Lee719

Hello everyone , I'm new from this forum , from toronto , first of all just want to say hello to you all , recently just purchased 2014 IS350 F sport and i love it, but just wondering if anyone came through this problem ? when start up the car and the engine do have little vibration i can actually felt from the seat but dosent happen to often , is this normal or I'm just too sensitive , because I never had this problem with my old 06 IS250 AWD , what is the problem I'm facing lol

Thank you very much

arentz07

Congrats on the new car!

In my 2016 IS 300, which has the same engine as the 350, there is some vibration at idle in two scenarios:

• when the car is cold-started and is idling high
• when I am stopped at a light and the AC compressor and heater are completely turned off, which reduces the idle to about 600 RPM.

It's been like that as long as I can remember. Do these situations describe what you're running into, or is it something else?

Lee719

Thank you very much for reply Arentz 07 , I would say the cold-started and idling high , and I dont recall happen when im stopped at a light and AC off , did you have chance to bring back to dealer to look at it ? I called Lexus for Diagnose but they will charge me $120 something per hour lol , well I just step into the other shop they cant detect anything from the computer , so I really dont know if i just leave it or Lexus will look up for this with no cost ... lol but its kinda annoying sometime

arentz07

I haven't done so, since it hasn't seemed like the car was broken or anything But, AFAIK there was a TSB to raise the idle on the car to eliminate the roughness? Maybe someone else on the forum can chime in. Honestly it doesn't bother me because it's once in a blue moon I actually notice this.

Crossxup11

I can confirm that what you're experiencing is normal. I have a 2015 IS350, and when I first started experiencing that I thought i had bad engine mounts (dealer checked them for me as a courtesy).
Turns out our engine just isn't a morning person.
Nothing to worry about.

Sybaritic

Based on my experience with direct injection engines, I think these vibrations seem to be normal despite how un-Lexus like they feel. I get the same vibrations. Feels like there is misfire, but I remember experiencing these same vibrations in Kia fully-direct Injected engines (our IS350s are half direct and half port injection).

Dreamcast

2016 is350 here and i get the vibrations too. Happens every few seconds during idle and even after the engine is warmed up. Revs dip slightly when it happens. Its noticable especially after driving a renault megane which you couldnt tell the engine was turned on.

Lee719

Thank you guys for the reply , I think I would just take it easy and relax a bit now : )

volthause

Anyone concerned with their 3IS vibrating is free to borrow my '97 4Runner for a week. That will definitely reset your vibration meter.