Ram HD 6.7L Cummins Turbo Diesel Recalled to Prevent Engine Compartment Fire

On February 17th, the peeps at Fiat Chrysler opened an investigation into the 2021 model year Ram 2500, 3500, 4500, and 5500 due to “a detected trend of engine compartment fires.” The company determined that all of the affected vehicles were fitted with a solid-state intake heater grid relay, the origin of the fires. A safety recall was announced in March, but alas, FCA became aware of a fire in a truck with a protected relay in May.
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Fiat Chrysler Automobiles and the SSIHGR supplier, German company Eberspaecher Controls, continued to conduct root cause analysis. Come September, and the automaker became aware of seven additional fires in vehicles with a protected relay. Fortunately for everyone involved, Ram is aware of zero accidents and zero injuries potentially related to this issue.

Even though a fix is under development because the root cause remains unknown, FCA will conduct a callback on December 3rd. According to documents filed with the National Highway Traffic Safety Administration, that's also the date when authorized retailers will be informed of the remedy procedure. In the meantime, heavy-duty truck customers are advised: "not to park these vehicles inside of buildings, structures, or near other vehicles."

A total of 131,177 units of the 2021 and 2022 Ram HD with the 6.7-liter Cummins turbo diesel straight-six engine are called back. Of those, 67,597 units come in the guise of the Ram 2500. The remaining population consists of 39,324 examples of the 3500 workhorse, 7,317 examples of the 3500 cab chassis, as well as 16,939 units of the 4500 and 5500 in cab-chassis form.

According to Fiat Chrysler’s truck-making division, the suspect period began on August 3rd, 2020 when production of the SSIHGR-equipped 2500 began. The suspect period ended earlier this month on Friday, October 8th.

Priced from $36,350 and $37,815 excluding taxes, the Ram HD lineup is topped by the high-output Cummins turbo diesel that rocks 420 horsepower and a simply ludicrous 1,075 pound-foot (1,458 Nm) of torque. The 6.4-liter HEMI, by comparison, flaunts 410 ponies and 429 pound-foot (583 Nm).
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 Download: 2021 - 2022 Ram HD fire recall (PDF)

About the author: Mircea Panait
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After a 1:43 scale model of a Ferrari 250 GTO sparked Mircea's interest for cars when he was a kid, an early internship at Top Gear sealed his career path. He's most interested in muscle cars and American trucks, but he takes a passing interest in quirky kei cars as well.
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