Hey everyone.

I have a 2011 IS 350 with about 1k miles on it. Whenever I start the car cold and drive off, the car's idle will rise to 1k when I'm at a complete stop in D. Since the idle rises, I have to hold the brakes harder to prevent it from rolling forward. This only occurs when the outside temperature is below 40 F. I know the car is warming up but none of my previous cars does this. Once warmed up, idle returns to normal at around 550-600.

Is this common for the 350?

 

I wouldn't say its completely abnormal. I'm in Southern California and if is in the high 50s / low 60s my 350 will idle just above 1k rpm. And then at .5k rpm after warming up. I always warm up the car, you don't have to but I recommend it. Just the way I was taught, I suppose.

 

I drive off 30 sec to 1 minute after starting the car. The idle rises from 600 to 1k at a complete stop while the engine is still cold. This has never happened in any of my previous cars so it seems a bit weird to me

 

I have the 2012 IS350 with about 700 miles on it. It does the same thing. I don't know if it is "normal" for the IS350 or not but it can be eyebrow raising when I let go of the brake and the car pulls out of my parking spot without ever touching the accelerator. I'm due for my 30 day/1000 mile service and I plan to ask about it then.

 

Happens to my 08 IS all the time, temps heres are easily 0F or below everyday and the auto roll pulls pretty fast when cold, if I tap on the brakes lightly at a stop sometimes it continues to roll a bit. During the summer, temps 80-90+ it's not a problem, so I guess it's just the nature of the car warming up.

 

Yup that's normal

 

When the car is cold and outside is cold, mine does that too..

 

Normal most if not all cars do this on cold start up. Just drive it till it warms up it better than to let it sit and warm up.

 

Normal. Also does that on my 250.

 

It happens. When I leave my house and wait on the first stop light on my street, after coming to a complete stop the RPMs go up and my car jerks forward a bit and I got to press the brake harder. Only does this when it's really cold for the first few miles or so.

 

Happens to mine when its cold outside too, but I find if you let the car warm up for a couple minutes before driving, I don't have any issues with it at all

 

this exact situation happened to me once at 35k miles.. i dont know what went wrong but after but the only thing i can think of was because i messed with the traction control earlier.. dont know if thats the cause of it but yea.. :/

 

Thanks for everyone's input. Can't wait for the warm weather to arrive

 

Yup, which is one of two things i HATE about this car. I clocked mine at just under 30 MPH on a slight incline after leaving a stop light - with NO PRESSURE ON THE GAS PEDAL! I logged a few complaints including with Lexus Customer Care (or whatever) and the only result was to bring it to the dealer so they could tell me it's normal. I tell you I hate this. One of the reasons my brakes only went 24K. I even have the rear tires spinning in my garage while braking to a complete stop. Why does Lexus have to have such a ridiculous setup? Every other car I've owned would go to high idle - but not nearly as sever as this.

BTW the other thing I hate about this car is the stability control/traction control. Simply dangerous. Why in hell would they allow the car to cut the throttle because the rear tires slip a bit on the cross-walk paint while I am trying to use about a quarter of the 306 HP to make a left turn onto a busy road ? Cripes, it's an accident waiting for a place to happen.

Other than these two *****es, it's bliss .

 

^
I see two possible probelms in terms of the traction control.

- The first problem is that the car does not have true LSD, it's open so it's going to behave differently when the traction breaks and will cut hte power. LSD does not do that.

- The second is, leaning how to put the proper power down on the appropriate road surfaces. I've intentionally made the power cut out the 250/350 and FWD for overspinning tires on paint for kicks. Under nomral driving, no issues at all if one knows how to use the throttle.