[mcs]

Mostly the main pump fails first, the transfer pump usually leads a long life as it works only half the time.

To change the pump, it can be done at home in about 2 hours. You need to have the workshop manual for it though, which is avail on this forum.

Advice i would offer is to have the tank as empty as possible as you will be inside the boot inside the spare wheel well.

You will also need to make sure any tools you use to remove the security rings are covered with cloth as they can spark and start a fire if hit with a hammer etc.

You will need to remove both access panels and both top of tank access ports to get to the hoses for the pump.

Otherwise the rest is very straight forward as per the manual.

Mike