Bosch Smart System Tuning License Code (BES3)

Digital Software Tuning via USB-C – without chip and without motor removal

With the digital tuning license code, you can conveniently adjust the speed limit of your Bosch Smart System e-bike from home. Neither the motor needs to be opened nor a tuning chip or additional module installed.

For activation, you only need a suitable USB-C data cable and a Windows PC, laptop, or a compatible Android smartphone. Installation is carried out via the web tool at:

👉 https://1dragon.de

Activation usually takes only a few minutes and can be undone at any time.

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🚀 Two selectable speed levels

During activation, you can choose between two tuning levels:

🔹 Option 1: Up to 32 km/h

• Motor assistance up to about 32 km/h
• Actual speed is displayed correctly on the display
• No split speed display
• Reliable and everyday-suitable setting
• Significantly more pleasant riding feel
• Also suitable for Bosch Smart System e-bikes with ABS

This setting is recommended if you value a correct display and the most reliable operation possible.

🔹 Option 2: Up to 45 km/h – Stage 2

• Motor assistance up to about 45 km/h
• Maximum power release
• Speed display is shown split

Example:

• Display shows: 20 km/h
• Actual speed: about 40 km/h

The Stage 2 setting is aimed at experienced users who want to use the maximum assistance of their e-bike.

The actually achievable speed depends, among other things, on motor power, gear ratio, rider weight, battery charge level, tire pressure, and riding conditions.

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⚠️ Important note for e-bikes with ABS

For Bosch Smart System e-bikes with integrated ABS, for technical reasons only the speed level up to 32 km/h can be used.

The 45 km/h Stage 2 setting is not compatible in combination with Bosch ABS and cannot be installed on these vehicles.

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⚙️ Easy activation via 1dragon.de

This is how the installation works:

1. Receive the digital license code by email.
2. Switch on the e-bike.
3. Connect the e-bike with a USB-C data cable.
4. Use a Windows PC, laptop, or compatible Android smartphone.
5. https://1dragon.de open in a compatible browser.
6. Enter the license code completely.
7. Select the desired speed level.
8. Activate the tuning.

⏱️ The installation usually takes about five minutes.

Important

The USB-C cable used must be able to transfer data. Pure charging cables are not suitable and often result in the e-bike not being recognized.

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🔑 Enter the license code correctly

Please enter the license code completely, including all hyphens.

Without hyphens, the license code may not be recognized by the system.

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🔄 Procedure for a required software update

If a software update is necessary before activation, the following procedure may occur:

1. The update starts automatically.
2. The e-bike switches off.
3. The update is installed in the background.
4. The connection is disconnected in the meantime – this is normal.
5. Wait about five minutes.
6. Switch the e-bike back on.
7. Open https://1dragon.de again.
8. Re-establish the connection.
9. Enter the license code again and carry out the activation.

After successful installation, the e-bike may switch off automatically again. This behavior is also normal.

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📲 Activate or deactivate tuning at any time

The software tuning can, via https://1dragon.de, be deactivated again at any time.

This offers you the following advantages:

• Original state can be restored
• No permanently installed tuning module
• Practical before service or maintenance work
• Suitable for a later sale of the e-bike
• Flexible selection of the available speed level

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✅ Advantages of the digital Bosch tuning

• 🚀 Motor assistance up to about 32 or 45 km/h
• 📟 Correct speed display in 32 km/h mode
• ⚡ Maximum assistance in Stage 2 mode
• 🔧 No opening of the motor required
• 🧩 No tuning chip and no additional module
• 🔌 Activation via a USB-C data connection
• 📩 Fast digital delivery by email
• 🔁 Can be deactivated and reverted at any time
• 🏠 Installation conveniently from home
• ⏱️ Activation within a few minutes
• 🛠️ No mechanical intervention in the motor

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🔥 Extensive compatibility

The digital license code is generally intended for Bosch Smart System e-bikes of the BES3 generation – regardless of the respective display or control unit.

Supported are, among others:

• Bosch Smart System e-bikes with spoke magnet
• Systems with rim magnet
• Bosch Smart System with ABS in 32 km/h mode
• Current Bosch Smart System motors
• Different Smart System configurations
• Bosch Smart System hub motors

Before future software or firmware updates, the current compatibility should be checked.

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🔍 What is the Bosch Smart System (BES3)?

The Bosch Smart System, also called BES3, is the newer connected e-bike system generation from Bosch, which has been used approximately since model year 2022.

Typical features are:

• Connection with the Bosch eBike Flow app
• Bluetooth connection
• Digital configuration
• Over-the-air updates
• New display and remote generations
• System Controller and LED Remote

As a simple guideline:

👉 If your e-bike can be connected to the Bosch eBike Flow app, it is usually a compatible Bosch Smart System.

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📟 Compatible displays and control units

The license code is suitable for the common display and control variants of the Bosch Smart System.

Kiox series

• Kiox 300
• Kiox 400C
• Kiox 500

Purion series

• Purion 200
• Purion 400

Further Smart System components

• Intuvia 100
• System Controller
• LED Remote
• Mini Remote
• Mini Remote Dropbar
• SmartphoneGrip
• Bosch Smart System hub motors

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❌ Not compatible

The license code is not suitable for:

• Bosch e-bike systems of generation 1 to 4 or BES2
• S-pedelecs that already support up to 45 km/h ex works
• Systems that are not compatible with the Bosch eBike Flow app

For Bosch systems of generation 1 to 4, a separate license code is required.

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⚠️ Check ride profiles after installation

If, on https://1dragon.de, the desired speed is shown after activation but the e-bike still only assists up to about 25 km/h, this is often due to the settings of the Bosch eBike Flow app.

There, ride profiles whose maximum speed is set to 25 km/h may still be active.

Solution

1. Open the Bosch eBike Flow app.
2. Select the riding mode or ride profiles.
3. Adjust the maximum speed of the respective ride profile.
4. If available, set the speed to 32 km/h.
5. Save the changes.
6. Test the e-bike again.

Afterwards, the increased motor assistance should be available.

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⚠️ Further important technical notes

After successful installation, a warning message may appear when switching on, indicating that you must not be distracted while riding.

In addition, after activation the e-bike may generally start in assistance level 0. The desired assistance level must then be selected after each switch-on.

Additionally unlocked ports or functions may be reset by the installation. These include, for example:

• Power supply for a charging socket
• Power port for charging a smartphone
• Electronic shifting
• Further previously unlocked system functions

These functions may need to be unlocked again by a specialist dealer after installation.

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⚠️ Note on Bosch error 504

In 45 km/h mode, tuning detection or Bosch error 504 may occur in individual cases.

The 32 km/h mode works considerably more reliably in practice and is therefore recommended for the most trouble-free operation possible.

A full guarantee that tuning detection will permanently not occur cannot be given.

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🔄 Future Bosch updates

Bosch can release new software or firmware updates at any time. After installing a future update, there is a possibility that the tuning will temporarily or permanently no longer work.

Therefore, before each update, check whether the new software version is already supported. Only install an update once compatibility has been confirmed.

Permanent compatibility with future updates not yet available at the time of purchase cannot be guaranteed.

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⚖️ Legal and safety-relevant notes

By activating the tuning, the operating license or road approval of the e-bike may become void. The legal regulations differ from country to country.

Please note:

• Use exclusively on private property or in areas where such use is expressly permitted
• No use in public road traffic unless the vehicle is appropriately approved and insured there
• Insurance coverage and manufacturer warranty may be impaired
• Use and installation are at your own responsibility
• Higher speeds lead to increased wear
• Braking distance and load on the components may increase
• Suitable protective clothing and a helmet are expressly recommended
• The e-bike should be in technically perfect condition

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📩 Digital product and right of withdrawal

The license code is delivered digitally by email. Upon commencement of the execution or provision of the digital content and your corresponding consent, the statutory right of withdrawal may expire before the end of the regular withdrawal period.

A return or refund after provision or use of the license code is therefore generally excluded.

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❓ Frequently asked questions

Can I deactivate the tuning again?

Yes. Deactivation is possible at any time via https://1dragon.de. This allows the original state of the system to be restored.

Does the installation work with a smartphone?

Yes, activation is possible with a compatible Android smartphone. It is important that the smartphone supports USB data connections and that a genuine USB-C data cable is used.

Does the installation work with an iPhone or iPad?

The USB-C activation is recommended via a compatible Android device or a Windows PC or laptop. iOS devices are not supported for the installation.

Why is my e-bike not recognized?

In most cases, it is due to the USB-C cable used. Many cables can only charge the device but do not transfer any data.

Therefore, use a high-quality USB-C data cable and, if necessary, test a second cable.

Why does my e-bike not reach the selected speed?

Check the following points:

• Settings and ride profiles in the Bosch eBike Flow app
• Battery charge level
• Tire pressure
• Gear ratio and selected gear
• Rider weight and payload
• Gradient and headwind
• Technical condition of the e-bike

The specified speeds represent the possible limit of the motor assistance. They are not a guaranteed riding speed.

Is the tuning compatible with Bosch ABS?

Yes, but exclusively in the mode up to 32 km/h. The 45 km/h Stage 2 setting is not compatible with Bosch ABS.

Does the motor have to be opened?

No. Neither is the motor opened nor a hardware module installed. The activation is carried out completely digitally via the USB-C connection.

What happens with a future Bosch update?

A future update can impair the function of the tuning. Therefore, before installing an update, check whether the relevant software version is already supported.

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🏁 Conclusion

The Bosch Smart System Tuning License Code offers a particularly straightforward way to adjust the speed limit of a BES3 e-bike.

No tuning chip, no opening of the motor, and no workshop visit: You connect your e-bike via USB-C, open https://1dragon.de, enter the license code, and select the desired setting.

👉 Connect, select speed, and activate digitally.

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WEEE-Reg.-Nr.: DE 98802828