To continue the no fuel pressure issue, I jumped the correct pins on advice and yes, now find power at the fuel pump red lead but the pumps do nothing. It could still be a SAM issue since with the key in run position there is no power showing on the red lead. the relay seems okay and has continuity on its electromagnet.

So Im feeling new pumps are in order and what a Bt* dealing with the hoses and tank seal. And there should be notes about emptying the tanks prior to work. A tilt puts the low pump below fluid level and yikes. Gas everywhere!

Yet another reason the old 124 was to be preferred over the W211. These pumps are a nightmare of complexity and fragile and dont really fit through the opening.

Off to harbor freight to get a fuel transfer pump and jerry cans to empty the tank!

OK I was confused thinking there were dual pumps, the second cover is just the siphon I suppose. The old 124 had dual pumps. So they say 'just slide the tubes off' !!! "JUST" with a tube welded onto the hose barbs and set since 2004, 21 years! This is major extraction of hardened plastic...

At 179K I suppose failure is normal...