Freightliner Cascadia, Western Star 49x. Published by Transport Canada as 2026428 on 9 September 2026. System: Brakes. 7 vehicles affected in Canada.
What the notice says On a small number of trucks, the recall repairs completed by an DTNA service facility during recalls FL958 and FL966 (Transport Canada recall nos. 2022-626 and 2023-051) may not be effective. As a result, another repair is required. On certain trucks, a software problem may not detect corrosion to the brake modulator valves. As a result, the brakes on one wheel could fully apply during automatic braking. If this happens, there could be a brake pull that can cause the truck to change direction.
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| Recall number | 2026428 |
|---|---|
| Manufacturer | Daimler Truck North America |
| Manufacturer recall number | F1039 |
| Category | Truck - Med. & H.D. |
| System | Brakes |
| Notice type | Safety Mfr |
| Published | 9 September 2026 |
| Last updated by Transport Canada | 17 September 2026 |
| Model years | 2020-2023 |
| Vehicles named | Freightliner Cascadia, Western Star 49x |
What the notice says today
The issue
On a small number of trucks, the recall repairs completed by an DTNA service facility during recalls FL958 and FL966 (Transport Canada recall nos. 2022-626 and 2023-051) may not be effective. As a result, another repair is required. On certain trucks, a software problem may not detect corrosion to the brake modulator valves. As a result, the brakes on one wheel could fully apply during automatic braking. If this happens, there could be a brake pull that can cause the truck to change direction.
The safety risk
A brake pull that causes the vehicle to change direction suddenly can increase the risk of crash.
What will be done
Daimler Truck North America (DTNA) will notify owners by mail and advise you to take your truck to a DTNA authorized service facility to inspect, and if necessary, replace the brake modulator valves. The service facility will also update the vehicle software.
Note
This problem doesn't affect the service brakes.
Version française (Transport Canada)
Problème : Sur un petit nombre de camions, les réparations effectuées par un centre de service DTNA dans le cadre des rappels FL958 et FL966 (numéros de rappel de Transports Canada 2022-626 et 2023-051) pourraient ne pas être efficaces. Par conséquent, une autre réparation est nécessaire. Sur certains camions, les soupapes modulatrices de freinage pourraient se corroder. Par conséquent, les freins d'une seule roue pourraient s'appliquer complètement après un freinage automatique. Si cela se produisait, il pourrait y avoir un déséquilibre au freinage qui pourrait faire changer le camion de direction. Remarque : Ce problème n'affecte pas les freins de service. Risques pour la sécurité : Un déséquilibre au freinage qui provoque un changement soudain de direction du véhicule peut augmenter le risque d'accident. Mesures correctives : Daimler Truck North America (DTNA) doit aviser les propriétaires par la poste et leur demander d'amener leur camion dans un centre de service autorisé de DTNA pour faire inspecter et, au besoin, remplacer les soupapes modulatrices de freinage. Le centre de service doit également mettre à jour le logiciel du véhicule.
What it said before
As read on 3 October 2026
comment: Issue: On a small number of trucks, the recall repairs completed by an DTNA service facility during recalls FL958 and FL966 (Transport Canada recall nos. 2022-626 and 2023-051) may not be effective. As a result, another repair is required. On certain trucks, a software problem may not detect corrosion to the brake modulator valves. As a result, the brakes on one wheel could fully apply during automatic braking. If this happens, there could be a brake pull that can cause the truck to change direction. Note: This problem doesn't affect the service brakes. Safety Risk: A brake pull that causes the vehicle to change direction suddenly can increase the risk of crash. Corrective Actions: Daimler Truck North America (DTNA) will notify owners by mail and advise you to take your truck to a DTNA authorized service facility to inspect, and if necessary, replace the brake modulator valves. The service facility will also update the vehicle software.
units: 7
models: Western Star 49x, Freightliner Cascadia
As read on 23 September 2026
comment: Issue: On a small number of trucks, the recall repairs completed by an DTNA service facility during recalls FL958 and FL966 (Transport Canada recall nos. 2022-626 and 2023-051) may not be effective. As a result, another repair is required. On certain trucks, a software problem may not detect corrosion to the brake modulator valves. As a result, the brakes on one wheel could fully apply during automatic braking. If this happens, there could be a brake pull that can cause the truck to change direction. Note: This problem doesn't affect the service brakes. Safety Risk: A brake pull that causes the vehicle to change direction suddenly can increase the risk of crash. Corrective Actions: Daimler Truck North America (DTNA) will notify owners by mail and advise you to take your truck to a DTNA authorized service facility to inspect, and if necessary, replace the brake modulator valves. The service facility will also update the vehicle software.
units: 7
models: Freightliner Cascadia, Western Star 49x
As read on 22 September 2026
comment: Issue: On a small number of trucks, the recall repairs completed by an DTNA service facility during recalls FL958 and FL966 (Transport Canada recall nos. 2022-626 and 2023-051) may not be effective. As a result, another repair is required. On certain trucks, a software problem may not detect corrosion to the brake modulator valves. As a result, the brakes on one wheel could fully apply during automatic braking. If this happens, there could be a brake pull that can cause the truck to change direction. Note: This problem doesn't affect the service brakes. Safety Risk: A brake pull that causes the vehicle to change direction suddenly can increase the risk of crash. Corrective Actions: Daimler Truck North America (DTNA) will notify owners by mail and advise you to take your truck to a DTNA authorized service facility to inspect, and if necessary, replace the brake modulator valves. The service facility will also update the vehicle software.
units: 7
models: Western Star 49x, Freightliner Cascadia
The copy we hold today hashes to 3ab225e3aee74808b66a5465bba66775…, so if it is ever edited the change is provable rather than a matter of memory.
Last checked . 3 changes recorded in the wording.
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