MB actually do a rebuilt ABC pump now, circa £500.
the valve blocks can be rebuilt with a set of Viton seals @ about £90 per set.
any decent hydraulic place can make you new pipes (even flexi stuff) like Pirtek.
ABC is great, and now better understood by indies, and with regular fluid changes every few years, will stay good for life.
I‘d certainly prefer to refurb it than go for some compromised coil over system.
@NigelCL the pneumatic pump is LHS of boot (high up behind the side panel) encased/surrounded by foam, it can suffer getting wet via boot seal. Once wet it can short/fail.
may be worthwhile checking the area out, as the CD changer & amp are below it and if very wet they can suffer too.
wet front foot wells - check your pollen filter and the drains below the windscree. Once pollen filter clogged with leaves it can overflow an soak your carpets- which can soak the ECU,
The 215 is utterly beautiful, effortless, & cosseting ...... still miss mine.