FXTUL M4 motorcycle diagnostic scanners compared.

FXTUL M4 motorcycle diagnostic scanners compared: which version do you need?

Modern motorcycles rely on an increasing number of electronic control units. The engine management system is only one part of the motorcycle’s electronic network. Depending on the model, separate control units may be fitted for ABS, the instrument panel, immobiliser, tyre pressure monitoring, electronic suspension and body electronics.

When a warning light appears, the engine runs poorly or a service reminder remains visible after maintenance, a basic universal OBD2 code reader may not provide enough information. General OBD2 scanners are primarily designed to access emissions-related engine data. They will not necessarily communicate with the manufacturer-specific systems fitted to a motorcycle.

The FXTUL M4 range offers a more specialised solution. These compact handheld scanners are designed for motorcycle diagnostics and can provide access to manufacturer-specific fault codes, live data, control units and maintenance functions.

Four different versions are available:

• FXTUL M4-EU for several European and Japanese motorcycle brands.
• FXTUL M4-DUC for Ducati motorcycles.
• FXTUL M4-BMW for BMW Motorrad.
• FXTUL M4-HD for Harley-Davidson motorcycles.

Although the four units look very similar, they contain different diagnostic software and are supplied with different adapter cables. Selecting the correct version is therefore essential.

In this guide, we explain what the FXTUL M4 can do, compare all four versions and help you choose the correct motorcycle diagnostic scanner.

What is the FXTUL M4?

The FXTUL M4 is a compact, stand-alone motorcycle diagnostic scanner with its own colour display and physical control buttons. It does not require a smartphone, tablet or laptop for normal diagnostic work.

Once connected to the motorcycle’s diagnostic socket, the user can select the relevant brand, model and control unit. On supported motorcycles, the scanner can identify installed systems and communicate directly with the available electronic modules.

Depending on the M4 version, motorcycle and control unit, functions may include:

• Automatic scanning of installed control units.
• Reading ECU and system information.
• Reading and clearing fault codes.
• Displaying manufacturer-specific fault descriptions.
• Viewing live sensor data.
• Reading freeze-frame information.
• Performing actuator and component tests.
• Resetting service reminders.
• Resetting or relearning throttle values.
• Resetting adaptation values.
• Adjusting idle speed on supported models.
• Performing supported ABS service procedures.
• Monitoring battery and system voltage.
• Viewing system status and diagnostic reports.

Not every function is available on every motorcycle. The exact capabilities depend on the brand, model, model year, installed control units and the diagnostic support included in the scanner software.

More than a universal OBD2 code reader

A universal OBD2 scanner is mainly intended to read standard emissions-related faults from the engine control unit. On a motorcycle, it may only display general P-codes and a limited selection of engine data.

Manufacturer-specific motorcycle diagnostics can go considerably further.

On supported models, the FXTUL M4 may communicate with systems such as:

• Engine Control Module or ECM.
• ABS control unit.
• Instrument cluster.
• Body Control Module.
• Immobiliser and security system.
• Tyre pressure monitoring system.
• Electronic suspension.
• Central vehicle electronics.
• Transmission or quickshifter system.
• Other installed electronic modules.

This makes the M4 useful for more than simply clearing an engine warning light. It can also assist with systematic fault-finding, maintenance and component testing.

Read and clear motorcycle fault codes

When a control unit detects an abnormal signal or system condition, it can store a Diagnostic Trouble Code, usually abbreviated to DTC.

The FXTUL M4 can retrieve these fault codes from supported control units and, where available, display a corresponding description. Manufacturer-specific descriptions can provide considerably more useful information than the generic codes displayed by a basic OBD2 reader.

A fault code does not automatically prove that the component named in the description is defective. Possible causes can include:

• A failed sensor.
• Damaged wiring.
• A loose or corroded connector.
• A poor earth connection.
• Interrupted power supply.
• Low battery voltage.
• Mechanical problems causing an implausible sensor value.
• Communication problems between control units.

A fault code should therefore be treated as the starting point for further investigation. Check the wiring, connectors, supply voltage and mechanical condition before replacing components.

Only clear the fault after investigating or repairing the cause. If the problem is still present, the control unit will usually store the code again.

Use live data for more accurate diagnostics

Live data shows the information being received or calculated by a control unit while the motorcycle is switched on or running.

Depending on the model, available values may include:

• Engine speed.
• Battery and charging voltage.
• Coolant temperature.
• Intake air temperature.
• Throttle position.
• Sensor and switch status.
• Fuel injection information.
• Ignition data.
• Wheel speeds.
• ABS signals.
• Operating status of different components.

Live data is particularly valuable when diagnosing intermittent faults. If a motorcycle only develops a problem once the engine is warm, for example, the user can monitor temperature, voltage and throttle values as the engine reaches operating temperature.

Some data can also be displayed as a graph. Sudden signal interruptions or implausible changes can be easier to identify in a graph than in a rapidly changing list of numbers.

Actuator and component tests

On supported motorcycles, an actuator test allows the scanner to send an operating command to an electronic component. This can help determine whether the component and its electrical control circuit respond correctly.

Depending on the brand and model, supported tests may include:

• Fuel pump activation.
• Cooling fan activation.
• Injector tests.
• Relay tests.
• Throttle actuator operation.
• Exhaust valve operation.
• Warning light tests.
• ABS pump activation.
• ABS solenoid valve activation.
• Other electronically controlled components.

Only perform actuator tests when you understand which component will be activated. Ensure that the motorcycle is safely positioned and keep hands, clothing and cables away from moving or hot components.

Motorcycle service and maintenance functions

In addition to reading fault codes and live data, the FXTUL M4 can offer manufacturer-specific maintenance functions on supported motorcycles.

Depending on the selected version and vehicle, these may include:

• Resetting a service indicator.
• Setting the next service date or mileage.
• Resetting or relearning the throttle position.
• Resetting adaptation values.
• Adjusting idle speed.
• Performing ABS service procedures.
• Calibrating supported components.
• Resetting maintenance-related values.

The presence of a function in a general product description does not guarantee its availability on every motorcycle. The exact function must be supported by the control unit fitted to the particular model.

Four scanners with different brand coverage

The four M4 models use a similar housing, display and menu structure. However, they are not universal versions of the same product.

Each model contains its own brand software and is supplied with an adapter set for the intended motorcycles.

Version	Main application
FXTUL M4-EU	Multiple Japanese and European motorcycle and scooter brands
FXTUL M4-DUC	Ducati motorcycles
FXTUL M4-BMW	BMW Motorrad
FXTUL M4-HD	Harley-Davidson motorcycles

For example, BMW is not automatically included in the M4-EU package. BMW, Ducati and Harley-Davidson each require their dedicated M4 version.

FXTUL M4-EU: multi-brand motorcycle diagnostics

The FXTUL M4-EU motorcycle diagnostic scanner is the broadest multi-brand model in the M4 range.

Depending on the current software version and motorcycle model, supported brands include:

• Yamaha.
• Honda.
• Suzuki.
• Kawasaki.
• Vespa.
• Piaggio.
• Triumph.
• KTM.
• Aprilia.
• Royal Enfield.

This makes the M4-EU particularly useful for independent motorcycle workshops, motorcycle dealers and owners who maintain motorcycles from more than one manufacturer.

What can the M4-EU do?

Depending on the motorcycle, the scanner may provide access to systems such as the engine control unit, ABS, instrument cluster, immobiliser and central electronics.

Available functions may include:

• Automatic control unit scanning.
• Reading and clearing fault codes.
• Viewing live data.
• Reading freeze-frame information.
• Performing actuator tests.
• Resetting service reminders.
• Resetting or relearning the throttle position.
• Performing supported ABS service functions.
• Reading vehicle and control unit information.

Coverage varies between manufacturers and models. A recent Yamaha may offer a different selection of systems and functions from an older Honda, Suzuki or Piaggio scooter.

Who should choose the M4-EU?

The M4-EU is a good choice if you:

• Work on several Japanese and European motorcycle brands.
• Want one compact scanner for multiple vehicles.
• Diagnose both motorcycles and scooters.
• Need more coverage than a basic OBD2 reader can offer.
• Prefer a stand-alone tool without a laptop or mobile app.

Do not select the M4-EU for BMW, Ducati or Harley-Davidson simply because it is described as the European version. Dedicated versions are available for these manufacturers.

FXTUL M4-DUC: dedicated Ducati diagnostics

The FXTUL M4-DUC diagnostic scanner is designed specifically for Ducati motorcycles.

Ducati has used different ECUs, diagnostic connectors and electronic systems across its model range. The M4-DUC includes Ducati-specific software and connections for supported generations.

M4-DUC diagnostic functions

Depending on the Ducati model and installed control units, available functions may include:

• Automatic system scanning.
• Engine control unit diagnostics.
• ABS diagnostics.
• Instrument cluster diagnostics.
• Reading and clearing Ducati-specific fault codes.
• Viewing ECU live data.
• Checking sensor values.
• Performing actuator tests.
• Resetting the oil service.
• Resetting the service reminder.
• Resetting or relearning the throttle position.
• Resetting adaptation values.
• Supported DQS-related functions.
• Available PIN or security service functions.

Diagnostic and maintenance coverage can differ significantly between older Ducati motorcycles and the latest models. Always verify compatibility before purchasing if you need a particular function on a recent model.

Is the M4-DUC an ECU tuning tool?

No. The M4-DUC is intended for diagnostics, fault-finding and supported maintenance procedures. It is not designed to rewrite fuel or ignition maps and should not be considered an ECU flashing or tuning tool.

Who is the M4-DUC intended for?

This model is suitable for:

• Ducati owners who carry out their own maintenance.
• Independent Ducati specialists.
• Motorcycle dealers inspecting used Ducati motorcycles.
• Technicians who need access to fault codes and live data.
• Users who need supported Ducati service functions.

FXTUL M4-BMW: diagnostics for BMW Motorrad

The FXTUL M4-BMW motorcycle diagnostic scanner is the dedicated version for BMW Motorrad.

Older BMW motorcycles commonly use a round 10-pin diagnostic connector, while many newer models use a rectangular 16-pin OBD connector. The M4-BMW is supplied with connections intended for supported BMW generations.

Always inspect the diagnostic socket on the motorcycle before connecting the scanner. The registration year does not necessarily correspond with the actual production or model year.

BMW motorcycle system coverage

Depending on the model, the M4-BMW may communicate with:

• Engine control unit.
• ABS control unit.
• Instrument cluster.
• Central vehicle electronics.
• Immobiliser.
• Tyre pressure monitoring.
• Electronic suspension.
• Other installed BMW control units.

Available M4-BMW functions

Depending on the motorcycle and ECU, the scanner may offer:

• Automatic or manual system scanning.
• Reading control unit and vehicle information.
• Reading and clearing BMW-specific fault codes.
• Viewing live sensor data.
• Reading freeze-frame information.
• Performing actuator tests.
• Resetting the service interval.
• Setting the next service date and mileage.
• Resetting throttle or adaptation values.
• Performing an ABS bleeding procedure on supported systems.
• Carrying out available calibrations and maintenance procedures.

For many BMW owners, the ability to reset the service reminder is particularly useful. After completing an oil and filter service, the next maintenance date or mileage can be entered on supported motorcycles.

FXTUL M4-BMW or a smartphone diagnostic system?

BMW motorcycle diagnostics can also be performed with certain Bluetooth adapters and mobile apps. The M4-BMW takes a different approach by combining the interface, display and software in one unit.

Advantages include:

• No Android phone or tablet required.
• No separate diagnostic app to purchase.
• No Bluetooth pairing.
• No dependence on mobile operating system updates.
• Dedicated scanner and BMW software in one package.
• Convenient for regular workshop use.

The best choice depends on personal preference, but the M4-BMW is particularly attractive to users who prefer a conventional handheld diagnostic scanner.

FXTUL M4-HD: Harley-Davidson diagnostics

The FXTUL M4-HD diagnostic scanner for Harley-Davidson contains dedicated Harley-Davidson diagnostic software.

Harley-Davidson has used different diagnostic connectors, including 4-pin and 6-pin connections. The M4-HD package includes adapters for supported applications.

Harley-Davidson control units

Depending on the model and year, the scanner may communicate with systems such as:

• Engine Control Module or ECM.
• ABS and EHCU.
• Body Control Module or BCM.
• Instrument panel.
• Speedometer.
• TSM or TSSM.
• Security systems.
• Other installed Harley-Davidson modules.

M4-HD diagnostic and service functions

Available functions may include:

• Rapid scanning of multiple control units.
• Reading and clearing Harley-Davidson fault codes.
• Reading module and system information.
• Viewing real-time data.
• Checking sensor values.
• Performing fuel pump and relay tests.
• Activating the cooling fan.
• Adjusting idle speed where supported.
• Resetting throttle and adaptation values.
• Testing exhaust valve operation.
• Activating the ABS pump.
• Operating ABS solenoid valves.
• Performing a guided ABS bleeding procedure on supported models.

ABS bleeding on a Harley-Davidson

After the braking system has been opened for repair or maintenance, air may remain inside the hydraulic ABS unit. Conventional manual bleeding may not circulate brake fluid through every internal passage of the ABS module.

On supported Harley-Davidson motorcycles, the M4-HD can activate the ABS pump and relevant solenoid valves. This allows brake fluid to move through internal sections of the hydraulic unit as part of the correct bleeding procedure.

Support depends on the model year and fitted ABS system. Always follow the appropriate workshop procedure and use the correct brake fluid.

A note about service resets

The M4-HD provides various diagnostic, actuator, adaptation and ABS functions. However, not every Harley-Davidson model uses a conventional adjustable service reminder. Do not assume that a specific service-reset function is available without checking compatibility for the exact motorcycle.

Which FXTUL M4 should you buy?

The motorcycle manufacturer is the first factor when selecting an M4 scanner.

Choose the FXTUL M4-EU if:

• You own a supported Yamaha, Honda, Suzuki or Kawasaki.
• You work on Vespa or Piaggio scooters.
• You need diagnostics for a supported Triumph, KTM, Aprilia or Royal Enfield.
• You maintain motorcycles from several brands.
• You want a compact multi-brand scanner.

View the FXTUL M4-EU for European and Japanese motorcycles.

Choose the FXTUL M4-DUC if:

• You own or service Ducati motorcycles.
• You require Ducati-specific system access.
• You want to perform supported Ducati service procedures.
• You work with different generations of Ducati diagnostic connectors.

View the FXTUL M4-DUC for Ducati motorcycles.

Choose the FXTUL M4-BMW if:

• You own or service a BMW motorcycle.
• You need access to BMW-specific control units.
• You want to read fault codes and live data.
• You need to reset the service interval on supported models.
• You work with older 10-pin and newer OBD-equipped BMW motorcycles.

View the FXTUL M4-BMW for BMW Motorrad.

Choose the FXTUL M4-HD if:

• You own or service a Harley-Davidson.
• You need access to Harley-specific systems.
• You work with 4-pin and 6-pin Harley diagnostic connectors.
• You require supported ABS, actuator or adaptation functions.
• You prefer a stand-alone scanner.

View the FXTUL M4-HD for Harley-Davidson motorcycles.

Is the FXTUL M4 suitable for professional use?

The FXTUL M4 range is suitable for private motorcycle owners, enthusiasts, motorcycle dealers and smaller independent workshops.

For an owner or specialist working mainly with one manufacturer, a dedicated M4 version provides useful diagnostic coverage without the cost of a large professional tablet system. The M4-EU is more suitable for users who regularly work on several common motorcycle and scooter brands.

A high-end universal diagnostic platform may support more manufacturers, programming procedures and advanced functions. However, such systems are considerably more expensive and may require paid annual subscriptions.

The M4 provides a practical balance between cost, portability and manufacturer-specific functionality.

Software updates without an annual subscription

FXTUL releases software updates for the M4 range. These updates may improve:

• Motorcycle model coverage.
• Service functions.
• Fault code descriptions.
• Communication with control units.
• Diagnostic stability.
• General operation.

The M4 does not require an annual update subscription. It is also not restricted to a single VIN and can be used on multiple motorcycles within the supported brand coverage.

For software updates, the scanner is connected to a computer with the supplied USB cable. Always follow the manufacturer’s update instructions and do not disconnect the scanner during the update process.

Updates may improve coverage, but they do not guarantee complete support for every future motorcycle model.

What should you check before ordering?

Before selecting a scanner, check:

1. The motorcycle manufacturer.
2. The exact model and version.
3. The production and model year.
4. The type of diagnostic connector.
5. The control unit you need to access.
6. The specific diagnostic or service function required.
7. Any previous modifications to the ECU or electronics.

The motorcycle brand alone may not be enough when a specific advanced function is required. Manufacturers sometimes use different ECUs, ABS systems and connectors within the same model range.

If you need compatibility advice, provide the full model, year and required function. A clear photograph of the diagnostic connector can also be helpful.

Safe use of motorcycle diagnostic equipment

A diagnostic scanner is a valuable fault-finding tool, but it does not replace technical knowledge or an official workshop manual.

Follow these basic precautions:

• Make sure the motorcycle battery is fully charged.
• Use suitable voltage support during longer procedures.
• Never force a diagnostic connector.
• Keep cables away from hot or moving parts.
• Record original settings before performing a reset.
• Investigate the cause before clearing fault codes.
• Only perform actuator tests in a safe environment.
• Follow the correct technical procedure for ABS work.
• Never interrupt a software update.

Low or unstable battery voltage can cause communication errors and may store additional fault codes in several control units.

Frequently asked questions about the FXTUL M4

Does the FXTUL M4 require a laptop?

No. The M4 is a stand-alone scanner with its own display and controls. A computer may be required to install software updates.

Does the scanner use a smartphone app?

No Android or iOS app is required for normal use. Diagnostic information and menus are displayed directly on the scanner.

Can the M4 clear motorcycle fault codes?

Yes, it can clear codes from supported control units. However, clearing a code does not repair the underlying fault. An active problem will usually cause the code to return.

Can it reset a motorcycle service reminder?

Service resets are available on various supported models. Compatibility depends on the manufacturer, model, year, dashboard and control unit.

Can it diagnose the ABS system?

The M4 can access ABS control units on many supported motorcycles. Advanced functions such as ABS bleeding are not available on every model or M4 version.

Can it programme motorcycle keys?

Certain versions may offer limited security or key-related service functions on supported motorcycles. The M4 is not a universal key programming device. Verify the exact required function before ordering.

Can the M4 tune an ECU?

No. The FXTUL M4 is primarily a diagnostic and service tool. It is not intended for general ECU remapping or performance tuning.

Can it be used on more than one motorcycle?

Yes. The scanner is not restricted to one VIN. It can be used on multiple vehicles within the supported brands and models of the selected version.

Are software updates free?

The M4 range supports software updates without an annual subscription. Available improvements and additional coverage depend on updates released by the manufacturer.

Can another brand package be installed later?

Do not assume that a different brand package can simply be added afterwards. The four versions are sold with their own software licences and cable sets. It is best to choose the correct version when purchasing.

Which M4 is suitable for BMW motorcycles?

BMW Motorrad requires the FXTUL M4-BMW, not the standard M4-EU.

Which version is suitable for Ducati?

Choose the FXTUL M4-DUC for Ducati motorcycles.

Which version is suitable for Harley-Davidson?

Choose the FXTUL M4-HD for Harley-Davidson motorcycles.

Conclusion: four compact scanners for different motorcycle brands

The FXTUL M4 range combines manufacturer-specific motorcycle diagnostics with the convenience of a compact stand-alone scanner. No smartphone, Bluetooth connection or separate diagnostic application is required.

Selecting the correct version is essential:

• The FXTUL M4-EU supports several European and Japanese motorcycle and scooter brands.
• The FXTUL M4-DUC is designed for Ducati.
• The FXTUL M4-BMW provides dedicated BMW Motorrad diagnostics.
• The FXTUL M4-HD contains the software and adapter cables required for supported Harley-Davidson motorcycles.

Depending on the motorcycle, these scanners can read and clear fault codes, display live data, scan multiple control units and perform supported actuator and maintenance functions.

The FXTUL M4 scanners are available through OBD24U, the automotive, motorcycle and marine diagnostics specialist within Q24U Brands. International ordering is available through OBD24U.nl. Product pages are displayed in Dutch and can be translated automatically using the translation function in most modern web browsers.