Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
SB-91-60-193
Service Bulletin/Repair Instructions
MERCEDES: AIRBAG DURABILITY AND RELIABILITY. AIR BAG SRS CONTROL MODULE (N2/2) DOES NOT HAVE A SET SHELF LIFE AND WILL NORMALLY BE RELIABLE FOR THE LIFE OF A VEHICLE. WITH 164, 216 221, 251 AND NEWER, THE AIRBAG CONTROL UNIT CAN BE RESET FIVE TIMES. WITH MODES 202, 210 AND NEWER, THE AIRBAG CONTROL UNIT CAN BE RESET THREE TIMES. EARLIER MODELS WOULD HAVE TO HAVE THEIR AIRBAG CONTROL UNIT AND TRIGGERED RESTRAIN COMPONENTS CHANGED ONLY AFTER AN ACCIDENT. NO MODELS OR MODEL YEARS LISTED. *PE
463040
Service Bulletin/Repair Instructions
FLOW NOISES FROM AREA OF POWER STEERING PUMP AND/OR FOAMING OF POWER STEERING OIL IN RESERVOIR. *TT
424523E
Service Bulletin/Repair Instructions
FAILURE CODES C1140 AND/OR C1145 IN THE ELECTRONIC STABILITY PROGRAM (ESP). *TT THIS BULLETIN REPLACES PREVIOUS VERSION DATED 03/25/03. *TT
70028E
Service Bulletin/Repair Instructions
ENGINE CONTROL UNIT SOFTWARE UPDATE. (MODEL 203 MODEL YEAR 2002 AND LATER, MODEL 170 (SLK320 ONLY) MODEL YEAR 2002 AND LATER, MODEL 230). *JB
070028D
Service Bulletin/Repair Instructions
ENGINE CONTROL UNIT SOFTWARE UPDATE. *TT
070021F
Service Bulletin/Repair Instructions
ENGINE TICKING (PISTON SLAP LIKE SOUND) NOISE WHEN ACCELERATING BETWEEN 1200 AND 3000 RPM. *TT
070028C
Service Bulletin/Repair Instructions
ENGINE CONTROL UNIT SOFTWARE UPDATE. VARIOUS MODELS INCLUDING THE MODEL 230. *TT
543087
Service Bulletin/Repair Instructions
CLOCK IN INSTRUMENT CLUSTER INACCURATE. *TT
070028B
Service Bulletin/Repair Instructions
ENGINE CONTROL UNIT SOFTWARE UPDATE. *TT
PB070028
Service Bulletin/Repair Instructions
SUBJECT REGARDING ENGINE CONTROL UNIT SOFTWARE UPGRADE. (MERCEDES BENZ SLK320, 2002 & 2003, MERCEDES BENZ 230, 2003) *JB