BRAKE BOOSTER ACCUMULATOR FAILURE

What NHTSA is examining

In october 2001, mitsubishi notified the agency that it would conduct a safety recall (nhtsa recall no. 01v-254) to remedy a defect condition that could result in a leak of pressurized nitrogen gas from the hydraulic brake booster accumulator in approximately 39,000 model years (my) 2001-2002 mitsubishi montero vehicles produced from december 12, 1999 through june 20, 2001. According to mitsubishi, the accumulator that is installed on the hydraulic brake booster may have been manufactured improperly, which over a period of time may result in leakage of the pressurized nitrogen gas from inside the accumulator. The loss of this gas pressure may result in an abnormal noise from the left side of the dash panel when the brakes are applied, and possibly a delayed first time brake boost assist after the vehicle has been parked for a period of time.during rq06-007, mitsubishi indicated that the decision to conduct recall 01v-254 was based on projected failure rates of 36.5% within 2-years of service and 100% in the first 4-years of service. The office of defects investigation (odi) opened rq06-007 based on six complaints of hydraulic brake booster accumulator failure in the approximately 23,335 my 2002 montero vehicles that were built after the vehicles recalled in 01v-254.one of the complaints alleged that the failure resulted in a crash.during the investigation, odi identified 20 consumer complaints and 58 warranty claims related to brake booster accumulator failure in the subject…

Vehicles under investigation