Coolant Service

[yaris2007_22]

Where exactly is the engine drain block plug to drain coolant out of the engine. I have 2007 yaris. All I see is the drain cock for the radiator which can be seen on top of the hood.

[Kazimodo]

Well , this thread has been dead for 2 years ...
...but there were some interesting questions in it ,
..
from the service manual on pdf , they say to
empty the radiator , removing cap and loosening
the cock on the cylinder head , no mention of the
"bottom of engine spigot / faucet " ,
and if N9QGs did the job right ,
half a cup of old coolant left in the
engine is not worth the trouble .maybe he didn't loosen
the cock on cylinder head , from what he wrote he even
took radiator cap " off "after a minute of slow flow ...
wonder if engine would have given more milk (coolant)
if the top cock were loosened ?????
.
I'm at 145,000 Km , after 7 years , would not want to
rush this job for nothing ,since it is written that the
original coolant is good for 120 months ,(10 years WOW )
and 160,000Km .

[Klink10]

Originally Posted by yaris2007_22

Where exactly is the engine drain block plug to drain coolant out of the engine. I have 2007 yaris. All I see is the drain cock for the radiator which can be seen on top of the hood.

It's on the back side of the block, down low. You will have to get under the car to get to it.