NHTSA safety investigation
NHTSA Investigation EA02036
Engineering Analysis · FREIGHTLINER LLC · SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
An investigation is not a finding that a defect exists.
NHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
What NHTSA is examining
The agency's own description of the inquiry, quoted as published
ABS CORROSION EXTENDS STOPPING DIST
THE TONE RING TOOTH PROFILE OF AN UNCOATED HYDRAULIC DISC BRAKE DEGRADES AFTER EXPOSURE TO CORROSIVE ENVIRONMENTS.WHEN THE TONE RING TOOTH PROFILE HAS DEGRADED IN FREIGHTLINER VEHICLES, THE ABS WARNING LIGHT ILLUMINATES RELIABLY TO WARN THE OPERATOR TO HAVE THE ABS SYSTEM SERVICED.IN RESPONSE TO ODI'S INQUIRY, FREIGHTLINER HAS ISSUED INFORMATION TO ALL AFFECTED OWNERS THAT ALERTS OWNERS TO THE IMPORTANCE OF RESPONDING TO THE ILLUMINATED ABS WARNING LIGHT.FREIGHTLINER ADOPTED COATED ROTORS DURING 2002 (DATE VARIES BY MODEL). SINCE NEITHER ODI NOR FREIGHTLINER HAVE ACCURATE DATA TO FORECAST THE CORROSION RESISTANCE OF COATED ROTORS, ODI PLANS TO CONDUCT A FUTURE SURVEY AT FREIGHTLINER (IN 18-24 MONTHS) TO EVALUATE THE DURABILITY OF THE COATED ROTORS.
An investigation is a separate record from a recall and from a manufacturer communication. A manufacturer campaign to repair a safety defect or a failure to meet a federal safety standard.
Investigation details
Identifiers, dates and outcome as recorded by NHTSA
- Action number
- EA02036
- Investigation type
- Engineering Analysis (EA)
- Status
- Closed
- Manufacturer
- FREIGHTLINER LLC
- Component
- SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
- Opened
- Dec 11, 2002
- Closed
- Jan 26, 2004
- Associated recall campaign
- None recorded
Vehicles named in this investigation
9 model years across 2 models
Being named here means NHTSA included the vehicle in the scope of its inquiry. It is not a statement that these vehicles have a defect.