I sent My Mercedes s550 ECU computer to fix it, spoke to Chris, nice person at the begining ,
they received my parts and sent it back to me without explantion, I had to call Chris and no
answer, I had to call form diferent number to fianlly, ge tin touch , I expalined to him the the part was
duplicating the same problem, to finally take it to the dealer where they have check it and the diagnostic
was faulty ECU, National Parts AKA Module Experst, never fix my ECU, they charge my $411.25, spoke to
Chris and he just play smart but just been silence and after I finished to explain to him, he just start talking
something else like I never say anythig, I have to call many times to finally get back $285.63, for something
that nerver did, the dealer took me inside the shop to show me the ECU, was nerver open just black glue on the
sides to make me believe they did the job..