I have a 2000 w215 with 285000 on the clock..still love this car ...pressure hose blew out yesterday and it might be the power steering ..anyway this hose runs from underneath valve block front arch ..along bottom of radiator disappearing somewhere beyond..there are two other lines running below this line under the rad..it’s the top one of the three and attaches to a aluminium valve block located front of left wheel
can anyone supply me with a hose routing diagram so I can see where it attaches please ?

The valve block has a P stamped on it next to the hose union at the bottom of the duo valve block

It was the rear abc line that had blown out and attempting to remove the union nut from the little aluminium block behind wheel well was impossible...used heat, brake wrenches , releasing oils and vice grips....ended up cutting pipe and using a 10 mm brass plumbing connector to join in the pipe after having the rubber hose part replaced for £12 by the local hydraulics firm...

There aren’t any power steering hoses that run underneath the radiator.

Theres a high pressure hose from the pump to the steering rack, and there’s also a low pressure hose the runs from steering rack back to the pump reservoir

looks like you solved your problem but just wanted to add that in case anybody is digging through these threads for answers in the future