Low coolant/ disappearing

Hey guys, noticed my coolant reservoir was almost empty a while back so I filled it back up. Now it’s empty again. I noticed what I think is a leak coming from a hose down in the engine, does anyone know what hose this is? Edit : 4 cylinder 06 model

 

If this is the 2.7 engine.
I’d be looking at the coolant by-pass hose.
The newer one is metal, the old one was plastic, and is prone to leaking.

 

Yeah it’s a 2.7 L 06 model sorry forget that detail. It’s super hard to reach no idea how to get in there.

 

Look here for further details.
It may not be the problem, but it’s the first thing I would look at.
https://www.tacomaworld.com/threads/water-bypass-pipe-no-1.201053/#post-11865406

 

^^this is it! Coolant bypass pipe no.1

Updated steel part #16268-75112

Updated gasket for steel pipe #16258-75021

 

Thanks guys, don’t know what I would do without this forum

 

Before you go replacing anything, get the cooling system pressure tested to make sure that indeed is the leak.

 

Absolutely!
That’s kind of a lot of work.
Bummer if you tore into it and found out it wasn’t the problem.

 

Will definitely do a pressure test first