LionAcura

Have 160k miles on our 05 TL and recently wife has been driving normally in cruise control when out of nowhere, without braking/turning/accelerating, she says there will be a very short but strong shudder or vibration coming from the wheels and it knocks her out of cruise control thus decelerating until she normally returns to accelerator pedal use and instantly the yellow triangle warning light and exclamation and the VSA lights come on. Other times those lights just come on with no shudder/vibration and then go off for a few days. Yes, I’ve checked the compliance bushing and they do indeed have cracks in them but no noise or issues when turning or driving related to that, right?
any help appreciated. Have looked at all light posts and nothing mentions shuddering issues

gatrhumpy

iTrader: (1)

Is it the VSA modulator perhaps?

LionAcura

VSA modulator would MAKE the car shudder??

Jackass

With the lights coming on there is a sensor triggering somewhere. Get the codes pulled to see what isn't happy. A mechanical issue like the bushings will not make the cruise disengage nor the VSA light come on. This has to be electrical in some manner. A bad/failing sensor or something like that.

LionAcura

Thanks yeah I had OReilleys try to read the code and nothing came up at all. Is their code reader junk?

csmeance

when is the last time the brake fluid was replaced? How's the condition of the battery? the shuddering/grinding is ABS pump/VSA modulator working. If the fluid is very dirty, there's a bad brake component or sensor it'd trigger the system and throw a temp error. Same with a bad battery.