EV regenerative breaking and no brake lights

EV regenerative breaking and no brake lights

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Discussion

catfood12

Original Poster:

1,419 posts

142 months

Thursday 14th October 2021
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carlove said:
I’ve been behind a Corsa-e and got caught out by the brake lights no coming on, so gave an even bigger gap and worked off the car in front of the Corsa brake lights, Regen does slow quite sharply.

I have driven a leaf and the brake lights did come on with regen braking(I saw the reflection) it would put me off using the excellent (I really liked one pedal driving) feature if no brake lights came on.
Thanks for all the responses chaps, it's my first time in this forum!

I've double checked again no brake lights when 70-50 on a dual carriageway.

It must be a feature of the Corse E. I'll mention it to my sister or just stay out of regen. It is worth a follow up with the dealer though.

The thing needs charging now, & I have a long trip away tomorrow, so back to the world of ICE for me for the time being. cool

minghis

1,570 posts

251 months

Friday 15th October 2021
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I just checked mine and can confirm the Merc EQA brake lights come on when off the throttle (slowing down) in D- & D-- which is good as D-- is better than the actual brakes in some cars I had back in the day!

CraigyMc

16,409 posts

236 months

Friday 15th October 2021
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minghis said:
I just checked mine and can confirm the Merc EQA brake lights come on when off the throttle (slowing down) in D- & D-- which is good as D-- is better than the actual brakes in some cars I had back in the day!
This comment made me wonder if there'll ever be part of the driving test where you have to recall how long it takes to regen from 70-0, as opposed to just the braking distance (o/t but 315ft? Not in my cars, mate. Even the reaction times are works of fiction).

dvs_dave

8,632 posts

225 months

Saturday 16th October 2021
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TheDrownedApe said:
stolen as i started to wonder about my ID.3. Although no idea what it feels like smile

^ This. Regulations state brake lights need to come on if the regen deceleration is above a certain amount. If not, they don’t need to. Corsa regen deceleration does not exceed this threshold, hence no brake lights.

Lily the Pink

5,783 posts

170 months

Thursday 25th November 2021
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MG5s are being recalled to fix an issue that under the highest level of regen braking the brake lights were not coming on.

jinba-ittai

1,246 posts

210 months

Wednesday 1st December 2021
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dvs_dave said:
^ This. Regulations state brake lights need to come on if the regen deceleration is above a certain amount. If not, they don’t need to. Corsa regen deceleration does not exceed this threshold, hence no brake lights.
yes - the level of deceleration is probably no different to what you get in a petrol car if you downshift to 2nd gear at 50mph

dhutch

14,388 posts

197 months

Wednesday 1st December 2021
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jinba-ittai said:
The level of deceleration is probably no different to what you get in a petrol car if you downshift to 2nd gear at 50mph
I was thinking basically that.

Certainly you can supprise people by down shifting hard!

TheDeuce

21,580 posts

66 months

Wednesday 1st December 2021
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dhutch said:
jinba-ittai said:
The level of deceleration is probably no different to what you get in a petrol car if you downshift to 2nd gear at 50mph
I was thinking basically that.

Certainly you can supprise people by down shifting hard!
In every car I have driven with regen, or simply cars with braking as part of their cruise control... they have all shown the brake lights if deceleration is roughly more than typical engine braking (normal engine braking.. not dropping cogs to make the tailgater behind soil themselves... smile )

Either Vauxhall have reached a new level of stness or there is something wrong with that Corsa if it's really not signalling anything other than very light braking.