Under the car on the bottom of each fuel tank. One side has a transfer pump in it.
#35 and #17 here:
http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=202082&M=111%2E944&GA=722%2E605&GM=7
17%2E460&CT=F&cat=45H&SID=47&SGR=015&SGN=01
and you have to drain the tanks and have a special tool.
http://www.zdmak.com/wbstore/main.asp?ACTION=prod&TYPE=&CTMP=1&CAT=&SUB=&PROD=&S
earch=fuel%20sender&LowCt=0&PG=
> Thanks for that , can you tell me where senders are on these models - is it
> much of a job to replace them ?
> Thanks
> Rob