The defect
DURING THE REMOVAL AND INSTALLATION OF THE AIR FILTER HOUSING WHILE SERVICING THE VEHICLE, IT IS POSSIBLE TO MISROUTE THE PREFORMED VACUUM HOSE AND DAMAGE THE CHECK VALVE IN THE VACUUM HOSE. IF THE CHECK VALVE IS DAMAGED, LOSS OF SUFFICIENT BRAKE POWER ASSIST WILL OCCUR.
The risk
LACK OF SUFFICIENT BRAKE POWER ASSIST WILL INCREASESTOPPING DISTANCE AND COULD RESULT IN A VEHICLE ACCIDENT.
The remedy
REPLACE THE PREFORMED VACUUM HOSE WITH A NEWLY DESIGNED PREFORMED HOSE WITH A RELOCATED CHECK VALVE WHICH WILL ELIMINATE THE POSSIBILITY OF THE CHECK VALVE BEING DAMAGED.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mercedes-Benz 500SL | 1990, 1991, 1992 |
Components: SERVICE BRAKES, HYDRAULIC:POWER ASSIST
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mercedes-Benz 500SL | 1990 | 3 | 1 |
| Mercedes-Benz 500SL | 1991 | 3 | 1 |
| Mercedes-Benz 500SL | 1992 | 5 | 1 |
Other service brakes, hydraulic recalls in 1993
20 of the 223 recall campaigns reported to NHTSA in 1993 concerned the service brakes, hydraulic; MERCEDES-BENZ USA, INC. filed 61 campaigns in all.
| 93V214000 14 Dec 1993 | GENERAL MOTORS CORP. |
| 93V205000 7 Dec 1993 | PORSCHE CARS N.A. INC. |
| 93V188000 12 Nov 1993 | INTERNATIONAL TRUCK AND ENGINE |
| 93V171000 19 Oct 1993 | GENERAL MOTORS CORP. |
| 93V156000 24 Sept 1993 | CARPENTER INDUSTRIES, INC. |
| 93V152000 15 Sept 1993 | GENERAL MOTORS CORP. |
| 93V146000 13 Sept 1993 | FORD MOTOR COMPANY |
| 93V141000 26 Aug 1993 | CRANE CARRIER COMPANY |
NHTSA recalls (public domain) · all recalls of 1993