Surprising experience with PCS on IS350
#1
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I posted this two weeks ago when I did the Lexus Event in NY (Sep 17) but in case people missed it:
I drove a fully loaded IS350 around the track.and at the first chicane I heard a RAT-TAT-TAT-TAT-TAT sound and the seatbelt tensed up and tried to strangle me. After getting over the surprise and NOT crashing the car due to the sudden noise and constriction I guessed the car had PCS (Pre-Collision System) and my gentle manuevers around the course had made this kick in (no sign of VDIM in action that I could tell). I wasn't going that fast or doing anything too crazy at the time.
Afterwards I confirmed with the event people that the car I drove did have PCS and that the professional drivers were setting it off non-stop earlier that morning. One of the event people thought you could turn of fthe seatbelt tensioner but didn't know how to do it.
In any event I would suggest anyone who wants PCS (I don't) to try the IS350 demonstrator out in a car park to see if it is compatible with their driving behavior before purchase.
I drove a fully loaded IS350 around the track.and at the first chicane I heard a RAT-TAT-TAT-TAT-TAT sound and the seatbelt tensed up and tried to strangle me. After getting over the surprise and NOT crashing the car due to the sudden noise and constriction I guessed the car had PCS (Pre-Collision System) and my gentle manuevers around the course had made this kick in (no sign of VDIM in action that I could tell). I wasn't going that fast or doing anything too crazy at the time.
Afterwards I confirmed with the event people that the car I drove did have PCS and that the professional drivers were setting it off non-stop earlier that morning. One of the event people thought you could turn of fthe seatbelt tensioner but didn't know how to do it.
In any event I would suggest anyone who wants PCS (I don't) to try the IS350 demonstrator out in a car park to see if it is compatible with their driving behavior before purchase.
#4
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At least you didn't end up almost getting killed like the one C&D editor that drove the E90 with the ABS light on, then did a 360 beginning around 60 mph
Strange though
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Strange though
#5
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No surprise here. To the sensors of the PCS, those cones you were approaching in every corner of the autocross courses are just as potentially dangerous as a pole or a wall, and thus the PCS took the precaution and reacted accordingly. In a real world environment this makes a lot of sense (imagine hitting a cone on a highway...not exactly good to your car
), but I agree that there should be a switch of some sort to turn it off temporarily, along with the VDIM and the likes, to allow the car to perform un-intervened when the driver desires to do so.
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#6
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Originally Posted by XeroK00L
No surprise here. To the sensors of the PCS, those cones you were approaching in every corner of the autocross courses are just as potentially dangerous as a pole or a wall, and thus the PCS took the precaution and reacted accordingly. In a real world environment this makes a lot of sense (imagine hitting a cone on a highway...not exactly good to your car
), but I agree that there should be a switch of some sort to turn it off temporarily, along with the VDIM and the likes, to allow the car to perform un-intervened when the driver desires to do so.
![Uhh...](https://www.clublexus.com/forums/images/smilies/1387914497.gif)
PCS engaging in autocross course makes perfect sense, although original article just mentioned track and not cones. From PCS view, cone is not very different from pole, or dog or anything similar.
In general, it is not like you would buy an IS350 for autox, and thats the only reason I can forsee that PCS would turn on frequently. If you are buying it for autox, then you better make sure there is an way to turn VDIM first.
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Originally Posted by enigma354
How interesting---weird. So it was a 'residual effect' of the previous drivers? The car was 'primed' to engage the PCS collision procedure?
Originally Posted by spwolf
PCS engaging in autocross course makes perfect sense, although original article just mentioned track and not cones. From PCS view, cone is not very different from pole, or dog or anything similar.
In general, it is not like you would buy an IS350 for autox, and thats the only reason I can forsee that PCS would turn on frequently. If you are buying it for autox, then you better make sure there is an way to turn VDIM first.
In general, it is not like you would buy an IS350 for autox, and thats the only reason I can forsee that PCS would turn on frequently. If you are buying it for autox, then you better make sure there is an way to turn VDIM first.
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#11
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I just want to clarify with you guys, these cars that are being used at Taste of Lexus are pre-production meaning you will unfortunately experience some quirks and bugs during your experience.
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