Debate regarding braking, regen, and brake light illumination.

[tls]

The behavior may be different in 2-pedal mode. If so, it will just approximate what a truck with a manual transmission would do when jake (engine) braking.

I will drive down the mountain after dark tomorrow (I am in the flatlands today) and find out.

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[hturnerfamily]

this is not correct unless i am misunderstanding what you are saying. Say i am on the highway at speed (one pedal driving) and i take my foot all the way off the accelerator, I can literally see my brake lights light up the instant my foot comes off. my tesla did this, every EV that has one pedal I believe does this. It would be so dangerous if they didn't.

correct, BUT, you are referring to ONE PEDAL mode, which ALWAYS applies the brakes, and REGEN, to bring the vehicle to a complete STOP. Of course, yes, the brake lights will illuminate.

I am referring to REGEN, only... it does not, and NEVER applies the brakes, no matter how fast, how slow, or even if you 'creep'.... ONLY you, the driver, will apply the physical brakes, in this mode, and only THEN will the brake lights illuminate.

TEST IT.

 

[hturnerfamily]

The behavior may be different in 2-pedal mode. If so, it will just approximate what a truck with a manual transmission would do when jake (engine) braking.

I will drive down the mountain after dark tomorrow (I am in the flatlands today) and find out.

good idea, as I've come 'down' many mountain ranges, such as west of Franklin NC, and north of Helen, GA, the Lookout Mt range in N Alabama, etc... the REGEN is a wonderful way to manage your speed, without brakes, and to have more of a 'controlled' descent... even with a camper in tow.

Try it in NORMAL mode, which will have a slight amount of REGEN,
then TOW mode, with a little more,
then with SPORT mode, for the most....

remember, too, that you are simply 'slowing', you are not applying the physical brakes, so there is no signal to any brake lights...

 

[LazyLightningATX]

good idea, as I've come 'down' many mountain ranges, such as west of Franklin NC, and north of Helen, GA, the Lookout Mt range in N Alabama, etc... the REGEN is a wonderful way to manage your speed, without brakes, and to have more of a 'controlled' descent... even with a camper in tow.
I am referring to REGEN, onlywhich will have a slight amount of REGEN,
then TOW mode, with a little more,
then with SPORT mode, for the most....

remember, too, that you are simply 'slowing', you are not applying the physical brakes, so there is no signal to any brake lights...

I am referring to REGEN, only

got it, so i was misunderstanding i have literally never turned one pedal off since i got the truck, so, this is not an issue for me.

but, ya, if you idle an ICE all the way through town at low speed and make slow turns, its brake lights will never come on either...kind of like what you described above.

i used to drive a manual golf-r and in traffic and i would see how long i could go without using the brakes!

 

[tls]

Just FWIW, not only Teslas but also many ICE cars will illuminate the brake lights at a decelleration threshold, whether the friction brakes are engaged or not. This all started decades ago with a recall of early BMW X-Drive vehicles which were getting rear-ended because the X-Drive cruise control could decellerate _hard_ using only engine compression, and not illuminate the brake lights...

 

[TaxmanHog]

the ONLY way brake lights illuminate is by PHYSICAL braking, not by Regen...never. TEST IT.

We've tested this before, and proved you wrong then , why perpetuate the farce?

 

[Joe.....Montana]

We've tested this before, and proved you wrong then , why perpetuate the farce?

You say potato I say patato....we can both hold onto our own realities....(heavy does of sarcasm).......

 

[Henry Ford]

"I reject your reality and substitute my own!"

- Adam Savage

 

[Henry Ford]

There should be a way to turn regen off then those who are confused by the system can have their basic brakes.

There's nothing to be confused about. The brake pedal always slows the vehicle down. Who cares why the brake pedal slows the vehicle down?

Letting off the accelerator pedal always* slows the vehicle down. The only difference between one pedal mode and two pedal mode is the rate at which the vehicle slows. Again, who cares why the vehicle slows down?

I don't need to know if my engine has six cylinders or eight to drive a car.

* Ignoring gravity

 

[TaxmanHog]

This thread contains posts originally found on the following thread

Truck accelerated from stop and rear ended car in front.

Please keep all posts regarding the braking functionality here while leaving the other thread for discussion about unintended acceleration while stopped in traffic.

 

[bmwhitetx]

I think when @hturnerfamily says REGEN Only, he means "Two-pedal mode".

If so, then all of you are in violent agreement. Like the ICE F-150, two-pedal mode does not turn on the brake lights unless the brake is pressed (or when Auto-Hold engages).

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