I had a quick look and got this diagram -  or   http://www.japan-parts.eu/toyota/eu/2008/avensis/zzt251l-almekw/3_273550_039_352W/electrical/8401_switch-relay-computer/3#28300 http://www.japan-parts.eu/toyota/eu/2008/avensis/zzt251r-awmekw/3_273550_059_352W/electrical/8401_switch-relay-computer/3#28300 The owners manual normally has the fuse and relay info. Hope it helps with the relay location.