ON I-66W VEHICLE LOST ENGINE POWER AT HIGHWAY SPEED. DISPLAYED STOP SAFELY NOW AND MASTER VEHICLE ELECTRICAL HAZARD WARNING LAMP. THE INCIDENT WAS EXTREMELY HARROWING FOR THE DRIVER AS THE POWER CUTOFF WAS UNEXPECTED AND IMMEDIATE. COASTED TO SHOULDER. A RESTART, PER THE OWNER MANUAL, WAS ATTEMPTED BUT DID NOT WORK. TRANSPO…
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ON I-66W VEHICLE LOST ENGINE POWER AT HIGHWAY SPEED. DISPLAYED STOP SAFELY NOW AND MASTER VEHICLE ELECTRICAL HAZARD WARNING LAMP. THE INCIDENT WAS EXTREMELY HARROWING FOR THE DRIVER AS THE POWER CUTOFF WAS UNEXPECTED AND IMMEDIATE. COASTED TO SHOULDER. A RESTART, PER THE OWNER MANUAL, WAS ATTEMPTED BUT DID NOT WORK. TRANSPORTED ON FLATBED TO FORD DEALERSHIP. DEALERSHIP STATED HYBRID BATTERY HARNESS, HYBRID COOLING FANS, AND THROTTLE BODY NEEDED TO BE REPLACED AND PCM REPROGRAMMED FOR $1900 TO 'FIX ISSUE. OWNER REQUESTED A NEW 12V FRONT BATTERY AND WARNING CEASED. OWNER DECIDED TO DO SOME RESEARCH AND TEST DRIVE SHORT DISTANCES. ON 5/24 THE ENGINE CUT OFF IN AN OFFICE PARKING LOT. VEHICLE WAS ABLE TO BE RESTARTED AND GO 4 MILES BACK TO RESIDENCE AFTER THE CARPET COVERING THE HYBRID BATTERY WAS PULLED UP AND THE CABIN A/C TURNED TO HIGH IN AN EFFORT TO COOL THE BATTERY AREA (IT DID NOT FEEL HOT BUT THE OWNER BELIEVED IF A TEMP READING WAS THE CAUSE A FEW DEGREES COOLER MIGHT HELP). A WEALTH OF INFO WAS FOUND INDICATING THIS WAS A KNOWN PROBLEM AND HAD MULTIPLE FORD TECHNICAL SERVICE BULLETINS ISSUED (09-18-6 SEP 09 HYBRID SYSTEMS - RED TRIANGLE ON/DTC P0A27 SET'). THE OWNER COMPILED A LIST OF 88 COMPLAINT NUMBERS ON THE NHTSA SITE THAT INDICATE SUBSTANTIALLY SIMILAR EXPERIENCES FROM 2005-2008 FORD ESCAPE HYBRID / MERCURY MARINER HYBRID OWNERS. BELIEVE ROOT CAUSE IS A DESIGN FLAW IN THE PCM S/W THAT REMOVES ENGINE POWER WHEN A MINOR DEVIATION FROM THE NOMINAL BATTERY TEMP RANGE IS SENSED. LIKELY CONTRIBUTING ISSUE IS A POORLY DESIGNED HYBRID BATTERY COOLING SYSTEM (BATTERY HARNESS, BATTERY COOLING FANS, MEC PUMP, BLEND DOOR, RELAYS). THE NHTSA IS URGED TO OPEN AN INVESTIGATION INTO THE STOP SAFELY NOW/MASTER VEHICLE ELECTRICAL HAZARD ENGINE SHUTDOWNS. VEHICLE IS NOT REPAIRED AND CAN BE MADE AVAILABLE FOR INSPECTION. *TR
NHTSA ODI #10460214
Official recalls
0
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NHTSA investigations
1
DP22005 · Pedestrian Alert Sounds
Opened Jan 27, 2023 · Closed Aug 7, 2023
Status: closed (inferred from source dates) · Electrical System:propulsion System
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.
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