, check the following items. If any problems are
found, consult your place of purchase or a distributor.
Is junction [A] fully secured?
Is there sufficient charge remaining in the battery?
Is there any noticeable damage to the electric wires?

Names of parts

LED window for button
LED window for remaining battery display
Junction [A] E-TUBE port

Connection method

LE connection
The firmware versions for Bluetooth
LE connection-compatible devices
are shown below.
BM-DN100 and BT-DN110: Ver. 4.2.3 or later
EW-WU111 and EW-WU101: Ver. 4.1.1 or later
Before setting up a connection, turn on Bluetooth LE on the smartphone/
1. Start E-TUBE PROJECT and set it to listen for Bluetooth LE signals.
2. Press the junction [A] button until the green LED and red LED start
blinking alternately. The bicycle side is ready to connect. The unit
name is displayed on the E-TUBE PROJECT screen.
* Release the mode switch or button as soon as the bicycle side is ready
to be connected. If the mode switch or button is held down for any
longer, a different mode will be activated.
3. Select the unit name displayed on screen.
* When disconnecting, cancel the Bluetooth LE connection from the
smartphone/tablet. (The bicycle will switch from the connection mode
to the normal operation mode.)

How to operate

Switching operation modes
Operation differs depending on the combined unit.
0.5 seconds
or more
3 seconds or
Hold down
External type: SM-BMR1, SM-BMR2, built-in type: SM-BTR2
RD protection reset mode
Adjustment mode
Shift mode
To end adjustment mode or RD protection reset mode, press for 0.5
seconds or more.
For the setting procedure, contact your place of purchase or a distributor.
0.5 seconds
or more
2 seconds or
Hold down
External type: BM-DN100, built-in type: BT-DN110
Adjustment mode
5 seconds or
RD protection reset mode
Bluetooth LE connection mode
Shift mode
To end adjustment mode or RD protection reset mode, press for 0.5
seconds or more.
For the setting procedure, contact your place of purchase or a distributor.
Selecting / confirming the shift mode
Double click the button to switch the shift mode.
The LED changes as shown in the figure below each time the shift mode
switches. To confirm the current shift mode, continue to hold a shifting
switch connected to junction [A] for 0.5 seconds or more. After the
junction [A] LED window displays the battery level, the LED window will
show the current shift mode, as shown in the figure below.
LED display when selecting / confirming shift mode
Manual shift
Shift mode 1
Shift mode 2
Green (2 seconds)Remaining battery
display LED:
Red (2 seconds)Button LED:
Flashing green (twice)Remaining battery
display LED:
Flashing red (twice)Button LED:
Flashing green (3 times)Remaining battery
display LED:
Flashing red (3 times)Button LED:
About the RD protection function
* Rotate the front chainwheel while restoring operation after the RD
protection function has activated.
In order to protect the system when the bicycle falls and is subjected to a
strong impact, the RD protection function will activate and momentarily
sever the connection between the motor and the link, impairing the
proper function of the rear derailleur. When this happens, hold the
junction [A] button down for 5 seconds or more. This will restore the
connection between the motor and the link, and clear the RD protection
function for the rear derailleur. When recovery cannot be performed via
button operations, it may be possible by hand. Check with the place of
purchase in advance.
Press and hold
Red Flashing red RD protection
Button (push)
Requires approximately 5 seconds
When the button LED is lit red, the rear derailleur will not shift. Press the
button until the button LED turns off.
Checking the battery level display
Press and hold a shifting switch connected to junction [A] for 0.5 seconds
or more. The LED window for showing the remaining battery display will
illuminate according to the figure below. After that, the current shift
mode is displayed.
100% 25%
Green (2 seconds)
Flashing green
(5 times)
Red (2 seconds)
Flashing red
(5 times)
* When the battery level is low, the front derailleur stops operating
first, then the rear derailleur. When the battery is completely drained,
the derailleurs are fixed at the last gear position. It is recommended
to charge the battery as soon as possible when the battery indicator
lights red.

User's Manual

Please note: specifications are subject to change for improvement without notice. (English)
© Jan. 2021 by SHIMANO INC. ITP
One Holland, Irvine, California 92618, U.S.A. Phone: +1-949-951-5003
High Tech Campus 92, 5656 AG Eindhoven, The Netherlands Phone: +31-402-612222
Roebuck Way, Knowlhill, Milton Keynes, Buckinghamshire, MK5 8HL, United Kingdom
3-77 Oimatsu-cho, Sakai-ku, Sakai City, Osaka 590-8577, Japan

View the manual for the Shimano SM-EW90-A here, for free. This manual comes under the category not categorized and has been rated by 1 people with an average of a 7.6. This manual is available in the following languages: English. Do you have a question about the Shimano SM-EW90-A or do you need help? Ask your question here

Need help?

Do you have a question about the Shimano and the answer is not in the manual? Ask your question here. Provide a clear and comprehensive description of the problem and your question. The better your problem and question is described, the easier it is for other Shimano owners to provide you with a good answer.

Pascal Maurin • 15-5-2023No comments

Bonjour, lors d'une mise à jour des micrologiciels, mon SM-EW90-A n'est plus reconnu. Une restauration s'avère impossible. Tous les autres périphériques fonctionnent normalement avec une autre unité SM-EW90-A. Que faire ? Merci.

Answer this question

Number of questions: 1

not categorized
User manual (PDF)

Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Shimano SM-EW90-A below.

How do I install the Shimano SM-EW90-A?

Start by locating the appropriate position along the bike frame for the junction box and secure it using the provided mounting hardware. Then, connect the wires properly, ensuring that each connector matches the corresponding port on the junction box. Finally, neatly route the wires along the frame, avoiding any sharp edges or potential damage.

How can I reset the settings of the Shimano SM-EW90-A?

To reset the settings, disconnect the battery, wait for a few seconds, and then reconnect it. This will restore the default settings of the Shimano SM-EW90-A.

What should I do if the Shimano SM-EW90-A seems unresponsive or displays errors?

First, check if the battery is properly connected and charged. Then, ensure that all wires are securely connected and undamaged. If the issue persists, disconnect and reconnect all the wires, making sure they are correctly aligned. If errors still occur, contact a professional bike mechanic for further assistance.

How can I adjust the shifting behavior of the Shimano SM-EW90-A?

The Shimano SM-EW90-A offers customization options for shifting behavior. Using the compatible software or app, access the settings menu and make adjustments to suit your preferences. Experiment with factors such as shifting speed, multi-shift options, and the number of gears shifted per action. Remember, subtle changes in these settings can significantly impact your riding experience, so take some time to find the perfect settings for your style.

Can I use non-Shimano components with the Shimano SM-EW90-A?

While the Shimano SM-EW90-A is designed to work seamlessly with Shimano components, it may be compatible with certain non-Shimano parts. However, it is always recommended to consult the manufacturer's compatibility charts or reach out to the Shimano customer support for confirmation. Using non-compatible components may result in reduced performance, compatibility issues, or potential damage to the system.

Is the manual of the Shimano SM-EW90-A available in English?

Yes, the manual of the Shimano SM-EW90-A is available in English .

Is your question not listed? Ask your question here

No results