Lexus IS 2014+ :: 2015 IS350 Clumsy Idle - Fluctuating RPMs
Nov 3, 2015
I sometimes have a weird idle. When my car is cold the idle is fine. When the car is warm the idle is fine. The idle only gets weird sometimes when I drive the car, park it for an hour or so, start the car again (temp gauge is about half way from complete cold start to complete warmed up) and I get a fluctuating rpm tach. It bounces around 50-75 rpms for a while. You can definitely feel it in the car and if you stand behind the exhaust you can here it slightly burp/hiccup. The car has 16k miles on it and it's a 2015. The gas mileage and performance has not changed. I don't know if it has done this since day one as I usually have my radio on. I heard it once now I make a point to see if it does it. I also don't have any CEL on.
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I've been noticing that my 15 RCF idles a bit weird. Regardless if AC is on or not, the idle seems to always be fluctuating a couple hundred rpms - almost barely noticeable. Usually 500-700rpm back and forth. Doesn't really bother me but I wonder if it's just my car or if all the RCF has the same issue and if it was a sign of a bigger issue.
Doesn't matter which mode I'm in either. Of course it's only noticeable when there is the actual needle stick on the RPM gauge (eco mode and the gauge with the yellow doesn't show well).
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Faint humming/whistling noise coming from the drivings side of the motor. I can hear it when I put my head next to the drivers wheel well, and most certainly from that side of the motor when the hood is popped. It's not super loud, but it is noticeable. I know we have Direct injection motors, so I know that ticking is completely normal. Am I overlooking this and being paranoid? Car has 2100 miles on it. I don't know if it was there when brand new.
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Any link to a video on how to adjust the headlight height on a 2015 IS350 F-Sport?
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I just bought my car a few weeks back in July. I noticed that the seats appeared to be hotter with the A/C on. It turned out, I was right. With the seat heaters OFF and A/C ON, the seats would get hot.
I've posted an infrared video here .... Infrared showing seats of 2015 Lexus IS350 F-Sport - YouTube
For reference, I also made a video of normal heating (e.g., seat heat ON) ... Infrared of normal seat heating - 2015 Lexis IS350 F-Sport - YouTube
And you can see that the heating areas are different.
The dealer says this isn't happening. 2015 IS350 F-Sport
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I have 2015 IS350 F sport. At 400 miles I started hearing this static sound which seems to come from the center or the driver side dashboard. I don't hear it if the car is not moving but as soon as I hit 5-10 mph and above, it becomes audible. I tried pressing the dashboard to see if there are loose areas but couldn't find one. Also, I thought they may be coming from the center speaker but the sound doesn't change whether the stereo is on or off. Of note, it is more audible along bumpy roads.
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So I got my IS350 F-Sport AWD a couple weeks ago and I'm loving it so far. I just passed the break in period a few days ago . I just had a question about something happened today though. Basically I was on the highway and I was coming off of an off-ramp at about 90 km/h (~55 mph). This was a relatively sharp ramp but I was slowing down as I entered it. Anyway, the car started beeping and I saw a red message in the center of the gauge.
Unfortunately, it was there for a split second and I didn't get to read what it said. Later, after parking the car, I checked the "messages" view in the gauge cluster and there was nothing there. There was also no check engine light or anything on after either. The car seemed to drive normally before, during, and after that. Was it the VSC/TC system? Or is it something else?
I believe this is what I saw. Is it possible for it to have detected the curb coming up and that I was going fast? Does the Canadian F-Sport 3 package even have a PCS? I don't see anything about a PCS when I look at what's included in the package, but I know that it does have the radar cruise control/rear cross-traffic alerts so it doesn't seem out of the question that it could detect the curb.
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I am curious about the new 2016 IS3XX cars - it looks like the mileage is the same, displacement the same, engine the same (?) so what do they do to the car to reduce the HP by about 50? Seems strange that anyone would buy a 300 - do they want less HP and torque?
I wonder how hard it would be to reverse the "detuning" to get he IS300 up to 306 HP?
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3IS 2014-2015 1/4 miles time and mode?
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As winter comes in full force to NYC I've been experiencing some rough idle on my is350 AWD even after warming up my car for about 3-5 min. For ex. when I am at a stop light and have my foot depressed on the brake it feels as if the engine is revving higher than usual as if the acceleration pedal is lightly being depressed while I am braking. Is it just due to the cold weather?
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I noticed not too long ago that when I drive my car after being idle for a long time, the gear acts weird. Bought the car in July 2015 and has only 2,600 miles on it.
Usually in S or S+ mode the gear doesn't go past 5th gear on local. However, in Auto mode it goes up to 8th gear when I am not even accelerating that hard. In manual shift mode, the gear is delayed by about 5 sec, using the paddle shifter. It happens once and it goes back to normal.
I have not talk to the dealer yet. I wanted to get a proof before I do, so they dont tell me nothing is wrong with the car.
Video for reference: IS350 Issue - YouTube
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So I've got 13,375 miles on my car and I was at an intersection and when I put the car into sport mode the check engine light came on and now it won't go off. My car isn't displaying any other messages or lights and the gas cap was definitely on all the way. What could trip it so early in the life cycle, had the last scheduled maintenance 3 months ago too???
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I am hearing some whine engine during acceleration. Is this normal?
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The car is about a week old. Today, the NAV system (ML version), re-started a few times and then shut completely off. Re-starting the car does not work. Got a totally "off" screen and no sound. 2014 350?
Is there some way to reset it or turn it back on? I can't imagine that a brand new Lexus would have this sort of issue.
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How to turn off the maintenance required light on a 2014 IS350? I can find info on a 2013 and older but nothing on a 2014.
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Today I noticed that the flat part of the dash (under the nav screen and above the clock) is popping up. It's not popping up a ton, but I noticed it today. When I push the front of the flat part down, it goes perfect and fills the tiny gap between the clock and that flat part of the dash. When I let go, it makes a sticky sound as if the glue or adhesion is trying to stick. Like I said, it's not totally noticeable, but I can notice it and it drives me nuts
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So today during my drive I looked down and noticed my check engine light come on! The car has 7k miles on it!! All I've done to it was the ARK cat back and k and n drop in filter. I'm guessing O2 sensor but it's crazy to think a car with 7k miles had a bad sensor. Noticed the car was running a little rough lately but noting too crazy.
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2014, IS350 F-Sport owner. Noticed the steering become resistive at higher speeds?
When I drive at freeway speeds (70-80mph) for, say, >10 minutes, I get a very large increase in the resistance in the steering. This is combined with a complete lack of caster response, resulting in very difficult control.
This occurs in all modes, and once it happens I have to come to a complete stop before the steering once again feels normal and the caster response returns.
I've had it in the service dept. since day 4 of owning the car, but no "error code = nothing wrong". They're now trying to convince me that it's supposed to work this way because of VGRS, but I'm calling B.S. on that. The car's handling and performance are decreased at higher speeds; definitely NOT what an F-Sport car is designed to do...
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Just received my car back from the service department and noticed a slight clicking sound that isn't too loud, it's mechanical sounding.. Quieter than a ball point pen retracting I'd say. It clicks every quarter of a turn while stopped and low speeds.
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Model: 2014 IS350 F sport AWD
When I go over a medium sized bump at moderate speeds, there is a loud thump coming from the trunk area. My trunk is empty and everything looks fastened down securely. The only thing I notice when I check the trunk, If I hit the center of the floor board, it imitates the sound almost identically. I checked the spare tire... everything.. In my trunk is the floorboard and the lexus carpeted mat.
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I noticed just recently my 15 IS350 F- Sport doesn't have elapsed time in the multi information display. Instead it has 2 different average fuel economy spots under Driver info 1.
I remember seeing it on a 14 IS base, is this something different 15 or F-sport? Is there a setting to get it back?
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