NHTSA Office of Defects Investigation
Engineering Analysis EA98-010: HEADLIGHT CIRCUIT
- Closed
NHTSA's Office of Defects Investigation opened Engineering Analysis EA98-010 on May 8, 1998 and closed it on December 10, 1999. NHTSA's investigations file lists 3 Dodge models for it and links recall 99V-024 to it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- EA98-010 (also written EA98010)
- Investigation type
- Engineering Analysis A more detailed stage of a defect investigation, opened when NHTSA's Office of Defects Investigation decides an issue merits further review, often after a Preliminary Evaluation or a Recall Query; it can include vehicle testing, surveys and further information requests.
- Status
- Closed December 10, 1999
- Opened
- Closed
- Vehicle or equipment manufacturer
- Chrysler (FCA US, LLC)
- Component
- Exterior Lighting
- Recall linked by NHTSA
- 99V-024: DAIMLERCHRYSLER/HEADLAMP SWITCH, reported
- Vehicles and equipment
- 3 Dodge models, including the Ram 1500 and Ram 2500
NHTSA's summary
As NHTSA's Office of Defects Investigation wrote it for Engineering Analysis EA98-010.
THE HEADLAMP SWITCH IN THE SUBJECT VEHICLES CAN OVER-HEAT AND FAIL RESULTING IN LOSS OF HEAD LAMPS AND POSSIBLY OTHER LIGHTS.DAIMLERCHRYSLER CONDUCTED A SERIES OF TESTS AND DETERMINED THAT THE 3500 SERIES IS PRONE TO GENERATING HEAD LAMP SWITCH TEMPERATURES IN EXCESS OF THE SWITCH LUBRICANT THRESHOLD OF 100 DEGREES CENTIGRADE.WHEN THIS OCCURS, THE LUBRICANT SOLIDIFIES AND ADHERES TO THE SWITCH CONTACH SURFACES INCREASING INTERNAL RESISTANCE AND THERFORE, TEMPERATURE.DAIMLERCHRYSLER INFORMED THE NHTSA THAT IT WOULD INITIATE A RECALL OF 79,3665 MODEL YEAR 1994-1997 DODGE 3500 SERIES RAM TRUCKS ONLY BASED ON ADDITIONAL TESTING FROM WHICH IT DETERMINED THAT THE 1500/2500 SERIES VEHICLES NOMINALLY OPERATE SIGNIFICANTLY BELOW THE TEMPERATURE THRESHOLD OF THE SWITCH LUBRICANT.OWNERS OF 1500/2500 SERIES TRUCKS WERE SENT A NOTIFICATION LETTER ADVISING OF THE PROPER METHODS FOR ADDING AFTERMARKET LIGHTING ACCESSORIES.
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Engineering Analysis EA98-010. 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.
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.
Dodge VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for EA98-010
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.