i hooked the battery wrong on this car and now the key wont turn on and i hear on 2005 Mercedes-Benz C230

i hear some that is on at the left side of engine and with the battery hooked up the lights are on

Asked by for the 2005 Mercedes-Benz C230
1 answer
you may have blown a module tow it in and have it ck'd b4 other issue arise