Originally Posted by ACEtheOG

UPDATE
Got the car back today and it looks like my problems are solved!
Took a quick look before starting it up--coolant was sitting at the full marker. Fired her up--still at full. Drove it like i stole if for about 30km~18mi--still at full. I'm a happy camper. My OCD will make me monitor it for the next few months, so I'll continue to check in.

Ended up splitting the cost 3 ways with the dealer and Lexus. I did not ask for this--my service rep. called me with an update (they found the leak and the cause LOL) and that they would cover 2/3rds of the cost. Again, my complaints about the issue were well documented with the dealer since 2014. Full disclosure--my family and I have purchased and leased many vehicles from this dealer and have serviced every single one there. I was going to push for more but the dealer/service rep. has done many favours for me in the past. Total charged to me came to $417.18 Canadian which is about $320.00 US.

The following info was taken directly from my invoice:
Condition: Guest tops up coolant every week. Found coolant on driveway.
Cause: Coolant leaking from heat exchanger assembly.
Correction: Removed intake manifold and heat exchanger to reseal. LWAL Goodwill. Resealed heat exchanger assembly and replaced broken connectors
Qty 2 / Part 17177-38040 / Desc. Gasket
Qty 1 / Part 82817-30L40 / Desc. Protector
Qty 2 / Part 96761-35035 / Desc. Ring, O
Qty 2 / 08826-00100-WA / Desc. Sealant
Qty 4 / 90980-12117 / Desc. Housing, Connector
Qty 1 / 22271-38020 / Desc. Gasket
Qty 5 / Desc. Labour

Good luck to all those experiencing the issue and continued luck to those yet to see the dreaded symptoms.

I got some pictures and a video after they pulled everything apart--it looked just like the photos posted earlier in the thread.

Originally Posted by ACEtheOG

...Qty 2 / 08826-00100-WA / Desc. Sealant...

Originally Posted by lobuxracer

Looks like they used the magic moose mucous they were supposed to use. Good for you!!!

I won't argue about the deal you got, but I have to say if I had brought this up under warranty numerous times without resolution, I might not have been as agreeable to paying anything at all. But truth be told, I am the guy who would do this myself anyway because of my prior experience with dealership warranty fixes.

Originally Posted by FFM

It costs a lot of money in the long run, but dealerships bend over backwards for long term paying customers. Always cracks me up when fired up people storm into the dealer making demands that have never spent a dime in that business.

Originally Posted by Joker4096

I believe that my car is having the same symptoms. I want to do the job myself though. So i may do a write up whenever the time comes.

Originally Posted by newgsman

Some dealerships might favour some of their customers but the reality is that they rarely if ever do anything truly for free. Lexus owners are charged premium rates for all services and the reality is that most dealers only do "favours" for a customer if they believe they can recoup the cost of the favour from the customer through regular overpriced services. Most people will have to pay significant amounts for almost worthless services before they get anything close to resembling a freebie. Even in the case of ACEtheOG here, he has had to lease and service several vehicles and in the end was still asked to pay for a service that should rightfully have been covered under warranty. Conveniently for the this generous dealer, the problem could only be confirmed after warranty has expired.

Originally Posted by SRTISF

Yea I think it is more time based.. Most of the cars I have been reading about with the leak are 7-9 years old. I haven't heard much about newer cars failing.

Originally Posted by kzlflash

Mines is a 2011, and leaked back in Nov. 2016, which puts it in the 5/6 year range.

Originally Posted by FWizard

Does anyone know where youd stick a borescope exactly in our engine bay to check for the plate leak?