Do brake lights illuminate during auto-regen?

[d00d]

When I get my car back from the shop I'm going to see if there's a Car Scanner tile that can show this.

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[simcity]

I can confirm that it does.

but only when regen is in auto mode and it’s decelerating at a significant rate (ie you are approaching a car in front that is going very slowly).

‘Normal’ regen mode will not cause the lights to come on. There is a threshold where they will come on if regen is causing it to slow down quickly.

similar behaviour in ACC mode.

Are you sure the car is not actually applying the mechanical brakes at this point in Innodrive / ACC - as it has the ability to do via the brake servo controls?

So not just regen

 

[bn8959]

this is in regen- auto mode, not ACC.

This will slow down to match the car in front but within a limit. It won’t slow down as fast as ACC will, you do need to brake manually in many situations. Therefore regen-auto mode won’t apply mechanical brakes - as-per its name, it’s regenerative only, but could slow down quick enough for brake lights to come on.
ACC will break heavily enough to use mechanical.

 

[ShiftyWolf]

Tape something reflective partially covering the center brake light and extending down the window to see in your rear view mirror. Turn on Auto recuperation, drive normally in mild traffic and see when the brake lights come on.

I haven't done it, but it seems simple enough to try. BTW, I very much like driving with Auto recup turned on, as I can coast when no one is near but still get very good regen and reasonable following distance from anyone close ahead. With recup off, I'd constantly be tapping the brakes (and 100% activating the brake lights) any time I wanted to reduce my speed just a bit.

YMMV

 

[simcity]

this is in regen- auto mode, not ACC.

This will slow down to match the car in front but within a limit. It won’t slow down as fast as ACC will, you do need to brake manually in many situations. Therefore regen-auto mode won’t apply mechanical brakes - as-per its name, it’s regenerative only, but could slow down quick enough for brake lights to come on.
ACC will break heavily enough to use mechanical.

You’re going to have to break this down for me as I’m utterly confused.

“This will slow down to match the car in front but within a limit”

What (system) exactly will slow down the car to match the car in front?

 

[bn8959]

You’re going to have to break this down for me as I’m utterly confused.

“This will slow down to match the car in front but within a limit”

What (system) exactly will slow down the car to match the car in front?

Hi

I’m not certain of this, but I have a feeling you may need ACC feature in your car for auto-regen, not 100% on that.

ACC will fully adapt your speed - it will accelerate up to your set speed, decelerate and brake when there is a car in front, it come to a complete stop and start moving again. It would even brake very very hard if needed.

Now, regen.
3 modes:

Regen off - car will coast
Regen on - gentle lift off deceleration to simulate and ICE engine braking
Regen auto - car will coast normally, but will adaptively change regen level if it sees a vehicle in front. It will gently begin to slow down via regen to naturally coast along matching the vehicle in front. However it will NOT aggressively brake. It will regen/decellerate faster than ‘regen on’ mode - imagine like being in an ICE and choosing different gears to engine brake with - that’s auto regen - it’s not going to stop you though.

 

[bn8959]

I’m not certain of this, but I have a feeling you may need ACC feature in your car for auto-regen, not 100% on that.

Thinking about this - I don’t know if auto regen uses the ACC radar (I suspect it does), or if it can get enough information from the front parking sensors to achieve this.
Maybe some with without ACC could confirm if they still have auto regen?

 

[bn8959]

Oh and just in case anyone hasn’t discovered auto regen, press and hold the regen button for 1-2 seconds to enable it. Note the regen icon on the dash, it will flip to having a letter ‘A’ beside it. Hold the button too long (or too short!) and it will toggle back off again.
Or change in your drive mode settings. I’ve enable it in my Individual setting mode by default.

 

[simcity]

Yeah sorry I’m not convinced this is anything other than the car blending in the mechanical brakes when it needs extra retardation. Whether you’re off the pedal doesn’t really matter. It will simply activate the motor in the brake master cylinder if needed.

…anyone got any hard data?

 

[d00d]

Everyone has the auto regen option, with or without ACC.

 

[Hirschaj]

Yeah sorry I’m not convinced this is anything other than the car blending in the mechanical brakes when it needs extra retardation. Whether you’re off the pedal doesn’t really matter. It will simply activate the motor in the brake master cylinder if needed.

…anyone got any hard data?

ACC uses recuperation and mechanical braking. You can hear the mechanical brakes engage at very slow speeds.

Auto-recuperation does not use any mechanical braking. You can test for yourself by engaging auto-recup and listening for the lack of mechanical braking noise at those same low speeds. Then fully confirm by letting your car run into the vehicle that has stopped in front of you. Obviously don’t do that, but that’s what will happen if you let it.

 

[WuffvonTrips]

Personally, as someone who doesn't want ACC and auto-recupe to disengage me from the process of controlling braking, I'm less fussed about how they do it than I am about knowing whether or not the car- without those systems and without autonomous emergency braking intervening- ever operates the brake lights without me touching the pedal.

 

[simcity]

Triggering of the brakes lights in most modern cars irrespective of electric or petrol / diesel drivetrain is deceleration dependent.

Porsche no different.

So let’s say no mechanical brake blending - purely decel. using regen only…

what precisely does Auto-recuperation do differently than normal recuperation? Pretend it’s an open road in front and no cars etc to get in the way.

 

[allroadusa]

Auto mode is really clever.
When on open road with no one in front, there is no regen, only coasting.
When in traffic, the car will brakes with regen according to the speed and distance of the car in front, leveraging ACC. I like it.

 

[simcity]

Auto mode is really clever.
When on open road with no one in front, there is no regen, only coasting.
When in traffic, the car will brakes with regen according to the speed and distance of the car in front, leveraging ACC. I like it.

Does it brake any harder in Auto-regen versus normal regen with cars in front? Purely regen though - no blending

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