http://wiki.club8090.co.uk/index.php/Co ... ht_on_dash
From there
by AngeloEvs
Almost right, firstly the chips in the Level Sender Control Unit (LSCU relay 43, on the main fuse panel at the front on late vans but up under the dash on the A pillar near the crown of earths on early vans) )are VAG coded so no idea of what they are.