Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 1 of 2 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Air Bags. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Latches/locks/linkages. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Service Brakes, Hydraulic. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
1 crash reports0 fire reports0 injury reports
What owners actually said
2 reports
Mileage unknown · May 21, 2012
Latches/locks/linkages
THERE ARE NO CHILD SAFETY LOCKS ON THE REAR DOORS. THE MANUFACTURER SEEMS TO THINK THE FACT THAT THE DOOR LOCKS ONCE THE CAR IS MOVING OVER A SPECIFIC SPEED IS GOOD ENOUGH, THE PROBLEM IS A CHILD CAN STILL PULL THE HANDLE TWICE TO OPEN THE DOOR WHILE IT'S MOVING, OR SIMPLY LIFT THE REAR LOCK LATCH AND PULL THE DOOR HANDLE ONCE,…
Read full complaint
THERE ARE NO CHILD SAFETY LOCKS ON THE REAR DOORS. THE MANUFACTURER SEEMS TO THINK THE FACT THAT THE DOOR LOCKS ONCE THE CAR IS MOVING OVER A SPECIFIC SPEED IS GOOD ENOUGH, THE PROBLEM IS A CHILD CAN STILL PULL THE HANDLE TWICE TO OPEN THE DOOR WHILE IT'S MOVING, OR SIMPLY LIFT THE REAR LOCK LATCH AND PULL THE DOOR HANDLE ONCE, AND OUT THEY KID GOES AT HIGHWAY SPEEDS. I PERSONALLY DON'T UNDERSTAND HOW THE MANUFACTURER COULD GET AWAY WITH SELLING THIS CAR WITHOUT THIS MOST BASIC SAFETY FEATURE FOR CHILDREN'S PROTECTION. EITHER WE WAIT UNTIL SOME KIDS FLY OUT THIS CAR BEFORE ACTING, OR FORCE THE MANUFACTURER TO COME UP WITH A SOLUTION TO THIS SAFETY HAZARD. *TT
NHTSA ODI #10459075
8,000 miles · Aug 16, 2010
Air BagsService Brakes, HydraulicCrash
TL* THE CONTACT OWNS A 2009 MERCEDES BENZ S CLASS. THE CONTACT WAS DRIVING 55 MPH WHEN A VEHICLE AHEAD OF HIM ABRUPTLY STOPPED. THE CONTACT APPLIED THE BRAKES AS THE PEDAL WAS APPLIED DOWN TO THE FLOORBOARD AND REMAINED. THE CONTACT WAS UNABLE TO RELEASE THE BRAKE PEDAL AND CRASHED INTO THE PRECEDING VEHICLE. THE FRONTAL AIR BAG…
Read full complaint
TL* THE CONTACT OWNS A 2009 MERCEDES BENZ S CLASS. THE CONTACT WAS DRIVING 55 MPH WHEN A VEHICLE AHEAD OF HIM ABRUPTLY STOPPED. THE CONTACT APPLIED THE BRAKES AS THE PEDAL WAS APPLIED DOWN TO THE FLOORBOARD AND REMAINED. THE CONTACT WAS UNABLE TO RELEASE THE BRAKE PEDAL AND CRASHED INTO THE PRECEDING VEHICLE. THE FRONTAL AIR BAGS DID NOT DEPLOY AND THE SOS SYSTEM DID NOT ENGAGE. THERE WERE NO REPORTED INJURIES. A POLICE REPORT WAS AVAILABLE (SP1L15000802). THE VEHICLE WAS TOWED TO A LOCAL REPAIR FACILITY. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE AND THE CURRENT MILEAGES WERE 8,000.
MERCEDES BENZ IS RECALLING 54 MY 2009 S-CLASS, W221 VEHICLES. DURING PRODUCTION THE FRONT AND REAR PASSENGER SIDE DOOR LOCKS MAY HAVE BEEN MISTAKENLY INTERCHANGED DURING PRODUCTION. THE EXCHANGE OF A FRONT AND A REAR PASSENGER SIDE DOOR LOCK WOULD RESULT IN A PASSENGER SIDE DOOR THAT CANNOT BE OPENED BY MERELY PULLING ON THE INTERIOR HANDLE AND A REAR DOOR LOCK THAT CAN BE OPENED WITH A SIMPLE PULL OF THE INTERIOR DOOR HANDLE EVEN IF LOCKED.
Consequence & remedy
Consequence: THIS SITUATION COULD AFFECT THE SAFE EXITING OF A VEHICLE IN THE EVENT OF A CRASH OR PROTECTION OF CHILDREN FROM INADVERTENT OPENING OF THE REAR DOOR.
Remedy: DEALERS WILL CHECK THE PART NUMBER ON ALL DOOR LOCKS AND REPLACE ANY INCORRECTLY INSTALLED DOOR LOCK FREE OF CHARGE. THE RECALL BEGAN ON MARCH 27, 2009. OWNERS MAY CONTACT MERCEDES BENZ AT 1-800-367-6372.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
2009 Mercedes Benz S Class Problems, Complaints & Recalls | Skip That Year
Illustration