Need Help S5 vert electrical issues
 

Just bought her about a month ago.

Radio turns off when driver door is opened.

wont comeback on after shutting off car and wont hold memory

only driver side speaker under dash works

driver side window doesnt work

dash clock works sometimes

no door lights work or key reminder

I opened up the CPU but looks decent besides some discoloration on the back. pics attached.

Dash clock is notorious for having cold soldering joints which causes the unit to work in an inconsistent manner. Resoldering could fix this.

The courtesy door lights work off the switch which places a ground on the light when the door is open. Each of the door lights has two wires. Blue/Red would have constant voltage and the Blue/White wire is responsible for the ground from the door switch. If the Blue/Red wire has constant power then ground the Blue/White wire to activate the light. If it does not light up then perhaps the bulb is bad.

If the driver window is in the up position then apply voltage to the Green/Black wire in the window switch and the window should go down. Place voltage on the Red/Black wire and the window should go up. If this doesn't cause the window to move then either the switch contact points are worn out or the motor is no longer working.

The key reminder switch/sensor runs a wire to the CPU which is Blue. This wire is found in the plug w/20 wires and the blue wire is found in one of the 4 corners of the plug w/20 wires. Place voltage on this wire and the reminder chime should occur. If it does not then either the CPU is problematic or there is a cold solder joint. If placing voltage to the Blue wire causes the chime to occur then the issue lies at the switch/sensor. W/the key in the ignition the switch should close and causes voltage from its Blue/Red wire to pass through the switch on its way to the CPU. Now the following is rather important for the Blue/Red wire in this switch is powered by the Room fuse which powers the voltage to the door courtesy lights as well as powers the radio w/constant voltage necessary for memory to work plus this fuse powers the clock for memory purposes thus you need to make sure the room fuse is good. Agreed? It's entirely possible that most of these issues are related to the room fuse.

thank you so much!! I will report back on results.
off topic
have you ever had Big Anthony's ribs in Tulsa?
I work for Hilti and I hit that place every time I visit.

I have not to this point.

found something wierd, the room fuse is not blown but had corrosion when i switched the fuse I got a spark but when I tested with a cirtcuit tester there is no power going to room fuse.

White/Red wire from the BTN fuse powers the room fuse and the room fuse powers the Blue/Red wire. So, you're saying the White/Red wire feeding the room fuse slot has no constant power or it's the B/R wire w/o the constant power?