Bracket snapped connecting the front hydraulic suspension to the rear which meant the rear suspension went to the highest or lowest position, not to the drive position.
Overheated radiator caused major engine damage, over 1000 spent to fix.
Constant problems with the lights on the dashboard, warning of water in the diesel fuel and ABS failure.
Battery failure at the first sign of winter.
When everything is working, a nice car to drive even though I do not believe the suspension has ever been at its best since I purchased the car.
Any car which has done 155,000 miles is going to give some problems. You seem to have got off quite lightly.
To restore the magic carpet ride, you need to change all five spheres every 60,000 miles or four years, whichever occurs first. A worn accumulator sphere will damage the hydraulic pump (check for LHM fluid behind pump pulley, if there's fluid leaking then the pump is straining)
Change the LHM fluid every 36000 miles, it must always be a nice semi-transparent green.
The battery problem is typical of diesels in general as they need a good amount of juice to turn over the engine. There is no solution - just expect to replace batteries every two or three years and don't expect to get away with a cheapie! (My current battery is 3 years old and will be replaced in September).
I have experienced a problem with the front suspension self-levelling sensor jumping off its clip - result: front stay on the ground whilst the tail rises above it all. There is a knack of replacing it. Other than that, the previous note about the hydraulics is spot on.
I have had an ABS failure, but it was only a sensor, not the computer. And all that in over 174,000 miles.