LFA Launch Control details
01-26-11, 09:58 PM
#1
Pole Position
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LFA Launch Control details
via Lexus Enthusiast
http://lexusenthusiast.com/2011/01/2...aunch-control/
http://lexusenthusiast.com/2011/01/2...aunch-control/
When set, launch control enables the vehicle to accelerate from a standing start at 4000 rpm. Launch control uses overall optimized control that considers vehicle acceleration performance, stability and clutch durability. (Do not use launch control on public roads.)
Setting the system
1. Ensure that you are seated well back in the driver’s seat with the seat belt fastened. Make sure that the passenger is also seated well back with their seat belt fastened.
2. Start the engine. Firmly depress the brake pedal with your left foot and release the parking brake. Continue to depress the brake pedal.
3. Select SPORT driving mode.
4. Select shift speed level 7.
5. Pull the “+” paddle shift switch to select 1st gear.
6. Pull the “-” paddle shift switch and hold it for 5 seconds. “LAUNCH” will be displayed on the meter.
7. Release the “-” paddle shift switch.
8. Depress the accelerator pedal firmly. Continue to depress the accelerator pedal. The engine speed will be automatically maintained at 4000 rpm. The vehicle is then ready for launch.
9. Release the brake pedal. The vehicle will launch forward.
Once the accelerator pedal is released completely, launch control will be canceled and SPORT driving mode will be engaged.
Start-off acceleration
Start-off acceleration depends on how much the accelerator pedal is depressed.
Usage restrictions
*Launch control can not be set if the total mileage shown on the odometer is less than 310 miles (500 km).
*Launch control can not be set until the engine and transmission are fully warmed up.
*Before using launch control, warm up the vehicle by driving it. Launch control can not be set if there is a malfunction in the engine, transmission, drive control system or other relevant systems.
*As launch control places a significant load on the vehicle’s mechanisms,it cannot be used two or more times in succession. After using launch control, cruise at a normal speed for approximately 10 minutes to allow vehicle mechanisms to cool down.
*To protect the systems,the number of times that launch control can be used is limited. To check how many times launch control has been used on your vehicle, contact your Lexus dealer.
[Source: Lexus]
Setting the system
1. Ensure that you are seated well back in the driver’s seat with the seat belt fastened. Make sure that the passenger is also seated well back with their seat belt fastened.
2. Start the engine. Firmly depress the brake pedal with your left foot and release the parking brake. Continue to depress the brake pedal.
3. Select SPORT driving mode.
4. Select shift speed level 7.
5. Pull the “+” paddle shift switch to select 1st gear.
6. Pull the “-” paddle shift switch and hold it for 5 seconds. “LAUNCH” will be displayed on the meter.
7. Release the “-” paddle shift switch.
8. Depress the accelerator pedal firmly. Continue to depress the accelerator pedal. The engine speed will be automatically maintained at 4000 rpm. The vehicle is then ready for launch.
9. Release the brake pedal. The vehicle will launch forward.
Once the accelerator pedal is released completely, launch control will be canceled and SPORT driving mode will be engaged.
Start-off acceleration
Start-off acceleration depends on how much the accelerator pedal is depressed.
Usage restrictions
*Launch control can not be set if the total mileage shown on the odometer is less than 310 miles (500 km).
*Launch control can not be set until the engine and transmission are fully warmed up.
*Before using launch control, warm up the vehicle by driving it. Launch control can not be set if there is a malfunction in the engine, transmission, drive control system or other relevant systems.
*As launch control places a significant load on the vehicle’s mechanisms,it cannot be used two or more times in succession. After using launch control, cruise at a normal speed for approximately 10 minutes to allow vehicle mechanisms to cool down.
*To protect the systems,the number of times that launch control can be used is limited. To check how many times launch control has been used on your vehicle, contact your Lexus dealer.
[Source: Lexus]
01-26-11, 10:14 PM
#2
Lexus Test Driver
That is fabulous information. For the longest time, I had been wondering how LFA's launch control system will work.
4000 rpm is a great launch rpm since LFA's powerband starts at 3700 rpm where it is putting out 95% of its peak torque. I am sure now with this launch control system, LFA can hit 0 - 60 mph in 3.1 - 3.3 seconds easily.
Thanks so much for the wonderful information, Lexusman.
What an amazing picture:
4000 rpm is a great launch rpm since LFA's powerband starts at 3700 rpm where it is putting out 95% of its peak torque. I am sure now with this launch control system, LFA can hit 0 - 60 mph in 3.1 - 3.3 seconds easily.
Thanks so much for the wonderful information, Lexusman.
What an amazing picture:
Last edited by 05RollaXRS; 01-26-11 at 10:34 PM.
01-26-11, 11:43 PM
#3
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Launch control is confirmed 
!!! This is Houston control, 10 seconds to launch 
.
Great news everyone!
Now the haters will really look silly once production LFAs with the launch control system are tested and used in comparison tests.
!!! This is Houston control, 10 seconds to launch .Great news everyone!
Now the haters will really look silly once production LFAs with the launch control system are tested and used in comparison tests.
01-27-11, 05:17 AM
#4
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I honestly dont think its going to be much faster. Its a cool car but its behind the curve.
01-27-11, 07:20 AM
#6
Lexus Test Driver
Like stated, 0 - 60 mph should easily come in 3.1 - 3.2 seconds and 1/4 mile in 11.1 - 11.3 seconds easily at 127 - 128 mph (if not better).
LOL. Behind the curve?? You obviously don't have much clue here then.
Provided someone with a production LFA will lend his LFA for testing.
LOL. Behind the curve?? You obviously don't have much clue here then.
Provided someone with a production LFA will lend his LFA for testing.
Last edited by 05RollaXRS; 01-27-11 at 07:39 AM.
01-27-11, 09:10 AM
#9
Lexus Test Driver
First of all, automated manuals cannot rev the cars up and drop the clutch since the clutch is controlled by the computer.
Secondly, the "neutral dropping" work around was highly flawed in the Lexus LFA since LFA spun way too much off the line and 1st to 2nd shift plus the shift shock of the neutral slamming resulted in bogging off the line as well.
Now a very well developed launch control (like in the LFA) actually allows the computer to control wheel spin of the car while maximizing traction and holding the revs from falling in order to get fast off the line.
A proof of that was when Lexus LFA could easily out-launch the Audi R8 V10 in the 0 - 100 - 0 mph test in "Battle of the supercar" despite being RWD.
Secondly, the "neutral dropping" work around was highly flawed in the Lexus LFA since LFA spun way too much off the line and 1st to 2nd shift plus the shift shock of the neutral slamming resulted in bogging off the line as well.
Now a very well developed launch control (like in the LFA) actually allows the computer to control wheel spin of the car while maximizing traction and holding the revs from falling in order to get fast off the line.
A proof of that was when Lexus LFA could easily out-launch the Audi R8 V10 in the 0 - 100 - 0 mph test in "Battle of the supercar" despite being RWD.
01-27-11, 09:25 AM
#10
Speaks French in Russian
So you only have a limited amount of times you can use it and only the dealership can tell you how many you have left? So when you use them all, you cant use it again? Sounds pretty ghey to me.
01-27-11, 09:43 AM
#12
Lexus Test Driver
I read the number is very big. More than someone who regularly tracks the car would need/want to.
01-27-11, 09:51 AM
#14
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-- Guys he updated his article......
Although we’ve known for some time that the Lexus LFA is equipped with Launch Control, details have been far & few between. This system, which optimizes fast starts off the line by holding the transmission at a higher RPM, is essential for racing and providing the best track times.
Now, with the first production models now reaching customers around the world, finding out the specifics on any LFA feature is made much easier by simply referring to the owner’s manual — here’s what it has to say about Launch Control:
[Snipped details from the owners manual since its in post#1]
No question, all limits placed on the Launch Control are necessary and fully in line with other supercar manufacturers. This is a system that places a lot of stress on the transmission, and these controls will prevent any permanent damage.
(Although the Launch Control upper limit isn’t specified, I have it on good authority that the maximum is well above the range of normal usage — especially given its little use outside of the track. At the very least, it will avoid situations like this from happening again in the automotive press.)
Update: Edited for clarity.
[Source: Lexus]
Originally Posted by krew
Although we’ve known for some time that the Lexus LFA is equipped with Launch Control, details have been far & few between. This system, which optimizes fast starts off the line by holding the transmission at a higher RPM, is essential for racing and providing the best track times.
Now, with the first production models now reaching customers around the world, finding out the specifics on any LFA feature is made much easier by simply referring to the owner’s manual — here’s what it has to say about Launch Control:
[Snipped details from the owners manual since its in post#1]
No question, all limits placed on the Launch Control are necessary and fully in line with other supercar manufacturers. This is a system that places a lot of stress on the transmission, and these controls will prevent any permanent damage.
(Although the Launch Control upper limit isn’t specified, I have it on good authority that the maximum is well above the range of normal usage — especially given its little use outside of the track. At the very least, it will avoid situations like this from happening again in the automotive press.)
Update: Edited for clarity.
[Source: Lexus]
Last edited by Joe Z; 01-27-11 at 09:59 AM.
