Month: June 2023

Alternator Positive Cable May Chafe and Cause Fire: PACCAR, Incorporated is recalling certain 2022-2023 Peterbilt 579 vehicles with MX-13 engines and 160-amp alternators

NHTSA Campaign Number: 23V423000

Manufacturer PACCAR Incorporated


Potential Number of Units Affected 4,914


PACCAR, Incorporated (PACCAR) is recalling certain 2022-2023 Peterbilt 579 vehicles equipped with MX-13 engines and 160-amp alternators. A fastener on the front spring bracket may have been installed with the head on the outside of the frame rail, which can chafe and damage the alternator positive cable.


Dealers will replace the frame fastener and secure the alternator cable, free of charge. Owner notification letters are expected to be mailed August 11, 2023. Owners may contact Peterbilt’s customer service at 1-940-591-4220. PACCAR’s number for this recall is 23PBD.

Engine Failure May Cause Fire: Ford Motor Company (Ford) is recalling certain 2020-2023 Escape, 2022-2023 Maverick, and 2021-2023 Corsair vehicles

NHTSA Campaign Number: 23V380000

Manufacturer Ford Motor Company

Components ENGINE

Potential Number of Units Affected 125,322


Ford Motor Company (Ford) is recalling certain 2020-2023 Escape, 2022-2023 Maverick, and 2021-2023 Corsair vehicles equipped with 2.5L HEV or PHEV engines. In the event of an engine failure, engine oil and fuel vapor may be released into the engine compartment and accumulate near ignition sources such as hot engine or exhaust components, possibly resulting in an engine compartment fire.


Owners are advised to park and shut off the engine as quickly as possible if they hear unexpected engine noises, notice a reduction in vehicle power, or see smoke. The remedy is currently under development. Letters notifying owners of the safety risk are expected to be mailed June 12, 2023. Second letters will be mailed once the remedy is available. Owners may contact Ford customer service at 1-866-436-7332. Ford’s number for this recall is 23S27. This recall expands and replaces recall number 22V-484. Vehicles previously repaired under 22V-484 will need to have the new remedy completed.


Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to

Solar Panel Testing – June 2023

Solar panel testing 

Solar power generation has gained popularity in recent years. These days, solar panels seem to be everywhere. According to the Energy Information Administration, U.S. developers plan to add 54.5 gigawatts (GW) of new electric generating capacity in 2023, with more than half being powered by solar energy.1

We see solar panels attached to residential and commercial roofs, road signs, electric vehicle charging stations, billboards, weather stations, pump houses, and of course, large arrays at solar farms. Sometimes solar panels are small and provide electrical energy to power a single component, whereas solar farms can have 1,000s of panels mounted together to supply power to our electric grid. One thing all solar panels have in common…they can be struck by hail. 

The panels above were impacted by hailstones measuring about two inches in diameter; about 10% of the panels were damaged.

With all the solar power in use today, and with an increasing number of solar panels in hot sunny climates such as the southwestern United States, it is inevitable that more solar panels are going to be struck by hail each year. There has been an enormous amount of research into the minimum size of hail able to damage roof coverings, but information on hail-caused damage to solar panels is somewhat limited.

Haag Research & Testing (HRT) is working to change that. HRT is constantly looking for testing protocols that can add to our forensic testing ability and the knowledgebase of our industry. The Haag laboratory has recently added several test methods to our list of accredited test standards. Two of these test standards address hail impact performance of solar panels. HRT is now accredited to perform Factory Mutual (FM) 4478 – Appendix E, and IEC 61215-2 (MQT 17). Both of these standards are followed to provide impact ratings for solar panels and the procedures can be adapted for forensic use to determine what minimum size of hail can damage solar panels.

Haag engineers can inspect solar panels for hail-caused damage and offer opinions regarding the extent of damage and repairability concerns. Our laboratory can perform simulated hail impact testing on solar panels either removed from an inspected property or new panels acquired from distributors. Our unique ability not only to perform post hail inspections, but also perform simulated hail impact testing is what sets Haag apart from others in our industry, not only for roofing damage assessment, but for damage assessment of other items, including building components, cladding, vehicles, and yes, even solar panels.   

Questions about solar panel testing or solar panel damage assessment? Please contact Haag here or call us at 800-527-0168 with questions.

1.       “Solar to dominate new U.S. electric-generating capacity in 2023, EIA says”. Harshit Verma and Brijesh Patel, Feb. 6, 2023.


Steve Smith, P.E., Director of Research & Testing, Principal Engineer

Steven R. Smith is a Forensic Engineer with Haag Engineering Co., and the Director of Research & Testing. Mr. Smith is an experienced forensic engineer who began his career with Haag more than 24 years ago. He spent seven years working as a Senior Lab Technician while earning a Bachelor of Science in Mechanical Engineering degree from The University of Texas at Arlington. He has been involved with the lab throughout his career, and has been able to leverage his extensive and practical engineering field experience with research and testing projects.

Mr. Smith’s areas of expertise include accident reconstruction, mechanical equipment evaluations, code and standards compliance, roofing system evaluations, and fires and explosions. He is a licensed Professional Engineer in Arkansas, Minnesota, Missouri, Oklahoma, Texas, and Wisconsin. He is a member of the American Society of Mechanical Engineers (ASME), Society of Automotive Engineers (SAE), and Pi Tau Sigma National Honor Society. Prior to joining Haag, Mr. Smith was a Petty Officer Second Class in the United States Navy. He trained at the Navy Nuclear Power Training Command Center in Orlando Florida and was stationed on the USS Arkansas (CGN-41), where he maintained reactor and steam plant chemistry, performed radiological controls, and operated mechanical equipment in the propulsion plant.


Any opinions expressed herein are those of the author(s) and do not necessarily reflect those of Haag Technical Services, Haag Engineering Co., Haag Education, or parent company, Haag Global, Inc.

High-Voltage Battery May Overheat: Jaguar Land Rover North America, LLC (Jaguar) is recalling certain 2019-2024 Jaguar I-PACE vehicles

NHTSA Campaign Number: 23V369000

Manufacturer Jaguar Land Rover North America, LLC


Potential Number of Units Affected 6,367


Jaguar Land Rover North America, LLC (Jaguar) is recalling certain 2019-2024 Jaguar I-PACE vehicles. The high-voltage battery may overheat.


The battery energy control module software will be updated by a dealer, or through an over-the-air (OTA) update. In addition, battery modules will be replaced as necessary. Repairs will be performed free of charge. Owner notification letters are expected to be mailed July 21, 2023. Owners may contact Jaguar’s customer service at 1-800-452-4827. Jaguar’s number for this recall is H441.