s2kjer

Discovered it at 93k, no warranty... Quoted $1500 to fix. I also have a oil leak at on the timing chain cover $2000 to fix.
Currently at the dealer waiting for corporate to review my complaint to see if they will assist in the cost

jspecvtec

iTrader: (4)

2011 ISF 50k miles. repaired free under warranty

michdea

Just took mines to the Lexus dealers and they want 2300 to fix the problem. 460 Lexus 2010 130000

LSpho

Any new findings?

lobuxracer

iTrader: (2)

Here's what the borescope shows:







Just barely worth addressing when I have 180k+ on the odometer and this is all there is to see. Lexus ignored this, if it even existed, when they did the fuel pressure sensor recall.

LSpho

That gooping is considered minimal? If so that is good to know that there is more time to go on from there.

viprez586

Pretty minimal but dark red is actively leaking.
pink is dried non active

lobuxracer

iTrader: (2)

It looks way bigger than it is. The coolant drop isn't noticeable at all, and I do keep tabs on it regularly. It will get fixed when I do the cam chain tensioners, it's just a matter of time.

viprez586

When you do it all, remove the water pump and you'll have a better visual of the transfer tube to the valley plate.
Helps make sure the tube o-rings are properly in place. Especially for timing cover r&r.

Scott610

iTrader: (3)

Wilkie Lexus in pa I paid 1800 for repair had like 90k I believe . Dealership has the history though if I need evidence lmao .

lobuxracer

iTrader: (2)

Thanks for the tip. I was planning to replace the coolant pump anyway. It's got well over 100k miles on it now. Lexus replaced it pretty early on because it was failing prematurely - a known issue with the '08s for sure.

Jwconeil

Any evidence of these failing after being fixed by lexus? Was the issue an inferior gasket material that has been replaced?

themap

Is this problem a 'eventually will fail' on the isf, or is it something that affects some cars and not others? I have a 2010 (since new) and haven't had any problems at all (its a canadian car). 100 000KM.

Joe Z

iTrader: (10)

There is no true gasket to replace. It's all labor..
Its a black Lexus / Toyota FIPG sealant... @lobuxracer goes in depth on the sealant to use and not to use.. (can't find the post)

There have been some minor reports of a 2nd failure, my guess is sloppy tech / prep work..

All dealerships warranty their work for 12 months unlimited miles.. Most IS F's OEM warranties have lapsed by now.

If nothing breaks and the knock sensor harness is not flooded by coolant, the only 2 parts to replace are the 2 - O Rings found on the transfer tube.
New coolant recommended by default.



Joe Z

webhed

Same question. I have a 2010 as well @ 45k miles. On the average, at what mileage does one expect this failure?