2009 Yaris - Cabin Vibrates/Shakes When Stopped in Drive (D) at Signal Light!?

[HarrisAfridi925]

Hi all,

2009 with 115k miles. My ONLY gripe with it is that it shakes and vibrates when in Drive (D) stopped with brake depressed at a signal light. Though not excessive, the vibrations & shaking are noticeable enough to be felt through the seat, steering wheel, and headrest.

Vibrations & shaking go away when I shift to N or P. I also activated handbrake while in Drive (D) and let go of brake, - didn’t make it worse/better. Activated AC - didn’t make it worse or better. Not sure what could be causing this? Replaced all the motor mounts and cleaned TB.

Car idles perfect in Park & Neutral. No issues when the car is at speed and in motion. Just when that brake is depressed and stopped in Drive (D). My only logical guess is something going on with the torque converter? But even that seems so very unlikely.

Any thoughts? Love this car and want to make it as good as it can be. I was told this is a “common thing” for Toyota and especially the Yaris. But that just doesn’t seem plausible to me.