Hi,
I have an IS250 and the check VSC has come on once more, it originally came on about 2 years ago but reset ok, the dealer charged me £400 to cure it last week but it seems they have not done so as it has come on once more, they say it's running rich on one bank but don't know why, they have has the injectors out and checked those, oxygen sensors are ok but it's come back on, they put 2 lots of fuel treatment in and told me to give it a try! Is there an independant specialist I could speak to to try and get to the bottom of this please? I don't want to spend thousands chasing the fault only to not find a cure. The car is 8 months out of warranty with 17000 on the clock and Lexus customer relations don't want to know about diagnostic costs, they did however suggest they may replace the defective parts if any are found as a good will gesture. Is this a normal Lexus reaction to such situations please? Also the engine light is on and the traction control off light is on, the car is running normally.