Check engine light on

2012 LEXUS ES 350
30,000 MILES • V6 • 2WD
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NELSON D
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  • 1 POST
Temperature gauge not working. Stays on 0. Trac off light on.
Jan 24, 2020 at 5:06 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

The idea that the check engine light is on indicates there are diagnostic trouble codes stored in the vehicle's computer. These codes can identify or at least guide you to the issue. What I suggest is to have the computer scanned to identify codes. Here is a quick video showing how it is done:

https://youtu.be/YV3TRZwer8k

I realize most people don't own a scanner, but often times, a parts store will scan it free of charge. Do this and let me know what codes are found.

Take care,
Joe
Jan 24, 2020 at 9:48 PM