RX350 Vehicle Speed Control issue!

[PCM]

I wonder if anyone can help or share their thoughts ?

 About 2 years ago, I was driving my wife’s 2008 RX350 – joining a motorway.

I remember speeding up on the slip road, joining, and found the car still accelerating, though my foot was off the gas pedal.

I think I braked, gently, and all was well.

About 2 years later ( today ), my wife was driving on suburban roads.

She found her car accelerating – quite a lot.

She braked, and was quite shaken.

The car did slow down.

Having trawled the internet, it appears it is a known RX350 issue – certainly in the US.

It seems to be described as a, ‘Vehicle Speed Control’.

I could not find any indication of a fix.

It’s not cruise control, it’s not car mats…

Does anyone have any thoughts at all?

[BachelorDays]

Happens once every two years.  Bravo!

I'm sure if it was an ECU issue it would surface more often and for more people.  So probably not this.

Problem with the pedal/pedal assembly/wire?  No harm in a visual around the pedal and under the bonnet.

Cruise control switch et al.  The "et al" includes the clock spring.

Biggest issue is - how will you know you've fixed it, except if you find something obviously out of place?

[m4rkw]

Was the cruise control system activated when it occurred? If it was not activated and the light wasn't on on the dash then I'd say it's probably not related to the cruise control system but who knows.

Since this is clearly a safety issue I would suggest taking it to a specialist and having them check all of the things mentioned by @BachelorDays.

[PCM]

7 hours ago, m4rkw said:

Was the cruise control system activated when it occurred? If it was not activated and the light wasn't on on the dash then I'd say it's probably not related to the cruise control system but who knows.

Since this is clearly a safety issue I would suggest taking it to a specialist and having them check all of the things mentioned by @BachelorDays.

Nope. No cruise on.

It will go into a garage.

And yes, I will be having a good pedal check too!