Finance

NHTSA closes probe on 313,101 Daimler US trucks over engine wiring concern

Published by Global Banking & Finance Review

Posted on January 15, 2025

1 min read

· Last updated: January 27, 2026

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Daimler truck engine wiring issue investigation closure by NHTSA - Global Banking & Finance Review
Featured image illustrating the NHTSA's closure of its investigation into 313,101 Daimler trucks over engine wiring issues, highlighting safety and engineering concerns in the automotive sector.
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(Reuters) - The National Highway Traffic Safety Administration said on Wednesday it has closed an investigation on Daimler Truck's 313,101 North American vehicles over an engine wiring concern. The

NHTSA Concludes Daimler Truck Probe on Engine Wiring Issues

(Reuters) - The National Highway Traffic Safety Administration said on Wednesday it has closed an investigation on Daimler Truck's 313,101 North American vehicles over an engine wiring concern.

The auto safety regulator had opened the probe, which covered Daimler's Freightliner Cascadia trucks from model years 2017-2021, on reports of engine electrical wiring harness chafe in certain vehicles.

The root cause was a combination of inadequate design clearance installation variability and motion between the wiring harness and the point of contact such as from vibration, it said.

The chafing could result in issues such as diagnostic fault codes, difficult or no engine start condition and reduced power or shut downs.

No safety-related defect trend has been identified, NHTSA said.

(Reporting by Nathan Gomes in Bengaluru; Editing by Shilpi Majumdar)

Key Takeaways

  • NHTSA closed its investigation on Daimler Truck's 313,101 vehicles.
  • The probe focused on engine wiring harness chafe in Freightliner Cascadia trucks.
  • No safety-related defect trend was identified by NHTSA.
  • The issue involved inadequate design clearance and installation variability.
  • The investigation covered model years 2017-2021.

Frequently Asked Questions

What is the main topic?
The main topic is the closure of an NHTSA investigation into Daimler Truck's vehicles over engine wiring concerns.
What vehicles were involved in the probe?
The investigation involved 313,101 Daimler Freightliner Cascadia trucks from model years 2017-2021.
What was the outcome of the investigation?
NHTSA found no safety-related defect trend in the investigated vehicles.

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