NHTSA Office of Defects Investigation
Preliminary Evaluation PE15-005: Loss of Windshield Wiper Function
- Closed
NHTSA's Office of Defects Investigation opened Preliminary Evaluation PE15-005 on February 27, 2015 and closed it on March 26, 2016. NHTSA's investigations file lists the 2014 Stallion 900 for it and links recall 16V-152 to it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- PE15-005 (also written PE15005)
- Investigation type
- Preliminary Evaluation The first stage of most defect investigations: NHTSA's Office of Defects Investigation gathers basic information about a possible safety defect, including from the manufacturer.
- Status
- Closed March 26, 2016
- Opened
- Closed
- Vehicle or equipment manufacturer
- Stallion Bus And Transit Corp.
- Components
- Visibility/Wiper; Visibility — Windshield Wiper/Washer; Visibility — Windshield Wiper/Washer — Linkages; Visibility — Windshield Wiper/Washer — Motor; Visibility — Windshield Wiper/Washer — Switch/Wiring
- Recall linked by NHTSA
- 16V-152: Wipers May Become Inoperative, reported
- Vehicles and equipment
- 2014 Stallion 900
NHTSA's summary
As NHTSA's Office of Defects Investigation wrote it for Preliminary Evaluation PE15-005.
On February 27th, 2015 the Office of Defects Investigations (ODI) opened this Preliminary Evaluation (PE15-005) to investigate multiple incidents of windshield wiper electrical system failures on Stallion 900 series motor coaches manufactured by Stallion Bus and Transit Corporation.
It was reported to ODI that wipers would stop operating when the wiper motor changed speeds, and would not function again until the bus is powered down and restarted.
During the investigation, the manufacturer found that the 12 to 24 volt power converter in the subject vehicle's wiper system could erroneously shut off when the wiper speed is changed.
An over-current or voltage protection circuit of the power converter is erroneously activated.
To remedy this defect the manufacture is modifying the 12 volt power-up converter to have the over-current protection and the voltage protection removed from the Power Control Buss.
All vehicles built after these units would use a power converter supplied by a different manufacturer, or a modified converter with the protection circuits disabled. With the recall action 16V-152 taken by Stallion this investigation is closed as further use of agency resources does not appear to be warranted.
The ODI reports cited above can be reviewed at: http://www-odi.nhtsa.dot.gov/owners/SearchNHTSAID using the following complaint identification numbers: 10630768, 10631041, 10633220, 10633236, 10632428, 10633201, 10633222, 10631019, 10631028, 10632409, 10632414
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Preliminary Evaluation PE15-005. A listed model year means only that an investigation names it; it says nothing about any particular vehicle. Model years with a try.vin recall page link to that page's NHTSA investigations section.
Stallion
Stallion 900
What an NHTSA investigation is
NHTSA's Office of Defects Investigation (ODI) looks into possible safety defects in vehicles and equipment, often after owner complaints. An investigation usually starts as a Preliminary Evaluation, or as a Recall Query when it concerns whether an existing recall covers the right vehicles or fixes the problem, and ODI can upgrade it to a more detailed Engineering Analysis. A Defect Petition asks NHTSA to open an investigation, and Audit and Equipment Queries are administrative investigations into whether companies complied with federal vehicle safety requirements, such as reporting, recall and certification rules.
An open investigation is not a finding that a safety defect exists, and NHTSA can close one without a recall.
To see whether a specific vehicle has an open recall, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for PE15-005
Investigation details come from NHTSA's investigations file, which try.vin imports once a day. The investigation types are described from the U.S. Department of Transportation Inspector General's May 2023 report on NHTSA's Office of Defects Investigation, NHTSA's petition rules (49 CFR Parts 552 and 557) and NHTSA's Office of Defects Investigation procedures. How try.vin reads NHTSA investigations.