I have a 2004 C320 with 68k miles. The vehicle is in very good condition and has been well maintained. About 6 months ago the anti-theft alarm siren would sound intermittently. A week or two later the battery would drain overnight. A friend, had the same make and model, unplugged the module behind the front passenger wheel well. Everything seemed fine at that point. Now, I cannot adjust the driver seat or the steering column. Is this a coincidence or does the disconnected module also control the driver seat? Thanks