Automatic Emergency Braking ErrorsOpen
On May 26, 2023, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE23010) to assess reports of false positive activation of the Automatic Emergency Braking (AEB) system in model year (MY) 2017-2022 Daimler Trucks North America (DTNA) vehicles. The reports alleged that activation of the AEB system occurred while driving with no apparent obstruction in the vehicle's forward path, resulting in sudden vehicle deceleration. DTNA indicated that it received of a total of 315 reports that may relate to the alleged defect in MY 2017-2022 DTNA vehicles. DTNA stated that the vast majority of false positive activation of the subject systems occur in very limited durations and result in a five mile per hour deceleration. ODI considered four AEB systems offered by DTNA: Detroit Assurance 2.0, Detroit Assurance 4.0, Detroit Assurance 5.0, and Wabco OnGuard. ODIâs analysis…
EA25006 · opened Oct 23, 2025Automatic Emergency Braking ErrorsClosed
On May 26, 2023, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE23010) to assess reports of false positive activation of the Automatic Emergency Braking (AEB) system in model year (MY) 2017-2022 Daimler Trucks North America (DTNA) vehicles. The reports alleged that activation of the AEB system occurred while driving with no apparent obstruction in the vehicle's forward path, resulting in unexpected and sudden vehicle deceleration. ODI sent an information request letter to DTNA on June 15, 2023.In its September 1, 2023, response, DTNA indicated that it received of a total of 315 reports that may relate to the alleged defect in MY 2017-2022 DTNA vehicles. DTNA stated that the vast majority of false positive activation of the subject systems occur for very limited durations and result in a five mile per hour deceleration. ODI considered four AEB systems…
PE23010 · opened May 26, 2023 · closed Oct 23, 2025Engine Electrical Wiring Harness ChafeClosed
The Office of Defects Investigation (ODI) opened this Preliminary Evaluation to investigate reports of engine electrical wiring harness chafe on the subject vehicles.ODI analysis found thousands of unique harness part numbers, spanning the two generations of vehicle chassis assembled at multiple vehicle assembly plants in two different countries, with multiple sub-models, incorporating over thirty powertrain choices.Each wiring harness could contain several dozen individual wires for power, ground and communication purposes depending on the multitude of equipment options available for custom vehicle configuration. ODI identified three primary areas where a wiring harness bundle may chafe: the air compressor support bracket, the transmission case, or the coolant surge tank. In each case, the root cause was some combination of inadequate design clearance, installation variability and…
PE21004 · opened Feb 25, 2021 · closed Jan 14, 2025SAM Cab Water IntrusionClosed
On August 31, 2020, the Office of Defects Investigation (ODI) opened a recall query, RQ20001, to investigate the allegations of water intrusion into the truck cab signal-detect and activation module (SAM cab).The investigation further evaluated the effectiveness of the original recall remedy, and the installation of an updated drip shield as it relates to continual water intrusion resulting in the loss of electrical functions and potential fire.The potential hazard was the increased risk of a crash and injury in certain model year (MY) 2007-2021 Freightliner Cascadia P3 vehicles manufactured by Daimler Trucks North America (DTNA). ODI sent DTNA an information request (IR) letter on September 29, 2020.DTNA's November 20, 2020, IR response detailed how the company had implemented various improvements through recall 09V024 and multiple technical service bulletins (TSBs) to mitigate water…
RQ20001 · opened Aug 31, 2020 · closed Jun 26, 2025Intermittent Loss of Power Steering AssistClosed
On May 1, 2020, the Office of Defects Investigation (ODI) opened PE20006 to investigate complaints of intermittent loss of power steering assist in Daimler Truck North America (DTNA), Volvo Trucks of North America (Volvo) and PACCAR vehicles equipped with a ZF/TRW (TRW) THP60 steering gear. The investigation focused on 2010-2020 DTNA Freightliner Cascadia, M2 and WST; Volvo VN, VAH and VHD and PACCAR 337, 365, 389, 567, 579 model vehicles.Field reports and interviews with fleet drivers allege that high power steering fluid temperatures could result in internal seal and bearing failures causing pressure fluctuation, affecting left and right-hand turns. The inability of the driver to steer the vehicle as intended can increase the risk of a crash and injury. ODI analyzed data provided by TRW, DTNA, Volvo, and PACCAR in response to individual information request letters.ODI found that…
PE20006 · opened May 1, 2020 · closed Mar 27, 2024Daimler Trucks North America RecallsClosed
On April 23, 2018, the National Highway Traï¬c Safety Administration (âNHTSAâ) opened Audit Query (AQ18002) to assess the timeliness and scope of four recalls ï¬led by Daimler Trucks North America, LLC (âDTNAâ). NHTSA subsequently expanded AQ18002 to examine the timeliness and scope of three additional DTNA recalls and compliance with early warning reporting and manufacturer communications reporting requirements. NHTSA and DTNA entered into a Consent Order on December 29, 2020, to resolve NHTSAâs assertions that certain recalls within the scope of AQ18002 were untimely, DTNA failed to timely submit certain manufacturer communications to NHTSA, and DTNA failed to submit ï¬eld reports to NHTSA as required. As part of the Consent Order, DTNA agreed to a total civil penalty of thirty million dollars ($30,000,000), of which ten million dollars ($10,000,000) was paid on January…
AQ18002 · opened Apr 23, 2018 · closed Jul 11, 2024Steering Arm Capscrew FailuresClosed
The Office of Defects Investigation (ODI) opened this investigation based on one (1) Vehicle Owner Questionnaire (VOQ) and associated Police Accident Report (PAR) that described a crash where the vehicle had a separated steering linkage at one wheel-end as the result of lower steering arm capscrew failures.It was unknown at the time whether the separation caused the crash or was the result of the crash.Recall 15V-613 corrected an under-torque issue in upper steering arm capscrews on these vehicles.ODI opened this Recall Query to assess the scope and remedy of the 15V-613 recall.ODI collected the front axle from the crash vehicle for inspection and sent an Information Request Letter (IR) to Daimler Trucks North America (DTNA).The Vehicle Research and Test Center (VRTC) analyzed the crash truck's front axle.Based on the fracture surfaces of the capscrews and numerous witness marks on the…
RQ17001 · opened Apr 3, 2017 · closed Dec 25, 2017