Hopefully someone will chime in tonight, was driving my 2010 on Fort lewis this evening when I got the "check hybrid system" orange exclamation sign, thought i could get home then the bottom dropped out with the check engine light. red warning light, then the car stalled @158k miles. When I got out to look, there was massive flow of fluid coming from underneath the front end, I initially thought it was fuel because it smelled like it, a fellow soldier who helped me push it into a nearby parking lot said it was sticky whatever it was, possibly inverter fluid? wasn't oil for sure, tomorrow I will get it towed to Toyota about 8 miles away from base, any thoughts??

 

What colour is the fluid? Is it Red/Pink, than it is engine/Inverter coolant. If I were to guess, my suggestion would be that one of your Invertor coolant hoses failed/ruptured. Hence the Hybrid System Caution and loss of pwer. Loosing an engine coolant hose would have caused your vehicle to overheat and give the red engine coolant light.

 

There are 2 cooling systems on the HS. It is basically the Toyota Camry engine and hybrid system. The hybrid inverter has its own cooling which uses the same red or pink Toyota Long Life Coolant.
I agree with the above post that one of your cooling system hoses probably broke and leaked, or maybe one of the plastic overflow containters.

The transaxle -power transfer unit is self contained with no hoses, so if it leaked you may have a cracked case. There was a recall to replace all of the 2010 transaxles a few years ago. Check if yours was repaired.

Go to this NHTSA site and enter your VIN to see if it was under the recall: https://www.nhtsa.gov/recalls

Or join the Lexus Drivers Site and enter your VIN.
https://www.lexus.com/My-Lexus/account/create-account

Or a brake line leaked as it has regenerative braking that is integrated into the hybrid system.

Let us know what they diagnose.

 

It was pink and sticky I believe, Toyota says it in fact was a busted hose

 

At least it was a simple and not that expensive of a repair.

 

how long should my son keep this?, we’ve gotten 10 good years out of it but it has gotten towed twice in 2 1/2 years, along with this fix they recommend an induction throttle body service, is it worth getting? He changed the transmission fluid himself not long ago, recommended hybrid fan service also

 

They can last a lot longer than 10 years and 160,000 miles. A hose breaking is not unusual at this age. You should have a good independent shop inspect the car for any other worn coolant hoses, suspension wear etc.

You need to find an independent hybrid shop and compare their prices to service (clean out the ducts etc) of they hybrid battery cooling fan system against what the dealer wants to charge. Google hybrid vehicle shop near me. There are quite a few around now. The HS does not have a filter on the battery cooling intake which is on the side of the rear seat behind the driver. So it gets dusty. The newer hybrids have a filter.
It is not hard to dclean it yourself and I posted the instructions in the long thread linked below. If you or a friend are handy or experienced working on cars or installing car stereos you can do this yourselves. https://www.clublexus.com/forums/hs-...0h-corner.html

You probably do not need the induction service and I bet they want $150 to do it. Just get 20 ounce bottle of Techron Fuel System Cleaner and put it in the tank when you fill up. It will clean the intake system, fuel injectors, carbon on valves etc as you drive. Most auto parts stores have it.

Get the brake fluid changed every 3 years as it absorbs water which can lead to internal corrosion of expensive brake system control components. This should cost under $150.

 

that’s why I love these forums, so much knowledge in here! I did in fact find another dealership that deals with imports so I made an appointment to get the belts and hoses especially checked and I will use the Techron Fuel System Cleaner instead of toyotas pricey servcies