Passat (B5) :: CCM Damage / Gas Cap Lid Won't Open Hitting The Switch

2000 Passat 2.8L. The start of the problem happened when my gas cap lid would not open hitting the switch thus causing me to strip down the lining in the trunk and manually opening the cap by pumping the actuator body. At the time that was the only problem. I couldn't find the source of the problem so I open the cover for the fuse panel and tried to see if I had a blown fuse. I tested all the fuses and they were all fine.

A few weeks later I drive home from work one night, and since I didn't work the next day Sunday, I didn't find out until Monday that my car would not crank. My father said it might have been the battery so he tried to jump it with his car but still no luck. We even tried pushing the car to its start (my car's stick) and put it in second gear and still no luck. My uncle a mechanic said the starter relay was probably faulty so we checked that out. After taking out relay 185 which is in the 12th spot on the B5 relay panel, we thought it might have been the cause since when we removed the cap and wiggled the components a bit, the car would indeed start. This led us to believe that there could be a possible electrical problem that isn't allowing the relay to work on its own.

We then head on over to the VW dealership which is about 5 minutes from my house and they said it could be the relay, or it could be a damaged CCM and told us to check if the driver floor carpet was wet. We stripped down the carpet and indeed the carpet was wet on the inside along with the wires leading to the CCM. We took out the CCM though and appears as though it was dry and not damaged so I think we're okay with that.

We tried to find where the water came from and he said something about the drain hole under the battery and when he said that I remembered that there was a little water on the car battery after it rained which I thought should not occur. We removed the car battery and noticed that the drain hole was completely clogged and there was water seeping through other holes which is how the carpet got wet. So anyway, my uncle modified relay 185 somehow so that I could atleast get the engine to run. However, the power windows still do not work, interior lights do not work, side view mirrors do not work, sunroof does not work, trunk/gas cap lid do not work, remote button, and all other interior lights do not work despite being able to drive the vehicle. The parts and service guy at the dealer said to replace the CCM could be 600 plus the time to install/program it.