Installation tuning chip for Sachs-RS eBike engines

1. Please turn off the bike and remove the battery from the frame. Then remove the cover shown on the motor by loosening the 3 screws. Below you will find various connectors to the motor.

2. It is best to unplug all connectors on the motor to give yourself some space for the next steps. The plugs are coded and cannot be plugged back in incorrectly later. But you can also take a picture to remember the position.

3. Detach the lower battery bracket by removing the 4 screws shown. Please note that the mount is connected with cables. Avoid pulling on these.

4. Thread a pull wire or cable tie under the motor. Start behind the battery bracket you just removed. The goal of the pull wire is to open the cover removed in step 1.

5. Tie the included 1m cable to the pull wire. It is advisable to first pull a loop of this cable under the motor. (see next step). The black 4-pin connector goes into the battery bay, leaving the end with the two 3-pin connectors out of the opening in step 1.

6. Once you have looped the cable through under the motor, carefully pull the end with the 4-pin connector up. The 4-pin connector must then be in the battery compartment, and the two 3-pin connectors through the opening from step 1. Please pull gently to avoid tearing off the connector. If something sticks, break it off and try to move the other cables out of the way, then start over. If you can't get the connector under the engine, loosening the front engine mounting bolts on some frames may help. Then the engine can be easily folded up to create a little more space.

7. Now connect the 3-pin connector of the retracted cable to the connector of the speed sensor. Please plug the other 3-pin connector of the pulled-in cable into the connection on the motor to which the speed sensor was previously connected:

The plugs are coded. Please do not use force when plugging in. If something is difficult, please check whether you are using the correct slot and whether the plug is inserted in the right direction.

8. Pull the approx. 1m long cable into the battery compartment. This must reach up to the upper battery holder. Then plug all other connectors that were disconnected in step 2 back into the motor. Use the slots from which you previously removed the connectors. The same applies here: The plugs are coded and can only be plugged into the correct slot. Then stow all cables in the opening and close the cover removed in step 1. Screw it back on with the 3 screws. Continue to screw the lower battery holder from step 3 back on.

9. Now remove the upper battery bracket by first removing the 4 screws shown and then removing the bracket.

10. Now guide the cable threaded in steps 4 to 8 up through the battery compartment. Make sure the cable is out of the way when inserting the battery. If necessary, you can use cable ties to fix the cable.

11. You can now connect the 4-pin connector of the cable that has been pulled in to the corresponding counterpart on the module. Here, too, the plugs are coded and can only be plugged together the right way around.

12. Next, remove the grommet that routes the cable to the display into the frame.

13. Disconnect the black, round connector to the display. The end that comes out of the frame through the cable guide you just removed can be slid back into the frame. Then, inside the frame, connect the two round black connectors on the module to the connectors you just disconnected on the display. The best way to do this is to first connect the cable pushed back into the frame and then guide the other connector on the module through the opening of the cable bushing to the outside and connect it to the connector on the display.

Important: If you have installed a Sigma Remote 500 together with a Sigma View 1200 display on your bike, the display and the remote are connected to the motor via a Y-cable. The module must then be connected between the motor and this Y-cable, not between the display and the remote!

Then screw the cable bushing removed in step 12 back into place. Stow the tuning in the upper area of the frame and screw the upper battery holder removed in step 9 back into place.


To switch the support on or off above 25km/h, please change the support level down one level, up, down and up again (- + - +). If successful, you will see the animation of the battery capacity display as when you switch on your Pedelec, which provides information about the current status. The animation can only be seen on the control unit, not on the display!

An example, starting at level 3:

Button down (new level: 2)

button up (new level: 3)

button down (new level: 2)

button up (new level: 3)

The tuning shows a short animation over the capacity display of the battery. If the capacity runs from empty to full, your pedelec also supports you with motor power when you drive faster than 25 km/h. If the display runs from full to empty, the motor support ends at 25 km/h.