Volvo FH4, FM4
What the hazard is
Air leakage can occur in the parking brake air circuit causing the parking brakes to be unintentionally applied on the front wheels, posing an accident hazard to the driver and other road users.
What to do
Take the truck into their closest repairing dealer.
Defect
The brake hoses are too short on the front axle, which can be stretched in certain driving applications.