Regeneration brake light operation.

[RadfordJim]

To see when the brake lights operate under regeneration, I unclipped the high level brake light so I could watch it in the mirror whilst driving.
At Level 1 with gentle deceleration, it hardly comes on. Level 2 only when you suddenly decelerate and Level 3 more often as you would expect.
I also notice when I use the brake pedal to stop at traffic lights, the hill start/handbrake engages when I've stopped, so I can release the brake pedal, but the brake lights stay on, even though my foot is off the brake pedal. It goes off when I touch the accelerator to move on.

 

[MG Clive]

Thanks @RadfordJim, a useful experiment.

 

[Hybrid Ann]

Thank you for that. Most interesting to know for sure. I knew it did at times because I saw there reflection in the car behind.

 

[ozzz]

To see when the brake lights operate under regeneration, I unclipped the high level brake light so I could watch it in the mirror whilst driving.
At Level 1 with gentle deceleration, it hardly comes on. Level 2 only when you suddenly decelerate and Level 3 more often as you would expect.
I also notice when I use the brake pedal to stop at traffic lights, the hill start/handbrake engages when I've stopped, so I can release the brake pedal, but the brake lights stay on, even though my foot is off the brake pedal. It goes off when I touch the accelerator to move on.

That’s answered a question that’s bugging me awesome thanks looks like a nice dark beer .

 

[RadfordJim]

That’s answered a question that’s bugging me awesome thanks looks like a nice dark beer .

Yes, the beer is Tom Long, taken at Stroud Brewery. I visit frequently when staying with my Daughter

 

[ozzz]

Yes, the beer is Tom Long, taken at Stroud Brewery. I visit frequently when staying with my Daughter

Lovely,we brew beer in Australia we had a dark lager and at the moment ageing a stout it’s 6 months in the bourbon barrel so far.
My sons own Bass point brewery in Shellharbour NSW and retired me do deliveries lol .

 

[Aitch1]

To see when the brake lights operate under regeneration, I unclipped the high level brake light so I could watch it in the mirror whilst driving.
At Level 1 with gentle deceleration, it hardly comes on. Level 2 only when you suddenly decelerate and Level 3 more often as you would expect.
I also notice when I use the brake pedal to stop at traffic lights, the hill start/handbrake engages when I've stopped, so I can release the brake pedal, but the brake lights stay on, even though my foot is off the brake pedal. It goes off when I touch the accelerator to move on.

Thanks for that, I've wanted to know since I got the car.

 

[Anon70]

You might fnd this thread informative as well

Post in thread 'Does high regen turn the brake light on?'

Apr 28, 2024

Not sure if cars made for the UK market have to follow these regs but this might be the tech spec for when a brake light signal must be generated

Sourced from here

https://unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/R13hr2e.pdf

• Anon70

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[Aitch1]

You might fnd this thread informative as well

Post in thread 'Does high regen turn the brake light on?'

Apr 28, 2024

Not sure if cars made for the UK market have to follow these regs but this might be the tech spec for when a brake light signal must be generated

Sourced from here

https://unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/R13hr2e.pdf

• Anon70

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I wonder what that means with our 3 driving modes?

 

[decrep]

I wonder what that means with our 3 driving modes?

In the quoted thread, siteguru says this.

"Agreed. And 1.3 m/s² equates to roughly -7% regen in the MG4.

Therefore regen level 1 probably won't cause the brake lights to activate, but levels 2, 3 and Adaptive will."