Need to replace water pump on 2006 scion xb

Here's a link. Check the Belts 2004 2006 Scion xB 2005 Scion xB 1 5L 4 Cyl Here's a picture layout William. 2005 Scion XB Drive belt replacement

I know you are looking to have the remote starter run a third time but I would say you need to look at your Fuel Pressure Regulator on the Scion. Sounds like it is not holding fuel pressure at the fuel rail and that is why it requires a third Crank

Oreillys has a water pump for the 2.4L, 09 xb for $81.99

Yes

SOUND LIKE WATER GOT IN THE LOWER FRONT ELECTRICAL SYSTEM WHERE BATTERY IS LOCATED.

the 2004 -2006 have chains.

wow -- if your powertrain warranty expires in June then I would be kinda concerned about this problem and maybe take the vehicle down to a different Toyota dealer and have them look at it.
by your description it almost sounds like a valve might need to be adjusted(?),, but it could be something different and more serious.
if you are not happy with the report from the dealer - you can always call Scion direct at (866) -70-Scion,, or (866)-707-2466.
here is also some of the Scion information about a complaint and or warranty problems:
http://www.scion.com/assets/pdf/tc_warranty/tC_Owners_Warranty_2006.pdf

It's pretty straightforward EXCEPT you must loosen the engine mount and jack the engine up about an inch to get enough clearance to get it out/in because the engine is about 1/4" too far to the passenger side. Just did my 04' and that was a hard to find piece of missing info.

I would recommend getting the transmission serviced, and the antifreeze changed.

1st ...that should be covered under 6 year 50k power train warranty from the dealer.
But if your over....you need to unbolt the right side motor mount (on the water pump side) and lift the engine some with a floor jack to get clearance,