Hello together I have 2 problems, V70 Bj 97 2,5 I got Brig Diag on Volvo forum, first to delete the service lamp (should actually go or?) and second to read out the error memory, my SRS lamp lights permanently. 1. Chassis number entered, COM3 selected, unfortunately comes the display “Control unit does not answer” I forgot what? I don’t know yet sooo, am in terms of error reading absolute beginner 2. When I read out SRS spitck if he makes the mistake 1-2-7, how do I have to proceed now? many greetings