General Information

Crewe-Diagnostics offers Diagnostic Services & Support for all Bentley (and past Rolls-Royce) motor cars. The term Diagnostics covers for Crewe-Diagnostics everything which is reported to the driver by an electrical (lamp) signal.
The Services & Support are divided into the following categories:

  • Off-Board Diagnostics
    The Sensor, ECU and/or Actuator are analyzed without having the vehicle connected. Traditionally this way of diagnostics was very common, but by new Bentley’s (> 2003MY) this not so common anymore due the networked interfaces between the electrical components.


  • Simulated On-Board Diagnostics
    The Sensor, ECU and/or Actuator are analyzed without having the vehicle connected, but instead the in-vehicle network is (partly) simulated at Crewe-Diagnostics. This way of working is in some cases very useful in the situation that there is no vehicle available, but is limited to single component analyzes and is not covering the full system for analyzes.


  • On-Board Diagnostics
    The Sensor, ECU and/or Actuator are analyzed having the vehicle connected and covers the full system for analyzing. In case it is not possible to have the vehicle at Crewe-Diagnostics or Crewe-Diagnostics works at the customer location, a remote-desktop connection can be created in special cases with support from the customer at location.

For more information, please Contact Us.


Procedure & Tools

Crewe-Diagnostic uses initially the Bentley-Specific diagnostic tools, containing a Brand-Specific (Bentley Diagnostics) interface and the standardized OBD/OBDII/EOBD interface.

Bentley Diagnostic Scantool (Protocols: SAEJ2284 CAN, ISO9141-2, ISO14230-4, SAEJ1850 PWM, SAEJ1850 VPW)


Bentley Diagnostics Software


Bentley (and Rolls-Royce) Component Test-Boxes


Bentley Hydraulic System Analyzer



Bentley/VW VAS6150B





The use of general diagnostic tools can be really limited depending on the type of problem. To start a more advanced diagnostic strategy, Crewe-Diagnostics is able to access the in-vehicle network (CAN, LIN, FlexRay, Ethernet, Most) directly.

Vector CANAnalyzer/CANape/CANoe software tools for CAN/LIN/FlexRay/MOST



In special cases, Crewe-Diagnostics is able to equip a Bentley (or past Rolls-Royce) with specific measurement devices which saves relevant information during a road test.

Special measurement equipment and acquisition software available at Crewe-Diagnostics






For more information, please Contact Us