That is a very good idea. I should of thought about it.
Anyway I have looked in the bentley and i think the comfort relay is to do with the central locking. It wasnt very clear what is did. It just said where it was and pointed to it in winring diagrams.
"AUXILIARY RELAY PANEL - the auxiliary relay panel contains five relay posistions. In later models an additional fuse holder (fuse 48) and the EWS II (anti Theft) transmitter/reciever module are located on this panel. (see fuse layout picture)
The panel is located next to the steering column under the drivers side dashboard. to access this panel, remove the lower dash panel on the drivers side. Then remove the drivers side knee bolster. lower the relay panel by gently releasing the plastic retainers. see fuse location picture.
During installation, be sure the retainer tabs are engaged in the relay panel.
hope this helps.