SMART KEYS USED IN AUDI A8 ( D4 )

    Audi "Silver" Key with PCF7945 MCU used in Audi A8 D4 - models since 2011 to about 2016.

    The manufacturer specifies 4H0959754DB, 4H0959754DD, 4H0959754DQ and other 4H0xxx parts number.

    Operating frequency : Keys for the US market generally working on 315MHz, Europe and rest of world : 868MHz.
    In several models you can find 433MHz also ( 4H0959754DB key for example ).

    Transponder chip for all "Silver" Keys for Audi A8 ( D4 ) : PCF7945AC MCU.