Lexia 3 Diagbox v7.02 installation and activation error solution

Outils de diagnostic de voitures

One of the Lexia 3 v48 Peugeot Planet PP2000 v25 Diagbox v7.76 interface users came across lexia 3 Diagbox and turn to obd2diy.fr engineer for help. Following are the detail problem and solution provided.


When installing and activating lexia 3 Diagbox software for PSA Peugeot and Citroen, the Lexia 3 interface program display an error message: (display picture below)

There was an AUTHENTIFICATION windows asked to enter the user name and password.



Important: if you do not identify yourself. You will not be able to gain access to the operation requested…Do you wish to access this operation?


Possible reason:

From the software program, we can see that the Diagbox he installed is the 7.02 version. The Diagbox diagnostic software has not been completely installed.


Re-install the Lexia-3 Diagbox software until the installation procedure is completed.

Better suggestion is to upgrade lexia 3 to the current Diagbox v7.76 version.

Here are some related user manuals provided to help to install


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