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 Post subject: Driver inititated regenerative braking without brake pedal
PostPosted: Fri Nov 04, 2016 1:39 pm 
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Joined: Thu Oct 27, 2016 4:25 pm
Posts: 50
Typically, when letting of the gas pedal the car will regen brake enough to more or less maintain the current speed. That's fine when needed. But what if you want to slow down instead?

I found when in Drive (not Sport) mode that if I pull the Shift-Down paddle once on the left side of the steering wheel instead of using the brake pedal that the car enters an aggressive regenerative braking mode. The display shows "Mx" for the gear it hits, will shift down itself as you slow down, and will then return itself to Drive either when you stop or nearly stop. Or, if you speed up enough to call for the next gear it will also return to "Drive" mode. If you don't need the next higher gear and just back off for the next slowdown, then the regen braking mode persists. Brilliant!

This seemed to give the battery noticeable new life during a congested 5-30 MPH crawl when otherwise reading 0 miles remaining. Clicking the shift-down paddle once also works well to minimize using the friction brakes when exiting a turnpike/motorway/highway/freeway/toll-road.


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 Post subject: Re: Driver inititated regenerative braking without brake ped
PostPosted: Fri Nov 04, 2016 5:05 pm 
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Joined: Tue Sep 22, 2015 4:39 pm
Posts: 175
jumper wrote:
Typically, when letting of the gas pedal the car will regen brake enough to more or less maintain the current speed. That's fine when needed. But what if you want to slow down instead?

I found when in Drive (not Sport) mode that if I pull the Shift-Down paddle once on the left side of the steering wheel instead of using the brake pedal that the car enters an aggressive regenerative braking mode. The display shows "Mx" for the gear it hits, will shift down itself as you slow down, and will then return itself to Drive either when you stop or nearly stop. Or, if you speed up enough to call for the next gear it will also return to "Drive" mode. If you don't need the next higher gear and just back off for the next slowdown, then the regen braking mode persists. Brilliant!

This seemed to give the battery noticeable new life during a congested 5-30 MPH crawl when otherwise reading 0 miles remaining. Clicking the shift-down paddle once also works well to minimize using the friction brakes when exiting a turnpike/motorway/highway/freeway/toll-road.


If you put the shifter on Manual mode (in EV mode) without doing anything else, you can pretty much drive one pedal driving like an electric car. The e-tron automatically upshifts or downshifts.


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 Post subject: Re: Driver inititated regenerative braking without brake ped
PostPosted: Fri Nov 18, 2016 7:52 am 
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Joined: Tue Nov 15, 2016 1:45 pm
Posts: 13
Hey Jumper, you should know that when in drive, removing your foot from the accelerator does not engage the recuperative breaking in favor of plain coasting (which is more efficient than trying to regenerate potential energy from the kinetic energy), unless you happen to start coasting down a hill.

The car will always engage the recuperative braking before the brake pads when the decelerator is pressed, and only engages the brakes when pressing the pedal firmly or at very low speeds (stopping).


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 Post subject: Re: Driver inititated regenerative braking without brake ped
PostPosted: Fri Nov 18, 2016 6:45 pm 
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Joined: Tue Sep 22, 2015 4:39 pm
Posts: 175
revaric wrote:
Hey Jumper, you should know that when in drive, removing your foot from the accelerator does not engage the recuperative breaking in favor of plain coasting (which is more efficient than trying to regenerate potential energy from the kinetic energy), unless you happen to start coasting down a hill...


Unless you have it in manual mode, then it will engage recuperative breaking.


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 Post subject: Re: Driver inititated regenerative braking without brake ped
PostPosted: Sun Nov 20, 2016 11:18 am 
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Joined: Thu Oct 27, 2016 4:25 pm
Posts: 50
I've noticed, even in drive that if the car begins accelerating while coasting down a hill, the regen braking seems to engage to more or less maintain the speed at which I've lifted from the accelerator pedal.


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 Post subject: Re: Driver inititated regenerative braking without brake ped
PostPosted: Sun Nov 20, 2016 2:27 pm 
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Joined: Mon Nov 14, 2016 7:03 pm
Posts: 22
by default, the car will coast in "neutral" - better gas milege

you can force re-gen (good for red lights) by engaging the transmission either by selecting S mode (via shift knob) or dynamic mode (via audi select) or manually put it in gear with the pedal shifter


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 Post subject: Re: Driver inititated regenerative braking without brake ped
PostPosted: Wed Nov 23, 2016 7:15 am 
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Joined: Wed Sep 14, 2016 7:17 pm
Posts: 37
Location: Gatineau, Qc, Canada
Does anyone knows if the brake lights turn on when regen braking without pressing the brake pedal?

_________________
PLs

'17 e-tron Technik Tango Red
'09 Jeta TDI (pending VW Canada offer)


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 Post subject: Re: Driver inititated regenerative braking without brake ped
PostPosted: Wed Nov 23, 2016 8:28 am 
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Joined: Thu Aug 25, 2016 4:42 pm
Posts: 185
Yes, I've watched the red reflection on vehicles behind me when in regen-mode, the brake lights do come on.

_________________
- Arne
'16 e-tron Premium w/Nav, Scuba Blue, R8-style wheels
'84 911 Carrera Coupe


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 Post subject: Re: Driver inititated regenerative braking without brake ped
PostPosted: Wed Nov 23, 2016 9:41 am 
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Joined: Mon Dec 07, 2015 8:47 am
Posts: 69
Location: Reading/Basingstoke UK
The brake lights do not come on with regen braking in the UK spec e-tron. This may be a USA legal requirement but is not a UK legal requirement.


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 Post subject: Re: Driver inititated regenerative braking without brake ped
PostPosted: Wed Nov 23, 2016 1:25 pm 
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Joined: Tue Sep 22, 2015 4:39 pm
Posts: 175
PLs wrote:
Does anyone knows if the brake lights turn on when regen braking without pressing the brake pedal?

Yes. I wonder if the car behind me is puzzled why I keep pressing the break pedal.


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