Brake lights under Regen

[tonybridge]

Further to past discussions about brake lights coming on under Regen braking:
I was following a Skoda EV yesterday and I’m pretty sure that only his two outer brake lights were flashing off and on as he lifted his foot, then accelerated. Coming to a complete stop at traffic lights, all the lights came on, the two outers as before, plus the high centre light. I’m wondering if this is the same with the MG4?

 

[TerryN]

The brake lights come on when regen level gets to about 7%. They are either on or off (no flashing AFAIK). They stay on when in auto-hold so at night time I pull up the Parking Brake switch (not the dial) to make them go off. The car stays in D so you can just drive off again by pressing the accelerator.

 

[tonybridge]

Thanks TerryN - just to point out that my question was essentially ‘which lights come on, just outlyers or all three?’. I know the principle. Should have been clearer.

 

[TerryN]

I believe it's all 3

 

[Papagato]

Further to past discussions about brake lights coming on under Regen braking:
I was following a Skoda EV yesterday and I’m pretty sure that only his two outer brake lights were flashing off and on as he lifted his foot, then accelerated. Coming to a complete stop at traffic lights, all the lights came on, the two outers as before, plus the high centre light. I’m wondering if this is the same with the MG4?

From memory of a friend working on an old VW Golf, the central and lower lights were triggered on different switches.

The lower ones were activated by a switch under the brake pedal and the central by a switch on the brake master cylinder. I figured it had to be a safety feature.

I doubt that's how they work on an EV (maybe) but I wouldn't be surprised if they were on separate circuits still.

So most likely a fault, in my opinion, whatever the intended behaviour under regen.

 

[Cabansail]

A bit off topic, but historic military vehicles often have a "convoy" switch. Engaging that will dim most of the lights and disable brake lights. It was to make vehicles less visible at night.

Apparently it can also be used (probably not legally) when being tailgated. I have heard of the convoy switch being turned on and then the brakes being applied. It should be noted that on vehicles of that age the crumple zone is fitted to the other car. This technique can be used to test that feature.

 

[ReintjeWA]

In my younger years I had a car on which the fog light was only on one side of the car, but for some reason the other side came with an empty fitting that was still wired up. All you needed was a spare bulb and then you could use your fog lights to fend off tail gaiters. I don’t remember ever using it though, my foot was heavier too back then.

 

[Cabansail]

The person who told me about this was in a slow ex-military Land Rover in the UK. He had been tail-gated by a boy racer, and had tried to give him the hint. Eventually he did the Convoy Switch maneuver and the idiot buried himself into the back, with the hitch going through the radiator.
He got out and brushed some debris off the back of the Land Rover, told the fool that he had no damage and bid him farewell leaving him with his demolished car.

DO NOT TRY THIS AT HOME!