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LAUNCH    Professional 123X User Manual
*Note: To detect more and accurate VINs, a stable network connection is highly 
recommended for this funcon.
*CAUTION: Don’t connect or disconnect any test equipment with ignion on or engine 
running.
A. Once the system successfully obtains the VIN (Vehicle Identication Number) 
information of the currently identified vehicle, it will continue scanning the 
vehicle systems. After the scanning is complete, a diagnostic report will be 
automatically generated and sent to your email box (if bound). 
B. If  the tool  failed to  access the  VIN information, the screen will display as 
below:
Fig. 5-2
  Input the VIN, and tap “OK”, the system will automatically identify the vehicle 
model.  If  the  vehicle  VIN  is  successfully  decoded,  it  will  perform  auto-
diagnosis until a diagnostic report is automatically output. Otherwise it will 
enter manual diagnosis mode. For details on manual diagnosis, see Chapter 
5.2.2.
*Notes: 
•  The most recognizable locaon for this number is in the top le corner on 
the vehicle’s dashboard. Other  locations include the driver’s  door or post, 
and the rewall under the hood. 
•  In general, vehicle identification numbers are standardized - all contain 17 
characters. VIN characters may be capital leers A through Z and numbers 
1 through 0; however, the leers I, O and Q are never used in order to avoid 
mistakes of misreading. No signs or spaces are allowed in the VIN.