Re: Factory Alarm Chirp! Solved! Read!!!
Amazon is your one-stop supplier for this mod: The Mercedes part A219 820 3226 is in stock, at about $140 as of this date. The Torx tamper-proof drivers are in a great set of bits and drivers, Neiko 10048A, around $12, and the ABN 3 inch gear puller is around $12. We all have metric socket sets, don't we? 
Last edited by ambidextrous; Feb 8, 2019 at 11:36 PM.