The worst 2025 Peterbilt 389 problems
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Recalls 2
Electrical system: software
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2021-2025 Peterbilt and Kenworth vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Please see the recall report for a complete list of models. Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop functioning.
- Risk
- Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may not function properly or at all, increasing the risk of a crash.
- Remedy
- Dealers will reprogram the ECU software, free of charge. Owner notification letters were mailed February 3, 2025. Owners may contact Kenworth's customer service at 1‑425‑828‑5888 and Peterbilt's customer service at 1‑940‑591‑4220. PACCAR's numbers for this recall are 24KWL and 24PBL.
Recall number 24V915000 · Recall details
Steering
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2024-2025 Kenworth T280, T380, T480, T680, T880, L770, W990, and 2024-2025 Peterbilt 389, 520, 535, 536, 537, 548, 567, 579, 589 trucks. The steering gear assemblies may have been assembled incorrectly with fewer recirculating balls than are required, which may result in a loss of steering control.
- Risk
- A loss of steering control increases the risk of a crash.
- Remedy
- Dealers will inspect and replace the steering gears as necessary, free of charge. Owner notification letters were mailed March 20, 2024. Owners may contact Peterbilt customer service at 1‑940‑591‑4220 and/or Kenworth customer service at 1‑425‑828‑5888. PACCAR's numbers for this recall are 24PBC and 24KWC.
Recall number 24V044000 · Recall details
Technical service bulletins for the 2025 Peterbilt 389 24
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- 32 fuel injector part numbers (16 for MX-11 and 16 for MX-13) have been added to this warranty policy.
- "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes
- An exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines.
- The procedure has been updated to include additional steps for verifying the software level on the vehicle...
- The verbiage in the Introduction section has been updated.
- Updated Sheppard Steering Gear Classification Tool link in Inspection Procedure
- This optional software update is now available for chassis equipped with EMY 2021B-2023 PACCAR MX-11 and...
- The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to...
- "The software is not yet available
- "An optional software update will be available on 07/06/2026 for chassis equipped with EMY...
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Questions about the 2025 Peterbilt 389
Is the 2025 Peterbilt 389 reliable?
Owners have filed 0 complaints about the 2025 Peterbilt 389.
What is the most common problem with the 2025 Peterbilt 389?
There are not enough complaints to tell.
How many recalls does the 2025 Peterbilt 389 have?
2 recalls, covering electrical system and steering.
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