I have an Sr50 Ditech Aprilch of 2006, the second revision does not pass it through the "Official Workshop" and I have in the control panel the symbol of "Averia (the drawing of the key) ... I understand that it can be reset so that it does not appear.
First of all you have to read what you break down and this you only do with a Scaner, and you can only erase the light if you fix the failure, unless it is a soulless failure, but what the Lus says does not turn on for anything.