I have a Volvo XC90 and six months ago a failed engine mount was identified during a service and not replaced proactively. Then four months later, all mounts had to be replaced under the approved used warranty. Now, a plastic bracket has failed due to the earlier engine movement. This clip holds the hose for the turbocharger in place, but I am told it is not covered under the warranty as it is not a mechanical failure. Isn’t a broken plastic bracket mechanical failure? Shouldn't Volvo customer relations intervene here and cover this?