NHTSA investigation into 2000 Brake Parts MC390275 and MC390337: INCORRECTLY MOLDED MASTER FLOAT CHAMBER
On June 8, 2000, the National Highway Traffic Safety Administration’s Office of Defects Investigation (ODI) opened an investigation (SQ00010) into 2000 Brake Parts MC390275 and MC390337, concerning the service brakes, hydraulic. As of NHTSA’s latest data it is still open.
- Action
- SQ00010 (Investigation)
- Status
- Open
- Component
- Service Brakes, Hydraulic
- Listed
- 2 make/model/year entries in NHTSA’s file
Vehicles under investigation
| Make | Brake Parts |
|---|---|
| Models | MC390275, MC390337 |
| Model years | 2000 |
As listed in NHTSA’s investigation file. Not every vehicle of a listed model is necessarily affected.
What ODI says
IN APRIL 2000, BRAKE PARTS INC. INITIATED A CUSTOMER NOTIFICATION CAMPAIGN TO ADDRESS CERTAIN BRAKE MASTER CYLINDERS THAT WERE IMPROPERLY MOLDED AND ASKED FOR THEM TO BE RETURNED.THE LETTER IDENTIFIED TWO POSSIBLE CONDITIONS THAT MIGHT OCCUR IF THE MASTER CYLINDER IS OUT OF SPECIFICATION:THE FLOAT CHAMBER MAY NOT FILL WITH BRAKE FLUID CAUSING THE BRAKE WARNING LIGHT TO ILLMINATE, AND THE FLOAT CHAMBER WILL NOT DRAIN BRAKE FLUID UPON DEMAND, CAUSING THE BRAKE WARNING LIGHT TO REMIN OFF WHEN IT SHOULD ILLUMINATE.BOTH SCENARIOS APPEAR TO HAVE SAFETY CONSEQUENCES.THE PURPOSE OF THIS SQ IS TO DETERMINE THE EXTENT OF THE PROBLEM EXPERIENCE, CONSEQUENES, AND IF A SAFETY RECALL IS WARRANTED.
Official summary by NHTSA’s Office of Defects Investigation for SQ00010, quoted in full (U.S. government work, public domain).
Timeline
- ODI opens investigation SQ00010
- OpenNo closing date yet
What this means for owners
- An investigation is not a recall. NHTSA has not made a defect finding here, and owners are not asked to do anything yet. If a safety defect is confirmed, the manufacturer recalls the vehicles and the repair is free.
- Check your vehicle for open recalls with a free VIN recall check.
- Had this problem? File a complaint with NHTSA. Owner complaints are the evidence ODI uses to open and expand investigations.
Official record: search SQ00010 or your vehicle at NHTSA.gov/recalls, which lists investigations alongside recalls. Data: NHTSA ODI investigations file, updated daily. All NHTSA investigations.