Product Comparison

Thinktool Expert 191, 195, 391, 394 AI, and 399 comparison

The number and AI tag in the Expert family do not mean the devices have the same hardware; each model's hardware, VCI structure, and supported functions are evaluated separately. This guide compares Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 models based on service tasks, connection conditions, package, and usage costs.

Prepared by: Otobiltek Content TeamPublication: Technical check:
Thinktool Expert 191 Diagnostic Device product imageThinktool Expert 191 Diagnostic DeviceThinktool Expert 195 product imageThinktool Expert 195Thinktool Expert 391 product imageThinktool Expert 391Thinktool Expert 394 AI product imageThinktool Expert 394 AIThinktool Expert 399 product imageThinktool Expert 399

Quick comparison

Thinktool Expert 191, 195, 391, 394 AI, and 399 comparison: technical comparison

Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 are compared based on hardware and VCI, measurement workflow, AI-supported features, and professional service capacity.

Comparison CriteriaThinktool Expert 191 Diagnostic DeviceThinktool Expert 195Thinktool Expert 391Thinktool Expert 394 AIThinktool Expert 399
Product TypeService - Vehicle diagnostic devicesService - Vehicle diagnostic devicesProfessional - Vehicle diagnostic devicesProfessional - Vehicle diagnostic devicesProfessional - Vehicle diagnostic devices
Main UseFull system scan / Bi-directional active testMaintenance functions / Coding needsDoIP/CAN FD / Online programmingPassenger and commercial vehicles / EV packageAI-supported diagnostics / Passenger and commercial vehicles
Hardware and VCIFull system scan / Vehicle and task scopeMaintenance functions / Function listDoIP/CAN FD / Protocol supportPassenger and commercial vehicles / Package scopeAI-supported diagnostics / Package scope
Measurement workflowBi-directional active test / Passenger vehicle softwareCoding needs / Vehicle scopeOnline programming / Programming scopeEV package / Vehicle groupPassenger and commercial vehicles / Vehicle group
AI-supported featuresCAN FD and DoIP / 2-year update periodAdaptation / Package contentsProfessional service / Vehicle groupAdvanced diagnostics / Software licenseEV scope / Software license
Professional service capacity35 maintenance functions / Box and VCI contentsMaintenance functions / Function listDoIP/CAN FD / Protocol supportPassenger and commercial vehicles / Package scopeAI-supported diagnostics / Package scope
Initial CheckVehicle and task scope / Passenger vehicle softwareFunction list / Vehicle scopeProtocol support / Programming scopePackage Scope / Vehicle GroupPackage Scope / Vehicle Group

Decision guide

What is the main difference between Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399?

When comparing Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399, criteria such as hardware and VCI, measurement workflow, AI-supported features, and professional service capacity are used. For the comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399, the connection type, supported service menu, and recorded data at the end of the operation differentiate the models. Screen size or price does not solely determine the choice for Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 if the required vehicle and function scope is not met.

Thinktool Expert 191 Diagnostic Tool is a service-level diagnostic device. Its primary applications and hardware features include: full system scan, bi-directional active test, and 35 maintenance functions with CAN FD and DoIP. When comparing Thinktool Expert 191 Diagnostic Tool, hardware and VCI, vehicle and task scope, and passenger vehicle software are considered.

Thinktool Expert 195 is a service-level diagnostic device. Its primary applications and hardware features include: maintenance functions, coding needs, and adaptation. When comparing Thinktool Expert 195, function list, vehicle scope, and hardware and VCI are considered.

Thinktool Expert 391 is a professional-level diagnostic device. Its primary applications and hardware features include: DoIP/CAN FD, online programming, and professional service. When comparing Thinktool Expert 391, hardware and VCI, protocol support, and programming scope are considered.

Thinktool Expert 394 AI is a professional-level diagnostic device. Its primary applications and hardware features include: passenger and commercial vehicles, EV package, and advanced diagnostics. When comparing Thinktool Expert 394 AI, hardware and VCI, package scope, and vehicle group are considered.

Thinktool Expert 399 is a professional-level diagnostic device. Its primary applications and hardware features include: AI-supported diagnostics, passenger and commercial vehicles, and EV scope. When comparing Thinktool Expert 399, hardware and VCI, package scope, and vehicle group are considered.

Decision guide

Thinktool Expert 191, 195, 391, 394 AI, and 399 technical specifications

In the technical comparison of Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399, the function, connection, and result of each feature are explained. The comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399, including hardware and VCI and measurement workflow, is based on the manufacturers' current product and vehicle information. Screen size, memory, protocol, number of operations, or vehicle count not found in the official source are not presented as technical specifications in the comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399.

Verified technical information for Thinktool Expert 191 Diagnostic Tool includes: Screen: 8 inches; RAM / Storage: 4 GB / 64 GB; Processor: MTK8365 Cortex-A53. When using Thinktool Expert 191 Diagnostic Tool, vehicle and task scope, passenger vehicle software, and hardware and VCI are checked together. Screen size, memory, protocol, number of operations, or vehicle count not found in the official source for Thinktool Expert 191 Diagnostic Tool are not presented as technical specifications.

Verified technical information for Thinktool Expert 195 includes: Product type: Vehicle fault diagnosis devices; Usage level: Service; Key functions: Maintenance functions and Coding needs. When using Thinktool Expert 195, function list, vehicle scope, and hardware and VCI are checked together. Screen size, memory, protocol, number of operations, or vehicle count not found in the official source for Thinktool Expert 195 are not presented as technical specifications.

Verified technical information for Thinktool Expert 391 includes: Product type: Vehicle fault diagnosis devices; Usage level: Professional; Key functions: DoIP/CAN FD and Online programming. When using Thinktool Expert 391, protocol support, programming scope, and hardware and VCI are checked together. Screen size, memory, protocol, number of operations, or vehicle count not found in the official source for Thinktool Expert 391 are not presented as technical specifications.

Verified technical information for Thinktool Expert 394 AI includes: Product type: Vehicle fault diagnosis devices; Usage level: Professional; Key functions: Passenger and commercial vehicles and EV package. When using Thinktool Expert 394 AI, package scope, vehicle group, and hardware and VCI are checked together. Screen size, memory, protocol, number of operations, or vehicle count not found in the official source for Thinktool Expert 394 AI are not presented as technical specifications.

Verified technical information for Thinktool Expert 399 includes: Product type: Vehicle fault diagnosis devices; Usage level: Professional; Key functions: AI-supported diagnostics and Passenger and commercial vehicles. When using Thinktool Expert 399, package scope, vehicle group, and hardware and VCI are checked together. Screen size, memory, protocol, number of operations, or vehicle count not found in the official source for Thinktool Expert 399 are not presented as technical specifications.

  • Hardware and VCI
  • Measurement workflow
  • AI-supported features
  • Professional service capacity

Decision guide

Thinktool Expert 191, 195, 391, 394 AI, and 399 connection and package differences

In the packages of Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399, the tablet or main device, VCI, cables, adapters, power supply, and carrying equipment vary by model. Optional modules in the comparison images of Thinktool Expert 191, 195, 391, 394 AI, and 399 are included in the standard package only if their names and quantities are listed in the box contents. Professional service capacity indicates the impact of the included hardware and separately purchased accessories on the total cost.

The Thinktool Expert 191 Diagnostic Tool package includes the tablet or main device, VCI, cables, adapters, power supply, and carrying equipment as separate items. When delivering the Thinktool Expert 191 Diagnostic Tool, vehicle and task scope, passenger vehicle software, 2-year update period, and box and VCI contents, along with hardware and VCI, are checked together. Optional equipment is included in the purchased package only if explicitly stated in the Thinktool Expert 191 Diagnostic Tool box contents.

The Thinktool Expert 195 package includes the tablet or main device, VCI, cables, adapters, power supply, and carrying equipment as separate items. When delivering the Thinktool Expert 195, function list, vehicle scope, and package contents, along with hardware and VCI, are checked together. Optional equipment is included in the purchased package only if explicitly stated in the Thinktool Expert 195 box contents.

The Thinktool Expert 391 package includes the tablet or main device, VCI, cables, adapters, power supply, and carrying equipment as separate items. When delivering the Thinktool Expert 391, protocol support, programming scope, and vehicle group, along with hardware and VCI, are checked together. Optional equipment is included in the purchased package only if explicitly stated in the Thinktool Expert 391 box contents.

The Thinktool Expert 394 AI package includes the tablet or main device, VCI, cables, adapters, power supply, and carrying equipment as separate items. When delivering the Thinktool Expert 394 AI, package scope, vehicle group, and software license, along with hardware and VCI, are checked together. Optional equipment is included in the purchased package only if explicitly stated in the Thinktool Expert 394 AI box contents.

The Thinktool Expert 399 package includes the tablet or main device, VCI, cables, adapters, power supply, and carrying equipment as separate items. When delivering the Thinktool Expert 399, package scope, vehicle group, and software license, along with hardware and VCI, are checked together. Optional equipment is included in the purchased package only if explicitly stated in the Thinktool Expert 399 box contents.

Decision guide

Thinktool Expert 191, 195, 391, 394 AI, and 399: software and usage costs

For Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399, usage costs are affected not only by the initial sales price but also by the included software period, renewal method, VCI, cables, and optional modules. In the comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399, the device account, serial number, update region, and physical package are examined together. Changes in hardware and VCI may also require changes in the hardware or license package.

When using Thinktool Expert 191 Diagnostic Tool, the device account, serial number, included software period, and renewal method are recorded. For Thinktool Expert 191 Diagnostic Tool, vehicle and task scope, passenger vehicle software, and hardware and VCI are checked during delivery and initial setup. If Thinktool Expert 191 Diagnostic Tool is used commonly in the workshop, the user, VCI, and operation logging system are determined.

When using Thinktool Expert 195, the device account, serial number, included software period, and renewal method are recorded. For Thinktool Expert 195, function list and vehicle scope, along with hardware and VCI, are checked during delivery and initial setup. If Thinktool Expert 195 is used commonly in the workshop, the user, VCI, and operation logging system are determined.

When using Thinktool Expert 391, the device account, serial number, included software period, and renewal method are recorded. For Thinktool Expert 391, protocol support and programming scope, along with hardware and VCI, are checked during delivery and initial setup. If Thinktool Expert 391 is used commonly in the workshop, the user, VCI, and operation logging system are determined.

When using Thinktool Expert 394 AI, the device account, serial number, included software period, and renewal method are recorded. For Thinktool Expert 394 AI, package scope and vehicle group, along with hardware and VCI, are checked during delivery and initial setup. If Thinktool Expert 394 AI is used commonly in the workshop, the user, VCI, and operation logging system are determined.

When using Thinktool Expert 399, the device account, serial number, included software period, and renewal method are recorded. For Thinktool Expert 399, package scope and vehicle group, along with hardware and VCI, are checked during delivery and initial setup. If Thinktool Expert 399 is used commonly in the workshop, the user, VCI, and operation logging system are determined.

Difference between active test, adaptation, coding, and programming in diagnostic devices
Difference between active test, adaptation, coding, and programming in diagnostic devices

Decision guide

What does each product do during complex electrical faults?

For complex electrical faults, hardware and VCI, vehicle make-model-year information, and connection conditions are examined. Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 are compared for complex electrical faults solely based on menus supported in the manufacturer's current vehicle and function list. At the end of a complex electrical fault diagnosis, the initial scan, applied service step, and final check are saved in the same work order.

When planning for complex electrical faults with Thinktool Expert 191 Diagnostic Tool, vehicle and task scope, current vehicle and function list, and hardware and VCI are examined. If complex electrical faults are supported in the Thinktool Expert 191 Diagnostic Tool menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for complex electrical faults with Thinktool Expert 195, the function list, current vehicle and function list, and hardware and VCI are examined. If complex electrical faults are supported in the Thinktool Expert 195 menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for complex electrical faults with Thinktool Expert 391, protocol support, current vehicle and function list, and hardware and VCI are examined. If complex electrical faults are supported in the Thinktool Expert 391 menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for complex electrical faults with Thinktool Expert 394 AI, package scope, current vehicle and function list, and hardware and VCI are examined. If complex electrical faults are supported in the Thinktool Expert 394 AI menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for complex electrical faults with Thinktool Expert 399, package scope, current vehicle and function list, and hardware and VCI are examined. If complex electrical faults are supported in the Thinktool Expert 399 menu, the initial scan, applied service step, and final check are recorded in the same service record.

Decision guide

What does each product do during control unit and network analysis?

For control unit and network analysis, the measurement workflow, vehicle make-model-year information, and connection conditions are examined. Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 are compared for control unit and network analysis solely based on menus supported in the manufacturer's current vehicle and function list. At the end of control unit and network analysis, the initial scan, applied service step, and final check are saved in the same work order.

When planning for control unit and network analysis with Thinktool Expert 191 Diagnostic Tool, passenger vehicle software, current vehicle and function list, and measurement workflow are examined. If control unit and network analysis is supported in the Thinktool Expert 191 Diagnostic Tool menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for control unit and network analysis with Thinktool Expert 195, vehicle scope, current vehicle and function list, and measurement workflow are examined. If control unit and network analysis is supported in the Thinktool Expert 195 menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for control unit and network analysis with Thinktool Expert 391, programming scope, current vehicle and function list, and measurement workflow are examined. If control unit and network analysis is supported in the Thinktool Expert 391 menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for control unit and network analysis with Thinktool Expert 394 AI, vehicle group, current vehicle and function list, and measurement workflow are examined. If control unit and network analysis is supported in the Thinktool Expert 394 AI menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for control unit and network analysis with Thinktool Expert 399, vehicle group, current vehicle and function list, and measurement workflow are examined. If control unit and network analysis is supported in the Thinktool Expert 399 menu, the initial scan, applied service step, and final check are recorded in the same service record.

Decision guide

What does each product do during standard reporting between technicians?

For standard reporting between technicians, AI-supported features, vehicle make-model-year information, and connection conditions are examined. Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 are compared for standard reporting between technicians solely based on menus supported in the manufacturer's current vehicle and function list. At the end of standard reporting between technicians, the initial scan, applied service step, and final check are saved in the same work order.

When planning for standard reporting between technicians with Thinktool Expert 191 Diagnostic Tool, the 2-year update period, current vehicle and function list, and AI-supported features are examined. If standard reporting between technicians is supported in the Thinktool Expert 191 Diagnostic Tool menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for standard reporting between technicians with Thinktool Expert 195, package contents, current vehicle and function list, and AI-supported features are examined. If standard reporting between technicians is supported in the Thinktool Expert 195 menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for standard reporting between technicians with Thinktool Expert 391, vehicle group, current vehicle and function list, and AI-supported features are examined. If standard reporting between technicians is supported in the Thinktool Expert 391 menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for standard reporting between technicians with Thinktool Expert 394 AI, software license, current vehicle and function list, and AI-supported features are examined. If standard reporting between technicians is supported in the Thinktool Expert 394 AI menu, the initial scan, applied service step, and final check are recorded in the same service record.

When planning for standard reporting between technicians with Thinktool Expert 399, software license, current vehicle and function list, and AI-supported features are examined. If standard reporting between technicians is supported in the Thinktool Expert 399 menu, the initial scan, applied service step, and final check are recorded in the same service record.

Decision guide

Thinktool Expert 191, 195, 391, 394 AI, and 399: which product is suitable for which task?

Professional services managing advanced diagnostics, measurement, and programming tasks, and businesses transitioning to the Thinkcar Expert family. When selecting among Thinktool Expert 191, 195, 391, 394 AI, and 399, the vehicle group, supported functions, VCI connection, daily transaction volume, and reporting method are examined together. If standard reporting between technicians is to be performed regularly, it must be included in the manufacturer's current vehicle and function list. For the comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399, screen size or hardware level alone is not a reason for selection if the required service menu is not available.

Thinktool Expert 191 Diagnostic Tool is suitable for independent workshops performing regular maintenance and fault diagnosis on multi-brand passenger vehicles, technicians transitioning from basic code readers to bi-directional active test-supported tablets, and workshops seeking access to compatible systems in new-generation vehicles using CAN FD and DoIP. Thinktool Expert 191 Diagnostic Tool is not suitable for services primarily using heavy-duty and 24V commercial vehicle software, or for users seeking electric vehicle battery pack diagnostics and high-voltage special adapters. When selecting Thinktool Expert 191 Diagnostic Tool, vehicle and task scope, passenger vehicle software, hardware and VCI, and the delivered package are considered.

Thinktool Expert 195 is suitable for maintenance function needs, coding and adaptation, and service use. Thinktool Expert 195 is not suitable for heavy-duty focused use and EV battery-specific scope. When selecting Thinktool Expert 195, function list, vehicle scope, hardware and VCI, and the delivered package are considered.

Thinktool Expert 391 is suitable for DoIP/CAN FD protocols, online programming, and professional workshop use. Thinktool Expert 391 is not suitable for entry-level use or for solely cable or sensor needs. When selecting Thinktool Expert 391, protocol support, programming scope, hardware and VCI, and the delivered package are considered.

Thinktool Expert 394 AI is suitable for passenger and commercial vehicle service, EV package scope, and advanced diagnostics. Thinktool Expert 394 AI is not suitable for basic code reading only or single-purpose TPMS operations. When selecting Thinktool Expert 394 AI, package scope, vehicle group, hardware and VCI, and the delivered package are considered.

Thinktool Expert 399 is suitable for passenger and commercial vehicle service, EV scope, and AI-supported diagnostic interface. Thinktool Expert 399 is not suitable for basic code reading only or single-purpose TPMS operations. When selecting Thinktool Expert 399, package scope, vehicle group, hardware and VCI, and the delivered package are considered.

Decision guide

Thinktool Expert 191, 195, 391, 394 AI, and 399 comparison: selection summary

The selection among Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 is made based on hardware and VCI, measurement workflow, AI-supported features, and professional service capacity criteria. For the comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399, the current vehicle and function list, connection hardware, software period, and box contents are examined together. The current sales status for Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 is shown on their respective product pages.

Frequently Asked Questions

Most frequently asked questions by customers

Which model is suitable for which task among Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399?

The selection among Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 is made based on the workshop's vehicle profile, daily transaction volume, hardware and VCI, measurement workflow, AI-supported features, and professional service capacity criteria. If complex electrical faults are regularly addressed, the required connection and functionality take priority in this scenario.

Do Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 offer the same functionalities on every vehicle or main device?

No. The functionalities on Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 vary depending on the product type, brand, model, year, control unit, connection, and installed software package. For a comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399, communicating models with vehicles are checked against the manufacturer's current vehicle and function list, and accessories are checked against main device and connector information.

Are active test, coding, and programming the same operations for Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399?

No. In a comparison of Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399, active test commands a supported component to operate; adaptation and coding manage settings within the existing control unit; programming may involve a software or data writing step. Stable vehicle voltage is required for hardware and VCI, as well as for the intended operation.

Are all parts shown in the package image for Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 included in the box?

Optional modules or different packages may be shown in the same frame in manufacturer images for Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399. For each product in the comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399, the main device, VCI, cables, adapters, power supply, and carrying equipment to be delivered are specified in their respective box content lists.

How are the update and license periods for Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 compared?

For Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399, the included update period, renewal method, device account, serial number, and account region are examined separately. The comparison page for Thinktool Expert 191, 195, 391, 394 AI, and 399 does not transfer promotions from other countries to the Turkish package; the current conditions of the purchased product are shown on the respective product page.

Where are the current prices for Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 displayed?

Product and update prices for Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 are displayed on their respective product pages according to the package and sales status. The comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399 explains the device type, technical differences, and package structure, rather than fixing an old price.

On which sources is the technical comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399 based?

The features of Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 are obtained from manufacturers' official product pages, catalogs, vehicle and function lists, and software documentation. The sources for the comparison of Thinktool Expert 191, 195, 391, 394 AI, and 399 are listed in the technical resources section at the end of the page. Any claim not found in the official source for Thinktool Expert 191 Diagnostic Tool, Thinktool Expert 195, Thinktool Expert 391, Thinktool Expert 394 AI, and Thinktool Expert 399 is not added to the technical table.

Related pages

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Technical Resources

Sources for technical information

Technical information verified with sources on July 23, 2026.

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