bdkim88

2011 60K isf

I noticed the level of coolant is under the 'LOW'





Visually checked my engine room with just hood opened up .. no problem .. any sign of leaking

And then visually check the below of the engine with the car lifted up and removed under cover

First I checked water pump just in case.. no problem

But..








I figured out the evidence of coolant leaking under the radiator itself

So I asked dealership what's their recommandation

They said that I should replace the whole radiator assy

So I decided to replace that and made an appointment to do the job

The whole cost of replacing it is around 780 USD maybe ( I'm Korean.. difference in currency )

Do check the radiator itself when there is no sign of leaking coolant while look at just hood opened up

When the radiator is not completely blown up ( like my case ) , you couldn't see actually the coolant bleeding out

but you can find the evidence - dried coolant - because of the evaporation from the temp in the engine room

keep driving under this minor leaking with refilling the coolant ? I don't know for this high performace car .. replacing it might be the only way



Take cares ~

TranV

iTrader: (4)

Mine is also 2011 with 47k miles. Went into the dealer for a recall and they told me it was leaking, lucky I was still under warranty and they replaced it for me...

streetx

iTrader: (4)

How mmechanically good are you? Changing a radiator is not too difficult

MK4Sup_isF

iTrader: (10)

Mine was out of warranty, went to my trusted mechanic to get it down for much less than dealer. I think this might be a design flaw in the radiator. This same issue has been popping up too often lately

I8ABMR

I plan on having mine inspected next time I go in , but I am assuming they will be in the area when doing the new recall campaign

stick

My 2012 is leaking at the same location, but was noticed at the 5k oil change! It's the end tanks on the radiator that leak.

We need to find an all aluminum one piece unit.

Jowett

Sard sells one. The price is not so nice.

Justind27

iTrader: (6)

I'm doing a 1pc setup currently, I just need to make a fan shroud and test fit everything. I just got my radiator back from my welder guy and will pick up material to make the shroud cause the oem fans don't fasten to the radiator and blades hit the fins.

StealthFF

Had to replace mine at 60K..Sounds like bad design with upper and lower attachments failing with gasket.

streetx

iTrader: (4)

I'll take a look at mine on the next oil change

bdkim88

There's no aftermarket radiator fits well and has good performance?

Justind27

iTrader: (6)

The is300 one, it's what I'm using but had to be modified alil

2010ISFU

Went in for radiator bolt recall and they broke the plastic part of the radiator that connected to the hose. So I am getting a new one for free but 2 weeks wait because they have to order it from japan. Not sure if this is true but at least I get a 2014 IS250 to drive around...lucky me.

stick

I just looked up SARD and they sell one specifically for the ISF. All aluminum, part number 29058, and it's about $1600. I'd keep replacing the OEM one under warranty, then buy the SARD when warranty ends.

lobuxracer

iTrader: (2)

Some of us are well over 100k without these issues. My Supra radiator didn't give up until 125k miles and over 15 years old. Cracks in the plastic tanks are fairly common, but very rare under warranty. Aluminum brings it's own issues - cracking, corrosion, fitment (I spent 3 hours just getting the fan shroud to fit my PWR replacement for the Supra properly), and with the IS-F you still need a transmission cooling loop to stabilize the ATF. Not exactly simple, but not hard either.