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TC activating even when off?
This is seriously frustrating. It seems that even with my driver-aids all off (hold down TC button 5-seconds, 2 lights on cluster) the TC is taking over to some degree when I step the rear out. It seems that unless I fully commit to breaking the rear it will activate and grab.
For example. 2nd gear - turning at 3/4 lock and on the gas - I put the throttle down and steer the ass out. As soon as it breaks the TC light flashes and the car is immediately back in control. I don't like this. Dafuq Toyota? |
Suppose to hold down the TC and the VSC button down for 5 seconds. All 3 lights show up on the gauge at 1st then switch over to just 2 lights on
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Might want to get that looked at. In mine I just hold down the trac button for a few seconds and it's fine. I haven't heard of holding them both like Mr.Jay suggested, but I don't have the manual in front of me right now.
edit: stupid question, but are you at a complete stop when you try to turn it off? I know in mine if you shut it off while moving the lights will come on, but it doesn't feel like it's totally gone. |
Really? Have I just been holding down a extra button?
I'm going to have to give this a try after work now... |
OP, are your two lights both yellow, or yellow and green?
go to your dealer, nothing is supposed to grab if both yellows are on. |
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VSC is just to turn sport mode on and off. also, you can do this as the car is moving... i've forgot to turn it off many times at the autocross and had to disable it mid course. |
There is at least one report of someone on a track seeing the TC light flash when everything was disabled and feeling like some part of the TC was kicking in. Others have said they have seen the light flash but nothing has really happened with regards to the TC kicking in. I haven't really experienced the car doing anything or I probably wouldn't have spun a couple times that I did. :)
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Its easy to recreate. From a stop do a U-turn even with system off you will get the slip light to flash probably just reporting slip.
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when i went drifting, i saw these light come on and tc was kicking back in.
everything was off, and after a while beeing sideways when i was about to sitch it cam, i had to pull the e-brake to keep the drift and do the apex. |
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You have to be going <30 mph to turn it off, at least thats what ive experienced. |
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I also can't fully disable TC when in moving at a quick rate just when I'm putting along can these settings be changed |
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I've turned off mine mid course in autox as well, and I can confirm it was really off because I immediately went around a 180 degree turn pin sideways in the wet.
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k, so
OP and a few others, you guys got faulty cars so go check them out yesterday i accelerated in 2nd until redline (so roughly 95kph) and during my WOT acceleration i held down the TC button. In about 3-4 seconds both traction control and vehicle stability control lights went on (meaning they are now disabled) During subsequent successful attempts at breaking the rear loose produced no flashing lights. In my opinion and assumptions, this is working as intended. So either your electronics are malfunctioning or you're doing it wrong. Remember that pressing TC once and VSC once so that all 3 lights are on does not mean that you have disabled your system!! That just means that 1) your traction control is off UNTIL you pass 30kph, this option was specifically designed to get out of snow and mud by hammering down and 2) you are now in VSC Sport Mode, which means all the stability nannies (including traction control) are still ON but engage a bit later) |
Hello,
I was finding this same thing happening to me on some windy roads here. What we are seeing with VSC & TRAC off is yet another system activating, Auto LSD. If one wheel comes off the ground/looses traction it applies the brake to that wheel wheel to transfer the power to the one on the ground/more traction. Used in Toyota trucks and SUVs. This is what I found after researching the repair manual to turn off VSC, TRAC, and Auto LSD. What you need to do is put the vehicle in "inspection mode". This mode is recommended for diagnosing safely on a dyno. (Per the repair manual). I later found out this was called the "pedal dance" by some fellow Lexus friends I have. Now how to do the so called pedal dance, First of all, "the disclaimer" Myself and the manufacture WILL NOT take any responsibility for STUPID things you do while in inspection mode. Plus, I am sure the EDR is watching.... These next steps need to be completed within 30sec. So it may take you a few times to get it right. It did for me, but I can't dance so go figure...... Hehe! Step 1: eng. off in neutral on MT, park on AT, parking brake off on flat ground. Step 2: start engine apply the parking brake (leave on) Step 3: depress the brake pedal twice and hold down on the third. Step 4: while still holding the brake pedal, release and apply the parking brake twice. Step 5: with the parking brake still applied depress the brake pedal twice. The VSC and TRAC lights should illuminate. (BTW ABS is still active) Shutting off the ignition and back on will reset it back to normal. Have some SAFE fun without the auto LSD slowing your exit out of a turn! Sent from my iPad using Tapatalk HD |
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Why would I need an auto LSD function when the car has a mechanical LSD?
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I had my car at the race track a few weeks ago and was grip driving and full lock drifting around the track.
I held down the trac off button down until I got both light on dash (Trac & VSC off), and as I was both grip and drift if I was going through a long drift and long hard corning on occasion I would catch the trac light flashing coming on the dashboard. But I didn't feel any electronics kick in, but then again I have all 4 tires sliding and using us as much grip as possible, so if it is kicking in I might not notice it (maybe). But I did forget that I had ABS and put my car into the gravel pit.... So I am assuming I can either dissconect a Wheel Speed Sensor or ABS sensor to take car of this problem? |
Our cars have a Torsen style LSD (torque sensing) which is not full locker (good for daily use). These are great for the track also, but when you put it into the real world it has its down sides. Driveways are probably the most common place you need the auto LSD system. I have read some post discussing this same thing and they didn't know what the noise was.
I have a video of me activating inspection mode, but it is on my computer. I won't be back for a couple of weeks. If someone hasn't posted one already I will put it up. |
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Wonder if all the tuners are using this on the dynos. Didn't see it mentioned.
Sent from my SCH-I535 using Tapatalk 2 |
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I'll try it at the next autocross. |
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I went over the procedure again last night. Start the car with the e-brake ON first. It worked for me and I was able to repeat it twice in a row. |
Update: the pedal dance seems to best work when the engine is relatively warmed up.
No matter how many times I try with a cold start, the traction controls won't want to turn off. |
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I hate ABS..... |
I haven't had any issues with it comming back on, other than the light that tells you that you lost grip.
I also noticed that you can't have TC fully off and VSC in sport mode. If you turn TC off (5sec) the hit VSC it will kick the TC back as if you only pushed the button. I was at a high speed autocross and all I did was hold my TC for 5sec to get both off lights. After that I could but the rear of the car wherever I wanted it, and I have some slides going faster that 30mph |
I have had NO troubles with holding down the TRAC button until the lights turn on. It can be done at any speed.
Here's a video of my sliding the car with no electronic intervention: [ame="http://www.youtube.com/watch?v=_Jw2_Krx_1g"]7/1/12 OVR SOLO (BRZ Drift) - YouTube[/ame] |
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it only worked for me when the car is warmed up.. also i started with the ebrake on.. but dont get me wrong isnt this the same as holding the trc button for 10 secs? |
mine shuts off and lets me do donuts..
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The ECU sends ABS pulses to the loaded rear wheel in this situation even with all electronic aids turned off. That is what people are talking about when they see the extra slip light flash and feel the car only reach a certain slip angle. I have followed the 'auto LSD disable' feature that 086A posted and it seems to work. Most guys pushing these cars on the track are either pulling the ABS fuse or using a VSC cut like this in order to disable it without impacting ABS. http://www.autofactory.jp/product/to...?mode=s&seq=14 |
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It fully disables for me on track without doing anything beyond holding the tc button down for 5 seconds.
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