general problems of the 2001 Mercedes Benz S430

2 days after receiving my 2001 S430 from local dealer (critz benz of savannah) for service that was done incorrectly. I notice while driving the burned out odor coming the air vents. I noticed my instrument cluster lighting start to flicker as I was driving but thought nothing of it. The next day however while entering the vehicle I noticed no lights were on the dashboard what so ever, it was taken back to local dealer to be diagnosed. Wanted to let you know that we found your instrument cluster completely shorted out. It seems to be some form of internal electrical fault. Would have to have the instrument cluster replaced. Parts and labor together is $1905. 60 to replace it. I ask about the recall on this part they said my car was not included. Vehicle has 188,xxx miles on it. Ive also had both airbags replaced within 3 months and one which experiencing the same issue that I paid them to fix which was and out of place strut or �another leak� in a practically new airbag can I please have some assistance. --colby pearce critz auto group.