[SS Mike]

So I've had my car for almost a year now, no problems whatsoever. About a week ago, I drove to work and parked like always. When I left for work, I put it in gear and drove like normal through the parking structure. Before I even got one level down in the structure, I had the ABS and Parking Brake lights come on. I checked and the parking brake was down. I turned the car off when I got out of the structure and restarted it. As soon as I got on the freeway they cam back on. On the drive home I got the low traction, traction control off, and stabilit control off lights on, plus a message in the DIC telling me to service the Stabilitrak system. I continued driving home when I got a check engine light.

When I got home I checked the codes with my tuner and got U0073 and P069E. U0073 is CAN Bus "A" turned off. P069E is Fuel Pump Control Module indicated to the ECU to turn on the check engine light. I cleared the codes to see if they were real or an error of some type. The next day they all came back on.

I decided to check the battery cables to make sure they were tight. They were. But I noticed water under and around the battery. I was convinced that water got in some connections or something and shorted something out. Whiel driving to a friends shop the next day the check engine light went away on its own, and I didn't get any other lights at all. I thought maybe it was water and it dried up and cleared itself.

The next day, all the lights came back on. A friend and I checked the battery again and found a little bit of rust around the battery ground bolt. Took the bolt out, sanded off the rust on the bolt threads, the washer, the connector, and the threads in the bolt hole. Hooked it all back up. A short while later, all the lights came back on. This time I got one ectra code, dont' remember the number but the description was ECU lost all control with the Fuel Pump Control Module.

Everytime I turn the key off and let the car sit, all the lights, EXCEPT the check engne light, go away, but then come back on while driving.

I brought it to the dealer today and they took a look at it. The tech can't figure out what the problem is and he wants to clear the codes, leave it over night and drive it a bit tomorrow. They said they think it is the tune from Vortech. Vortech and myself do not believe this as they don't change any perameters regarding communication with any of the modules. My friend who is a MBZ tech believes it is a CAN-bus failure due to a module malfunction either from water, corrosion, or something else. The dealer said that there are about 20 codes being shown, and neither them nor I believe there is any way that 20 systems can be broken at once, especially when the car still drives normal.

Any help is appreciated, hopefully there are some techs on here that have dealt with a CAN-bus error or malfunction before. Please if you have any ideas or suggestions let me hear them.

Thanks!

-Mike