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Has anyone used the mini VCI J2534 OBD2 diagnostic tool code reader for lexus toyota from techstream and been successful with it in a 1999 Lexus LS400.  Thanks 

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I think you need to read this Topic.
It looks like Lexus did not fully implement "Standard" ODB2 until the LS430.
Even though the later LS400s have the same connector, they use DLC3 protocol , not ODB2.


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