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Check Engine Light = loose gas cap?

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#1 ·
Did you know that leaving the gas cap on loose (not tightened until it makes a couple of clicking noises) can make your check engine light come on?!?!?

I won't tell you how I found out...
 
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#3 ·
Speaking of turning off the check engine lights whats the best way of reseting the ECU in the IS300? Not that I need to yet. I know in my previous car, Mitsu Eclipse, I always got the check engine light because of all my mods and to reset it I just had to pull a specific fuse for a couple seconds and put in back in.

Rather then yanking battery cables and loosing all the memory stored in the radio and resetting the clock.
 
#4 ·
My last car - an MB SLK 230 - did the same thing with the "check engine" light...thanks to that convoluted plumbing matrix known as the "pollution control system."
But, whenever it came ON, it took a trip back to the dealer to shut it off - even though nothing was actually wrong.
Yet another reason why I've returned to Lexus.
 
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