IF your touch pad does NOT say Computerized leveling, The manual states that every time you start the engine you MUST push the STORE button. That puts the system in hibernation. IF at anytime road heat causes the fluid in the lines to expand and push a jack down, the system sees this and will open the appropriate jack solenoid to retract this jack. It will happen so quick the buzzer and down light will not come on. IF the jacks are fully retracted, then hitting bumps and such will NOT cause a jack to extend at all, even if the springs are weak. Doug