AFCHH

I have an 05 RX300 running on LPG. The engine management light and the VSC light are on constantly. Until the computer is used and resets the settings. But the lights come again on after a while. We have this down to the oxygen sensors around the cat and the default setting being too low. Lexus don't want to know. They just want to change everything until I have a completely new car. Does anyone have any ideas?

My 05 rx300 is on lpg. The oxygen sensor keeps making the crs light come on along with the management light. In fact, they are both on permanently. Does anyone know what to do to stop this.

My 05 rx300 is on gas. The engine management light and the vsc light is on constantly. I am told this has something to do with the oxygen sensor in the exhaust system. It can be reset but comes on after a short time. Does anyone have any ideas how to keep these lights off.