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Electrical system

2021 Freightliner Cascadia Electrical problems

Owners have filed 2 complaints about the 2021 Freightliner Cascadia's electrical system with NHTSA - 12% of all its complaints, most recently on September 17, 2026. Dead batteries, warning lights, wiring, alternators, infotainment and electronic module failures.

Complaints
2
Recalls
1
Crashes
0
Fires
0
Injuries
0
Deaths
0

Electrical recalls for the 2021 Freightliner Cascadia

Electrical system: cables

21V481000122,056 vehicles affected

The problem
Daimler Trucks North America, LLC (DTNA) is recalling certain 2019-2022 Freightliner Cascadia P4, 2021 Western Star WH126, 2020 Western Star WJ121, and 2021-2022 Western Star 49X vehicles. The battery cable terminal may break, resulting in a loss of electrical power and unintended engine stall.
The risk
An engine stall increases the risk of a crash.
The fix
Dealers will repair or replace the battery cables, free of charge. Owner notification letters were mailed on January 7, 2022. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-893.

Electrical complaints

Electrical system

Odometer Fraud. The contact purchased a 2021 Freightliner Cascadia. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 438,861; however, service records listed the mileage at 742,227.

Filed Incident Electrical systemNHTSA 11764951
SteeringElectrical systemBrakes

When driving, there is a constant and very strong vibration throughout the entirety of the truck. This makes it difficult to steer and drive in a safe manner. I've replaced any parts that might be associated with this malfunction with brand new parts at the advice of professional mechanics (cost over $30,000) and it was to no avail. The truck is still malfunctioning and I have been left unable to work or barely working for 14 months. The vibration has caused many health concerns, like headaches, nausea, and stomach ulcers. I went to over 10 dealers and there has been no solutions that have worked.

Filed Incident Steering · Electrical system · Service brakesNHTSA 11561665

Freightliner Cascadia electrical complaints by year

Cascadia electrical problems, every year

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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