does anyone else dislike the Brake Assist?
06-06-06, 07:18 PM
#16
Originally Posted by t0e
And by the way, when ever im breaking i always down shift using the step tronic (sports mode) gear shifter... It helps saves your breaks, and it give me greater stoping ability with out having to press on the break so hard. I think its Grrrrrrrrrrrrrrrrrrrrreat 
06-06-06, 07:23 PM
#17
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Originally Posted by tonyxcom
Yeah I mean why wear out your brakes prematurely when you can wear out your tranny first.
06-06-06, 08:01 PM
#18
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Originally Posted by tonyxcom
Yeah I mean why wear out your brakes prematurely when you can wear out your tranny first.
06-06-06, 08:16 PM
#19
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Originally Posted by Ramon
lol... As far as the BA issue, I first noticed it when my dad purchased his (then new) 2001 LS430. Whenever I'd be on the brake, then let off, and then get back on them again, it would grab very hard, even if the 2nd brake application was not sudden or hard, it would grab pretty hard. I did eventually "learn" the system and have not noticed it as being an issue on my IS.
06-06-06, 08:20 PM
#20
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Originally Posted by al503
That's not brake assist. Most pads operate best at higher than ambient temps. Your first brake application is just warming them up closer to their optimal operating temp. That's why they grab harder on the second application.
06-06-06, 08:44 PM
#21
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I have found it annoying to be honest....
Slowing to lights there is a noticable "clunk" of the tranny dropping a gear. I wish there was a way to disable it...... It's getting on my nerves.
Slowing to lights there is a noticable "clunk" of the tranny dropping a gear. I wish there was a way to disable it...... It's getting on my nerves.
06-06-06, 08:49 PM
#22
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Originally Posted by unit74
I have found it annoying to be honest....
Slowing to lights there is a noticable "clunk" of the tranny dropping a gear. I wish there was a way to disable it...... It's getting on my nerves.
Slowing to lights there is a noticable "clunk" of the tranny dropping a gear. I wish there was a way to disable it...... It's getting on my nerves.
but I agree it could be smoother than it is in certain braking conditions. Ideal in my mind would be downshifting only after a certain RPM is reached, something 300-500RPM lower than it currently is. That would alleviate the clunk.
06-06-06, 09:53 PM
#23
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Originally Posted by al503
That's not brake assist. Most pads operate best at higher than ambient temps. Your first brake application is just warming them up closer to their optimal operating temp. That's why they grab harder on the second application.
I've also expierenced the tranny "cluck" when slowing down. My guess is that it will be ironed out for the 07 model.
06-06-06, 09:56 PM
#24
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Did you guys bother looking at http://www.brakeassist.com/. Then you just MIGHT be able to put an end to this, as what you're experiencing has nothing to do with BA. 
06-06-06, 10:06 PM
#25
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Here's a short clip of EBD and BA in action. This may disspell some of the frustrations here:
http://www.lexus.com/models/gs_hybri...s/ebdDemo.html
http://www.lexus.com/models/gs_hybri...s/ebdDemo.html
08-03-07, 06:15 AM
#27
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BA and the trans shifting is driving my wife nuts. She wants to get rid of her brand new 07 IS250 because of it. She had a BMW X3 before and finds it really annoying.
I am going to clear the ECU and see if that helps. If not, I may have to take a hit and trade the IS (its leased) in on another BMW.
I am really surprised Lexus would taint the driving experience like this.
I am going to clear the ECU and see if that helps. If not, I may have to take a hit and trade the IS (its leased) in on another BMW.
I am really surprised Lexus would taint the driving experience like this.
08-03-07, 06:37 AM
#28
BA and the trans shifting is driving my wife nuts. She wants to get rid of her brand new 07 IS250 because of it. She had a BMW X3 before and finds it really annoying.
I am going to clear the ECU and see if that helps. If not, I may have to take a hit and trade the IS (its leased) in on another BMW.
I am really surprised Lexus would taint the driving experience like this.
I am going to clear the ECU and see if that helps. If not, I may have to take a hit and trade the IS (its leased) in on another BMW.
I am really surprised Lexus would taint the driving experience like this.
08-03-07, 07:18 AM
#29
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I drove the car last night and I am noticing it every time I stop. It feels like the pedal is being pressed from under my foot.
Her other complaint is the shifting.
Her other complaint is the shifting.
08-03-07, 08:14 AM
#30
That sounds like a warranty issue. I don't think brake assist has anything to do with the brake pedal, and it certainly shouldn't do anything on a regular stop. Brake assist only activates when you rapidly lift your foot off the gas and hit the brake pedal with moderate force. In those cases, the brake ECU assumes you are braking for an emergency, so it increases the brake force to the max. It is quite startling when it happens.