Powerful EV diagnostics for the workshop

Safely diagnosing high-voltage systems
High-voltage systems in electric and hybrid vehicles require special diagnostic technology. With the AUTEL diagnostic devices MS909EV, MSUltraEV and the EV diagnostic upgrade kit, Herth+Buss offers powerful tools for professional use.
Herth+Buss is AUTEL’s official sales partner in the DACH region. The diagnostics portfolio has been specifically expanded to include solutions for electromobility:
- MS909EV
- MSUltraEV
- EV diagnostics upgrade kit (incl. EVDiag Box and vehicle-specific adapters)
These tools analyze high-voltage systems precisely and quickly. The SOC (State of Charge) and SOH (State of Health) of the battery can be read out directly. The devices support the safe repair of battery and high-voltage components. Developed for modern vehicle diagnostics, the focus is on safety, efficiency and user-friendliness.
When is it necessary to use this diagnostic technique?
- When replacing complete batteries or individual cell modules
- For SOC and SOH tests to assess the battery condition
- For troubleshooting in high-voltage systems (from simple to complex)
- After accidents with high-voltage damage
- For safe disconnection of the high-voltage system before repairs
These applications show: Professional EV diagnostics is becoming standard in workshop operations.
Devices in detail: MS909EV, MSUltraEV and the upgrade kit
The two main devices MS909EV and MSUltraEV offer comprehensive diagnostic functions for high-voltage components. The EV diagnostic upgrade kit supplements the systems with additional functions for specific vehicle models. All devices enable fast and detailed analysis of the battery pack. The evaluation is carried out directly via the battery management system (BMS). The vehicle coverage remains broad: Models from Europe, Asia and the USA are supported – whether hybrid or purely electric.
Functional overview of AUTEL EV diagnostic devices
Scope of diagnosis:
- Complete diagnosis of the high-voltage system and its components
- Access to live data and error codes in real time
- Automatic ECU scan of all control units
Vehicle support:
- Over 50 brands from the USA, Asia and Europe
- Focused on marketable electric vehicles
Battery diagnostics:
- Readout of SOC and SOH with high accuracy
- Access to battery data directly via the BMS
- Visualization of the system topology according to manufacturer specifications
Safety aspects:
- Cable and jumper diagrams for safe testing
- System release for safe working on the high-voltage system
Conclusion: Workshops are increasingly faced with the task of diagnosing high-voltage systems safely and precisely. The AUTEL devices MS909EV, MSUltraEV and the upgrade kit offer a professional and reliable solution for this. They enable a complete high-voltage analysis, support numerous vehicle models and meet high safety standards. This makes them a future-proof investment for the growing electromobility market.