TOPIx Cloud Diagnostics (G3447671)

NOTES:

  • TOPIx Cloud Diagnostics covers Jaguar Land Rover (JLR) vehicles from 17MY for Discovery, Range Rover and Range Rover Sport, and 18MY onwards for all other vehicles excluding XJ

  • TOPIx Diagnostic Device Agent (DDA) must be installed for the diagnostics to run

  • For further information on diagnostics installations refer to the following link;

    (Standardised Navigation/6. Vehicle diagnostics).

TOPIx Cloud Diagnostics is always up-to-date, removing the need for constant software installations or updates.

Vehicle Communication

  • When the JLR approved diagnostic equipment is connected to a vehicle and the DDA is started it synchronises with TOPIx to display the vehicle data
  • The Vehicle Data window provides a summary of the vehicle’s module status;
    • Green no Diagnostic Trouble Codes (DTC)
    • Amber DTC
    • Red no response from the module
  • DTC are displayed in the Fault Timeline with a timestamp and odometer value
  • Applications such as Network Integrity Test, Pre-Delivery Inspection and Service Message Reset are in Vehicle Applications
  • To see module specific application look in Module Applications
  • The History toolbox displays previous activities against the vehicle in session
Key Features
  • Diagnostic History
  • Module applications
  • Vehicle applications
  • DTC status

Cybersecurity Diagnostics

A cybersecurity diagnostics feature introduced with the 26MY Defender and 26MY Discovery vehicles in August 2025, enhances the security of onboard diagnostic systems; by restricting diagnostic communication with the vehicle networks until the system is Unlocked by an authorised tester.

The Unlock procedure is integrated into all TOPIx applications. Users will be able to see the vehicle’s Lock status via a padlock icon displayed in the top banner of the TOPIx interface, next to the ‘Ready’ status.

E393956

Padlock Symbol is Green – The connected vehicle is either not Secure Diagnostics enabled, or the module is unlocked.

E393958

Padlock Symbol is Red – The connected vehicle is Secure Diagnostics enabled and the module is locked. The module will be unlocked when an application is executed.

Navigation

  1. Login to TOPIx through the DDA, and connect a vehicle through a Vehicle Communication Interface (VCI). A Network Integrity Test will automatically start.
  2. Select Diagnostics, if not connected to a vehicle diagnostic tests can still be run by entering a Vehicle Identification Number (VIN) on the TOPIx home page, or Model Selection from the vehicle search page.
  3. Select Fault and Breakdown.
NOTE:

For a detailed guide on TOPIx Cloud Diagnostics and its features refer to the following links;

Refer to: Overview (TOPIx Cloud Diagnostics).

Refer to: Troubleshooting Guide (TOPIx Cloud Diagnostics).

Refer to: Download and Installation (TOPIx Cloud Diagnostics).

Refer to: Workflow (TOPIx Cloud Diagnostics).