Hydraulic control unit, anti-lock brake system failed which resulted in "no brakes". Truck went through garage door. Could have happened on the road or stopping for pedestrian's. Problems reported to and confirmed by an independent service. The hydraulic control unit has not been inspected. No warning lamps, messages or other symptoms of the problem prior to failure. The hydraulic control unit was kept by the independent service and can be inspected. Parts have been replaced.*JB