How disable start/stop to prevent turbo failure?

[Island Time]

My wife simply refuses to drive the LC as long as it random starts and stops when driving, parking etc, because her BMW comes with a start/stop disable, and she really hates the LC clunky start stop. Myself I always drive with Tow/Haul on to not have to deal with random stops.

With hybrid am not worried for starter motor or battery, because hybrid motor is starting the engine.

Anyone figured out how to eliminate the start/stop function, because the LC does not come with the "@OFF" override button that similar Toyotas like Highlander came with?

Backgrounds

• Start/stop an engine excessively will accelerate wear and reduce the life of the engine, by putting unnecessary strain on all mechanical components
• Fact is Toyota turbos do not seem to have water cooling, kindly refer to Toyota turbo image below for details
• Now you really do not want to stop a hot 1,000 degrees F turbo in "mid air", suddenly stop engine means stop oil cooling for the turbo. Immediate effect is "cooking" and breakdown of lube oil trapped in the glowing hot turbo, and that "water and carbon property" oil sludge resumes circulation through the tiny oil channels of your engine when restarted. Secondary effect is extreme heat stress on the turbo bearings, lack of lubrication

Hope one of you can share a solution that extends the life expectation of the turbo, really not keen on claiming my extended warrantee for something that is so preventable.
Would prefer to keep enjoying this Toyota

 

[Marinna]

I just trust that Toyota has a good design to address this issue before they force everybody in North America to taking this power train on Tundra, Sequoia, LC, and GX. If you really don't trust them doing the job right you can wait a bit longer to buy 4-Runner, same platform with non-hybrid power train.

 

[qberg]

1) The turbo is water cooled.
2) The turbine doesn't stop in "mid air". It no longer has a motivational force when the engine turns off and the exhaust stops pulsing. It spins down and is a very low stress condition.
3) The ECU software prevents the engine from kicking off unless certain criteria are met. If you've just pulled a trailer up a steep pass, it will very likely not meet the conditions that allow the engine to kick off because the engine will be trying to replenish the battery that was just heavily discharged on the high load scenario and they will want to let the coolant system in the engine bring the engine temp down.
4) I don't see it on the LC diagram, but the other 2.4T engines have a secondary water pump that circulates coolant through the turbo when the engine is off.
5) Start-stop on a warmed up engine has no measurable impact to overall durability. The ECU software doesn't let kick off the engine unless conditions are met. Purposely defeating the vehicle's ability to start-stop would hamstring one of the bigger ways that hybrid saves fuel.

 

[DoMoCruiser24]

1) The turbo is water cooled.
2) The turbine doesn't stop in "mid air". It no longer has a motivational force when the engine turns off and the exhaust stops pulsing. It spins down and is a very low stress condition.
3) The ECU software prevents the engine from kicking off unless certain criteria are met. If you've just pulled a trailer up a steep pass, it will very likely not meet the conditions that allow the engine to kick off because the engine will be trying to replenish the battery that was just heavily discharged on the high load scenario and they will want to let the coolant system in the engine bring the engine temp down.
4) I don't see it on the LC diagram, but the other 2.4T engines have a secondary water pump that circulates coolant through the turbo when the engine is off.
5) Start-stop on a warmed up engine has no measurable impact to overall durability. The ECU software doesn't let kick off the engine unless conditions are met. Purposely defeating the vehicle's ability to start-stop would hamstring one of the bigger ways that hybrid saves fuel.

Here’s the diagram

Source:

Toyota engines - T24A-FTS

Overview of structure of the new Toyota/Lexus engine - T24A-FTS

www.toyota-club.net

 

[Altitude]

My wife simply refuses to drive the LC as long as it random starts and stops when driving, parking etc, because her BMW comes with a start/stop disable, and she really hates the LC clunky start stop. Myself I always drive with Tow/Haul on to not have to deal with random stops.

With hybrid am not worried for starter motor or battery, because hybrid motor is starting the engine.

Anyone figured out how to eliminate the start/stop function, because the LC does not come with the "@OFF" override button that similar Toyotas like Highlander came with?

Backgrounds

• Start/stop an engine excessively will accelerate wear and reduce the life of the engine, by putting unnecessary strain on all mechanical components
• Fact is Toyota turbos do not seem to have water cooling, kindly refer to Toyota turbo image below for details
• Now you really do not want to stop a hot 1,000 degrees F turbo in "mid air", suddenly stop engine means stop oil cooling for the turbo. Immediate effect is "cooking" and breakdown of lube oil trapped in the glowing hot turbo, and that "water and carbon property" oil sludge resumes circulation through the tiny oil channels of your engine when restarted. Secondary effect is extreme heat stress on the turbo bearings, lack of lubrication

Hope one of you can share a solution that extends the life expectation of the turbo, really not keen on claiming my extended warrantee for something that is so preventable.
Would prefer to keep enjoying this Toyota

Pretty impressive how you figured out all these failure points where the world’s second largest car maker’s whole engineering department missed them.

 

[izzysanchez]

My wife simply refuses to drive the LC as long as it random starts and stops when driving, parking etc, because her BMW comes with a start/stop disable, and she really hates the LC clunky start stop. Myself I always drive with Tow/Haul on to not have to deal with random stops.

With hybrid am not worried for starter motor or battery, because hybrid motor is starting the engine.

Anyone figured out how to eliminate the start/stop function, because the LC does not come with the "@OFF" override button that similar Toyotas like Highlander came with?

Backgrounds

• Start/stop an engine excessively will accelerate wear and reduce the life of the engine, by putting unnecessary strain on all mechanical components
• Fact is Toyota turbos do not seem to have water cooling, kindly refer to Toyota turbo image below for details
• Now you really do not want to stop a hot 1,000 degrees F turbo in "mid air", suddenly stop engine means stop oil cooling for the turbo. Immediate effect is "cooking" and breakdown of lube oil trapped in the glowing hot turbo, and that "water and carbon property" oil sludge resumes circulation through the tiny oil channels of your engine when restarted. Secondary effect is extreme heat stress on the turbo bearings, lack of lubrication

Hope one of you can share a solution that extends the life expectation of the turbo, really not keen on claiming my extended warrantee for something that is so preventable.
Would prefer to keep enjoying this Toyota

I would stop right here "My wife simply refuses to drive the LC" and call that a victory. But if you need this just set it to Sport mode.

 

[Markarian421]

My “other car” has been one turbo hybrid or another for over a decade now. The engines don’t just randomly shut down once they’ve turned on. I’m always surprised by a lot of the questions and misunderstandings about the Land Cruiser’s hybrid system but I guess for lots of folks this will be their first hybrid.

 

[KyLandcruiser]

Here’s the diagram
View attachment 20729

Source:

Toyota engines - T24A-FTS

Overview of structure of the new Toyota/Lexus engine - T24A-FTS

www.toyota-club.net

This diagram is for the car style engine. The intercooler in the LC is air to air. I’d like to find a diagram for the LC setup.

 

[qberg]

This diagram is for the car style engine. The intercooler in the LC is air to air. I’d like to find a diagram for the LC setup.

While correct that the diagram is for the FF version of the 2.4T, I expect that the LC would get similar provisions.

 

[xeontis]

Tow haul mode is what you are looking for.

 

[kobyneal]

Ironic in a thread talking about engine wear we are putting the engine into tow/haul mode when not pulling anything/heavy load. It holds the lower gears longer when accelerating and stopping - so let’s be sure to wear out the transmission instead.

 

[Pavman2473]

My “other car” has been one turbo hybrid or another for over a decade now. The engines don’t just randomly shut down once they’ve turned on. I’m always surprised by a lot of the questions and misunderstandings about the Land Cruiser’s hybrid system but I guess for lots of folks this will be their first hybrid.

It’s m first hybrid. From what I am reading, based on the way this engine is engineered, the wear and tear for the motor stopping and starting shouldn’t be a concern. Am I correct in this assessment? Thanks in advance.

 

[Markarian421]

It’s my first hybrid. From what I am reading, based on the way this engine is engineered, the wear and tear for the motor stopping and starting shouldn’t be a concern. Am I correct in this assessment? Thanks in advance.

In general yes. Toyota has been doing this for a long time and has been making very reliable hybrids.

 

[Dangler]

Clunky start/stop? This is my first vehicle with that feature and honestly I didn’t even know it was doing it until I read some where about it. On mine it’s so subtle that I have to be paying attention to even notice when it does it.

 

[Don]

You should have not have bought this vehicle. You had the option to buy the Lexus.

 

[treadmark]

My wife simply refuses to drive the LC as long as it random starts and stops when driving, parking etc, because her BMW comes with a start/stop disable, and she really hates the LC clunky start stop. Myself I always drive with Tow/Haul on to not have to deal with random stops.

With hybrid am not worried for starter motor or battery, because hybrid motor is starting the engine.

Anyone figured out how to eliminate the start/stop function, because the LC does not come with the "@OFF" override button that similar Toyotas like Highlander came with?

Backgrounds

• Start/stop an engine excessively will accelerate wear and reduce the life of the engine, by putting unnecessary strain on all mechanical components
• Fact is Toyota turbos do not seem to have water cooling, kindly refer to Toyota turbo image below for details
• Now you really do not want to stop a hot 1,000 degrees F turbo in "mid air", suddenly stop engine means stop oil cooling for the turbo. Immediate effect is "cooking" and breakdown of lube oil trapped in the glowing hot turbo, and that "water and carbon property" oil sludge resumes circulation through the tiny oil channels of your engine when restarted. Secondary effect is extreme heat stress on the turbo bearings, lack of lubrication

Hope one of you can share a solution that extends the life expectation of the turbo, really not keen on claiming my extended warrantee for something that is so preventable.
Would prefer to keep enjoying this Toyota

This doesn’t have the stop/start of a conventional engine. It thankfully never hesitates to move from a stop due to the electric motor. I have found it be an impressive and smooth powertrain.

 

[Doggman1525]

My wife simply refuses to drive the LC...

I'd take the win and go for a drive, but that's just me -

 

[Island Time]

Appreciate all the suggestions and opinions, yet must admit that star stop is beyond maddening to us. Yesterday we were stopped in line for a traffic light, engine stopped, we looked at each other questioning if the car was stopped or dead? The display message came up to shift to park? We did, then all cars around us started driving and honking, still no rpm. Pressed starting button and held till rpm on dash, then switched to drive again, traffic light red again. Switched on tow/haul mode to keep engine alive… that worked and on our way home. Scary and dangerous, and we have owned tons of vehicles from BMW to Mercedes or Dodge, driven everywhere in US, Canada and Europe, yet to us this hybrid stuff is not ready for prime time. Would gladly disable and not end up in a terrible accident. Start stop in our BMW cause a fender bender in ferry lineup, where we stopped after a long drive. Car was off on the dash, yet when stepping out car auto started and hit car in front of us clearly because the engine was dormant and like a booby trap restarted unexpectedly.

 

[RUN-8]

The situation you are describing is indicative of a defective vehicle, literally no other member here has described or encountered that situation. A message will display asking if you want the truck to shut off after an hour of inactivity if you’re in park. Otherwise nothing you describe has happened with ours.

Alternatively you’re making shit up because you have buyers remorse and want to justify it with conjured up “problems”.

This is starting to smell of shit.

Sell the LC and move on with your life, you’re never going to be happy with it.

 

[DoMoCruiser24]

May not even actually own the vehicle. A lot of the “issues” threads posted on the forums have a bovine scent to be honest. Haters going to hate