ls400geek

I went to start the car this morning and found it out the battery was dead (my boyfriend said he had noticed a door ajar this morning and closed it, but evidently too late).

I did a 30 minute, 6A / 12V quick charge with my battery charger (plugs into 120V AC) -- left the battery connected to the car (as both my brother and boyfriend said it was okay to do so).

Disconnected the battery charger and the car started.

I drove to the grocery store, and on the way noticed "CHECK VSC" on the dash display. Also the "VSC OFF" light was on. I tried pressing the VSC button and nothing happens. Still says "CHECK VSC".

Any ideas what happened?

Thanks,

Jennifer

Yamae

Don't worry Jennifer. All you need to do is just wait about 20 seconds next time when you start the engine.
If that's not OK, try one more method written at below.
https://www.clublexus.com/forums/ls4...ttle-body.html

sha4000

iTrader: (1)

Yamae is right. Or you can just disconnect the negative battery cable for a couple minutes and then reconnect. That should turn the light off.

ls400geek

Thanks you guys. The battery disconnect and reconnect solved the problem!

Yamae

You are welcome. Thanks for the update post.

DnJ90

Have a similar situation.Can this happen the day after replacing the battery too?

Kansas

Maybe. Follow the reset procedure in your owners manual. But make sure that the battery cable clamps are bright and shiny and apply a thin coat of something like Vaseline to them to retard corrosion. Cable clamp / battery post cleaning tools are available at auto parts stores. I've avoided or delayed replacing batteries a few times simply by cleaning the battery terminals and cable clamps.

Yamae

It happens every time when the battery is reconnected. Was it the first time when you start the engine the day after the replacement?