Been a bit frustrating as of late chasing down an electrical gremlin. Good news is I've eliminated some potential causes. Bad news is I'm not much closer to finding and resolving it!
Have had a battery drain going on for quite some time. I replaced the battery and alternator starting with the obvious. Battery continues to drain and has gotten worse as of late. I have noticed that the car cycles 'awake' constantly with the 'P' on the dash lighting up, the Start/Stop button, and the DCT shift knob. This appears to be the cause of the battery drain. The trouble is troubleshooting it.. I read up on some common issues - the EDC module being a common point of failure/drain. I went ahead and ordered a used unit off of eBay and replaced the module. While having the old module out the battery drain and awake cycle seemed to stop. Unfortunately after buttoning everything up with the replacement in, it returned.. I went ahead and programmed the new batter, EDC module, and reset the CAS system to no avail. I also removed the DWE (alarm) module, also no luck. The car still reads numerous K-CAN, CAN, Bus faults leading me to believe there is crimped or shorted wire somewhere in the system. Lord only knows where. I'm trying to avoid starting to chase down a lone wiring issue in what is probably miles of line in this car. May try the IBS cable just for the hell of it, pulling some fuses, etc. Not my area of expertise..
Good news is mechanically everything else is functioning beautifully. No issues outside of the drain. Practically speaking the new battery tender keeps it from dying. Just afraid to park the car anywhere for too long without it. Will battle through this one. In the meantime I gave the car a much needed wash which reminded how much I love it despite it's faults!
