Do brake lights come on when foot comes off accelerator ?

Do brake lights come on when foot comes off accelerator ?

Does anyone know if brake lights come on when foot comes off accelerator ? When cruising down the highway this weekend doing 65 mph, car in front of me slowed down quick, I responded by taking foot off accelerator but not needing to brake, but car behind me seems like they didnt see me slow down. This seems to happen a lot. I hope brake lights come on because I never need to touch brakes.

lov2krz | 31 March, 2013


StefanT | 31 March, 2013

When the car is regen, foot off the accelerator, the brake lights comes on. If you want to know at what point they come on, just turn the rear camera on while driving at night. It is pretty obvious.

stevenmaifert | 31 March, 2013

Touch the Tesla "T" at the top center of the touchscreen. You should see a working graphic of your car. That is to say, if you touch the brakes, you will see the brake lights on the graphic; turn on the headlights or turn signal, same thing. Now drive the car and raise you foot from the accelerator. You should see when the brake lights come on, on the graphic. Neat!

ir | 31 March, 2013

The brake lights come on automatically when you lift your foot from the accelerator based on deceleration sensors. I don't know the threshold.

CarlE_P439 | 2 April, 2013

Great question! I was wondering about this (thanks for the answers)!

DickB | 2 April, 2013

Once you feel your body going forward, the brake lights will be on. Letting off the throttle lightly will not cause the brake light to be on.

GLO | 2 April, 2013


olanmills | 2 April, 2013

It is based on the amount of deceleration, not any specific speed or specific amount of lifting off the brakes. It works well imo.

Theresa | 2 April, 2013

It does NOT always come on. At high speeds (above at least 45 mph and probably closer to 55 mph) they don't come on right away. This is unlike my Roadster which always came on with my foot fully off the accelerator. To me it appears to be a function of relative speed to de-acceleration rate.