your CD changer somehow walked off on you... the module on the picture, that is going down vertivcally is the DSP module. the module that is going down at an angle is a Assist module which might be also a Bluetooth module... that portion needs to be tested...

if you have wetness downthere (it did not souind right!!!!) you might want to dry it up, and then check for the corroded wires - that is the best case scenario... the worst case - something got fried on the component level at the modules, which means, the modules will have to be replaced...

but... one thing at a time...dry it up first, try to find the source of water leak...