I got into my car yesterday and pulled it out of the garage and realized I forgot something in the house so I put it back in park in the drive way and ran back inside. When I got back into my car and put it in drive the car started singing and the traction control light, not the light when you turn off traction control, was flashing. I put in back in park and waited a couple of seconds then put it back in drive and the light went away and the dinging stopped. This was the first and only time I've ever seen that happen. Any one have an idea what that could be about?

Thanks

 

Sounds like you hit the brake hard when you got back in and activated the brake hold function(i.e. hill climb assist).

 

Maybe you were getting the 'Unable to Detect Key' notification, which I believe is the Master Warning Light...or a yellow explanation mark (!) inside of a triangle.

 

Er34 was right. I had never activated the hill start feature, let alone knew about it. I replicated it on my way home from world and it held the car for a couple of seconds before releasing. Thanks.

 

Good thing it wasn't anything major!

 

What year is this available? How do you activate it?

 

All 4GS should have it, just floor your brake pedal, hold for about a second, the car will make a beep and the TCS light will begin flashing. Release the brake, and the car will now hold for you(I think it's like maximum 5 seconds) until you apply the gas or the brake again. The point is to allow you to move your foot to the gas pedal when you're on steep hills so you don't roll back.

 

This is the 2022 GX460 Tutorial which I have found to be an excellent source of information. Starting at the 36:52 segment is a how to use cruise control. Should answer any questions.