How to enter engineering mode in Mercedes COMAND APS NTG 2.5 (hidden secret service menu) HD

Your Mercedes APS NTG 2.5 system have a hidden engineering mode (hidden menu) that gives you access to all kind of useful information about car systems. Turn on the ignition, then press and hold buttons: END CALL, 6 and *. Mercedes-Benz COMAND APS NTG 2.5 system can be found in: A-Class from 06/2008 to 08/2012 B-Class from 06/2008 to 11/2011 CLS from 03/2008 to 01/2011 Viano / Vito from 09/2010 Sprinter from 11/2009 CLC from 03/2008 to 12/2011 G-Class from 09/2008 to 06/2012 SLK from 04/2008 to 03/2011 SL from 04/2008 to 03/2012 E-Class Limousine and T-Modell from 06/2008 to 04/2009 R-Class from 09/2008 M-Class from 09/2008 to 11/2011 GL-Class from 09/2008 to 06/2012 http://mr-fix.pl/ Music by Dan-O at DanoSongs.com