Check VSC engine light

[Stef K]

Hey there,

I've intermittently had the Check VSC light come on and the associated Engine light come on. The car is serviced at Lexus, they clear the fault and it comes back and then sometimes clears itself.

At the latest service I told them I want it fixed...hard to sell a car with an engine light, which BTW does not affect the car performance at all.

They diagnosed the fault all day and....they came back that the knock sensors are faulty and need to replaced, parts from Japan and....it's $4500...

Has anybody encountered this issue

[Gibo]

I had the same issue with my IS250 and it may sound funny but it was the fuel cap. I changed the cap and the problem stopped. Before the cap arrived I cleaned and moistened the seal on the cap and that seemed to help