LAUNCH    X-431 PRO Series User Manual 
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vehicle’s dashboard. Other locations include the driver’s door or post, and 
the firewall under the hood.
 
•  If you have scanned the VIN of the vehicle, tap    to choose it from 
the record list.   
•  In case the handset failed to identify it, tap    to enter it manually. 
Note: In general, vehicle identification numbers are standardized - all contain 17 
characters. VIN  characters  may  be capital  letters  A  through Z  and  numbers  1 
through  0;  however,  the  letters  I,  O  and  Q  are  never  used  in  order  to  avoid 
mistakes of misreading. No signs or spaces are allowed in the VIN.   
•  To turn the flash on, tap  . 
After scanning, the screen automatically displays the result. 
   
Fig. 5-9 
•  If the VIN scanned is incorrect, tap the result field to modify it and then tap 
“OK”. If the VIN exists on the remote server, the system will enter the 
vehicle information screen. See Fig. 5-5. 
•  To scan it again, tap “REPEAT”. 
5.2 Local Diagnosis 
Tap “Local Diagnosis” to enter the vehicle selection page. Tap a corresponding 
diagnostic software logo, and then follow the on-screen instruction to access the 
diagnostic software.   
Take Demo as an example to demonstrate how to diagnose a vehicle.
 
1). Select diagnostic software version: Tap the “DEMO” to go to Step 2.
 (Note: If 
more than one version is available on this handset, it will be listed on the screen.)