I've been using a lot the feature that closes the windows and sunroof using the key. Usually from the driver side. I used it once on the passenger side. A few days later the battery was flat. I get a 3.25 amp draw when trunk fuse 5, 6, 11, 15 or 16 are in place. I believe all those systems (windows, anti-theft, stereo) hook into the convenience module.

I disconnected the module (those connectors are a proper Chinese puzzle!) but still the draw. I checked continuity to ground of pin 9 from the door lock switches and got ~150 ohms. Not sure if that's open or grounded.

The closing assist pump is off the car for service.

Am I on the right path thinking the draw has to do with the convenience module? Any thoughts on what I should do next?

What is IRCL?

Thanks,
Sixto
93 300SD