Malfunction Indicator Lamp (RX-300)

[Amadeus74]

At around 48,000 miles, the "malfunction indicator lamp" on my 2000 RX-300 started coming on. It currently stays on for two or three consecutive driving sessions, then does not come on for the next one or two driving sessions. It then repeats this cycle of coming on and then not coming on.

The manual indicates either a) fuel tank is completely empty, b) fuel tank is not tightened securely, or c) problem in engine or automatic transmission electrical system.

It is not (a) or (b). My question is this . . . is this another planned gimmick scheduled to light up at some predetermined time in order to get me to bring in my car to a Lexus dealer for a potentially unneeded service bill? Or is this light something I should take seriously, and therefore schedule an appointment wirh my local authorized Lexus service station?

In other words, is this light really a big deal?

Thanks for anybody's assistance and comments. This is a great site.


Amadeus74

[98CamryLE]

That light could also mean a problem with the emission control system.

Try going to Autozone and have them hook their computer up to your car. (they usually do it for no charge) the car will give their computer a trouble code(s). Either they can look it up, or you can search online for it.

To your question if the light is a big deal:

Right now, you don't know. It could be something as simple as a bad gascap, but it COULD be something more serious. The only way is to have the car tested, but see if Autozone will test it for free before spending 100 bucks at a Lexus dealer.

[Amadeus74]

Thanks 98Camry LE . . . the AutoZone suggestion sounds like a good one. I'll do that.

If, however, the problem can't be dispelled as something minor, I agree with you that I probably need to just "bite the bullet" and take it to my local Lexus dealer.

Thanks again for your response.


Amadeus74

[Fern]

I had same problem shortly after buying car.

Took it to dealer, they reset light and cleaned the gas cap and housing...

It appears the first fillup I did, I was not careful enough to close the cap tightly...

Dealer did it for free and next time they caught me there they made up for it on a routine maintenance visit...

Cheers,


Fern

[Amadeus74]

Thanks for the insight and tip, Fern.


Amadeus74

[foompla]

why do people always think its a gimmick?

[K Lam]

ES300 1998. 110000Km With my luck you could have to replace the ERG valve at great cost