The worst 2020 Western Star WJ121 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
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Recalls 2
Fuel system, diesel: fuel injection system: fuel rail
- What is wrong
- Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2022 Western Star 4700, 2019-2022 Freightliner 114SD, 2021-2022 Western Star 49X, Freightliner Cascadia P4, 2022 Western Star 47X, 2021 Western Star WF110, 2020 Western Star WJ121, and 2019-2021 FCCC XCP Chassis vehicles. The fuel tubes between the fuel rail and the injectors for cylinders four, five, and six may fatigue and crack, which can result in a high pressure fuel leak.
- Risk
- A high pressure fuel leak in the presence of an ignition source can increase the risk of a fire.
- Remedy
- Dealers will replace the fuel tubes, and install vibration isolators, free of charge. Owner notification letters were mailed January 28, 2022. Owners may contact DTNA customer service at 1‑800‑547‑0712. DTNA's number for this recall is FL-915.
Recall number 21V965000 · Recall details
Electrical system: 12v/24v/48v battery: cables
- What is wrong
- 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.
- Risk
- An engine stall increases the risk of a crash.
- Remedy
- 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.
Recall number 21V481000 · Recall details
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Questions about the 2020 Western Star WJ121
Is the 2020 Western Star WJ121 reliable?
Owners have filed 0 complaints about the 2020 Western Star WJ121.
What is the most common problem with the 2020 Western Star WJ121?
There are not enough complaints to tell.
How many recalls does the 2020 Western Star WJ121 have?
2 recalls, covering fuel system, diesel and electrical system.
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