2004 lexus es330 Vsc, trac, and check engine lights all came on at same time

Asked by Feb 12, 2017 at 03:08 PM about the 2004 Lexus ES 330 Base

Question type: Maintenance & Repair

Already replaced gas cap that I purchased from dealer. If I'm
not mistaken they came on right after having the timing belt

2 Answers


Have to start by having the vehicle scanned for trouble codes. Then you would know what to look at.

Go to Pep Boys or Auto Zone and they will scan it for free. Sometimes the issue is the O-2 sensors...not to expensive if you do it yourself, but a real PITA to change out the rear one.

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