If you have problem to use Autocom cdp for trucks, you can check the user manuel and car list. Still problems, please feel free to contact us on Customer service. Notes: 1. Be sure to disable/uninstall anti-virus software Please note,anti-virus software can flag up this item software as having a virus. This is a false positive and is due to the software containing the application file. So Before setup the device software, please disable/uninstall anti-virus software or install a more reliable free virus scanner! Our this item software is completely safe and virus free and all other virus scanners confirm this. If the software data is destroyed or lost because you forget to disable/uninstall anti-virus software, please contact our customer service, we arrange to resend you CD or send you the software via internet. 2. Required windows operation system is windows XP Be sure to setup and run the device software under windows XP. Otherwise the device software and program can be broken or it will fail to work.