My IS wouldn't start today, I believe it may have been because I left the dome light on overnight.

I jumpstarted it with my other car and now the TRAC OFF light is on (won't turn back off) as well as the check engine light. After driving it around, I parked it turned it off and started it again. The lights are still there. Any ideas? The battery is original at four years 76k kms (~47k miles) on it and I was planning to replace it in the fall as a preventative measure. The car has only one incident of not starting with the previous owner when it sat undriven for two weeks one winter when it was new. It's a 2014 IS 350 AWD F Sport that does not have BSM so I don't think it's the gateway ECU.

I didn't have a chance to check the voltage thinking maybe the car doesn't like low voltage, nor have I hooked an OBD reader to see what the code is. I have the battery disconnected for now hoping it will reset.

Has anyone run into this before? I'm getting a new battery tomorrow regardless.

 

So after I make the above post and google more, I find this..... (d'oh)

https://www.clublexus.com/forums/is-...f-annoyed.html

 

I just reconnected my battery and started the car.

The TRAC OFF and CEL lights are gone.

What a relief!!

 

I have one of those OBII Adapters to clear stuff like this.

 

Trac off sounds more like a blessing than a curse loll. Even when it's "off," it's never truly off. But I turn mine "off" everytime I drive