There used to be a relay that packed up on them, I think from memory it's the no 30 relay that powers up the ECU. Same thing happens on Golfs of that age.

Original relays are black and replaced by a white/neutral coloured part.

Lower part of dash and fusebox has to be removed and relay is behind the main fuse box.

VW part number - 165 906 381

(Galaxy is Ford badged VW Sharan)

P I C

(167 relay is fuel pump.)