2003 Lexus GS300 Questions

All 2003 Lexus GS300 Questions

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Will start but dies again
shop diagnosed as replace exhaust manifold,catalyatic converters,center pipe,oxygen sensorsX3 and gaskets -$3675.00 Showing code P0430 catalyst efficiency below threashold This happened a week ago and are ...
This ck enging and vsc light comes on then goes off and after a few days it comes on again.cant figure it out
This ck enging and vsc light comes on then goes off and after a few days it comes on again.cant figure it out
stater continue to run with ignition off
signal for bad brake lights is on.I checked bulbs, replaced 1.aignal wont go out even though all brake light bulbs are good. PLEASE HELP
the signal for brake light bulb replacement stays on.all bulbs have been checked.they(1)changed,all brake lights working. brake light signal still on.I think its a electrical problem. PLEASE HELP
A warning light of the rear trunk area of the car is on but thelights all work, what can it mean?