Remove the cigarette lighter and small central control panel. Remove the steering wheel, or the central controller will not come down to remove the combination switch. Take it out gently. Then there are seven screws in the central control, all of which can be removed. Pay attention to the many connecting lines behind you when you go down. Then tear down this beam, this one with an air outlet is always there, and the warm air and cold air are close to him. The blue cable is connected to the warm water valve. You must remove it all before you can replace it. What needs to be clear is that the copper pipe and the black pipe below are two water pipes leading to the engine room. Once in and out, the black pipe below is the warm air water valve. I won't describe the process of putting it back one by one, just the reverse order of installation and disassembly. Because the floor was all antifreeze, the original sound insulation was soaked, so this time it was redone and demolished.