No warning messages or signs. It has happened twice now. The rear suspension airbag leveling system has blown out. Two separate times. The suspension is now out on the rear of the vehicle which is a safety concern. Also, when the air bag does blow, it is loud and startling. When driving and it blows up, it is very startling and then you are driving with a trailer connected and a compromised rear suspension. The airbag had been replaced once. It is possibly being over inflated making the pump the problem potentially.