RX - 1st Gen (1999-2003) Discussion topics related to the 1999 -2003 RX300 models

Check engine light on

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Old 06-07-06, 12:27 PM
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RNDRX
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Smile Check engine light on

We just returned from a long trip with our 99 RX and the check engine light is staying on. Anyone ever tackle one of these without the dealership. The trac Control light (its two wheel drive) came on also but went off and stayed off after the vehicle was shut of and re started. It runs fine with no problems at all but the check engine light is still on. Any way I can reset it??

Last edited by RNDRX; 06-07-06 at 12:28 PM. Reason: more info
Old 06-07-06, 02:30 PM
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kRonX
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DO NOT take it to the dealer, they charge a lot for diagnosing the check engine light. I had to pay over $100 couple weeks back for them to check it out and it turned out to be only a loose hose in the intake.

Lexmex said that if you head over to Autozone, they will help you get the codes for the check engine light for free. After, you can post up the codes here and we can help you find the problem.
Old 06-07-06, 02:56 PM
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Lexmex
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Would be interesting to see the code first, but since you asked.

There are three ways to reset it:

1) Go to Autozone or buy your own code reader, read the code, and then you can erase it.

Now for the cheaper methods (though Autozone will read it for free)

2) In the fuse box (driver side in the engine bay) look underneath the fuse box cover and it will show a diagram. Locate the the EFI fuse, it is a 20 amp yellow fuse. With the vehicle turned off and the key out of the ignition remove that fuse for about 10 second and then put it back in (there is a little tool attached to the cover to help). The light should go out but may come back on later if the error is still present. The vehicle might feel a little slow at first and then pick up speed. This is due to the fact that the vehicle has an adaptive system that learns your driving habits. It usually gets back to normal in a few minutes.

3) Remove the negative battery cable and put it back on. I recommend the EFI fuse method in this case since it is faster no presets lost.

If you get me the code, we can go over the issue.
Old 06-07-06, 04:23 PM
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salimshah
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Originally Posted by RNDRX
We just returned from a long trip with our 99 RX and the check engine light is staying on. Anyone ever tackle one of these without the dealership. The trac Control light (its two wheel drive) came on also but went off and stayed off after the vehicle was shut of and re started. It runs fine with no problems at all but the check engine light is still on. Any way I can reset it??
I must commed you for having such a positive attitude.
Every one else would have put a different face.


Salim
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