- The problem
- Daimler Trucks North America LLC (DTNA) is recalling certain 2017-2019 Freightliner Cascadia, Coronado and 122SD, and Western Star 4900 trucks, equipped with Cummins ISX15 or X15 diesel engines. In certain driving conditions, such as on a long down-hill grade, the fuel line may burst if the fuel pump cooling circuit screen becomes restricted.
- The risk
- If the fuel line bursts, fuel may leak onto the road resulting in a roadway hazard for other motorists. The engine may also stall without warning, resulting in the vehicle's inability to restart, increasing the risk of a crash.
- The fix
- Dealers will replace the affected nylon fuel line with a steel fuel line, free of charge. The recall began November 21, 2018. Owners may contact DTNA customer service at 1-800-547-0712 or Cummins customer service at 1-800-286-6467. DTNA's number for this recall is FL789.
Engine & cooling
2019 Freightliner Cascadia Engine problems
Owners have filed 3 complaints about the 2019 Freightliner Cascadia's engine & cooling with NHTSA - 10% of all its complaints, most recently on January 7, 2025. They describe 0 crashes, 1 fire and 0 injuries. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
- Complaints
- 3
- Recalls
- 1
- Crashes
- 0
- Fires
- 1
- Injuries
- 0
- Deaths
- 0
Engine recalls for the 2019 Freightliner Cascadia
Engine complaints
I am writing to bring to your attention a potentially dangerous situation caused by what I believe to be a manufacturer design flaw with the SS 1034797 M2, 108SD, 114SD Coolant Level Sensor P/N 06-93316-002. On [[redacted]], one of our trucks (VIN: [[redacted]]) experienced a low coolant warning and an automatic engine shutdown while traveling on the interstate in a construction zone. As you can imagine, the sudden stoppage of a tractor-trailer in the traffic lanes of a freeway presents an extremely hazardous...
Read the full complaint
situation, not only for our driver but for all motorists in the vicinity. For us as a motor carrier, this is compounded by the likelihood of legal liability resulting from any collision involving a stationary truck in such conditions. The root cause of this incident appears to be the failure of the magnet within the surge tank to maintain its buoyancy. When the magnet sinks to the bottom of the tank, it signals the engine control module (ECM) that the coolant level is critically low, triggering an engine shutdown. While I understand the intent is to protect the engine from potential damage, this design flaw creates an unacceptably dangerous scenario - especially since, in many cases, the engine is not actually at risk of damage. In this instance, I instructed the driver to unplug and after a 15-minute period, he restarted the truck and drove to a nearby truck stop. Remarkably, the truck remains operational without the sensor repair, further underscoring the superficial nature of this issue. Unfortunately, this is not an isolated incident. We have encountered similar sensor failures across our fleet, but this particular event was the most severe. While I am not an engineer, it seems logical that the coolant level sensor should be paired with a high-temperature reading before an engine shutdown is initiated. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Engine caught fire on drivers side.
Valve cover gasket leaking oil at 20.000 Miles. Very hard steering when low rpm ( parking and eco - transmission shift to neutral at high speed , resulting in low rpm. Safety problem if a turn is required) bluethooth is useless. Very bad reception on the other end brakes : shift sometime to left or to right, when apllied. Fuel gauge off by 1/8 of capacity and getting worse
Freightliner Cascadia engine complaints by year
Cascadia engine problems, every yearSource: 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