Merged thread: Automatic Emergency Braking activating for no reason

[siteguru]

I mean, if a case like that went to court and there were witnesses to say there were no obvious reasons why the car jammed on, would the judge apportion blame to the braking vehicle?

It has already happened (not with an MG4 to my knowledge though). I saw it on a dashcam video where the car in front was doing 50 in lane 1 with the dashcam car following, when the front car suddenly slammed on the brakes (with nothing in front and for no apparent reason - the road was dual carriageway and there was nothing overtaking in lane 2) and caused the dashcam car to hit the back of it. The text overlay said it went to court and was treated as a "crash for cash" attempt. (Stupid speed to be attempting that at mind).

 

[securespark]

So your car could cause you an accident which your insurance company then blames you for?



But I guess if you plugged the car in (to diagnostics), it would own up to doing the braking and you would be off the hook?

 

[NLMGSAN]

So your car could cause you an accident which your insurance company then blames you for?



But I guess if you plugged the car in (to diagnostics), it would own up to doing the braking and you would be off the hook?

If the log is saved...

 

[brilig]

Happened to me too! At a very slow speed brakes banged to a stop for no reason!

 

[Rolfe]

I'm always wary of this "shouldn't slam on the brakes for no apparent reason" position. Some time in the 1980s I was driving my Fiesta when my eyesight suddenly faded to nothing. I literally couldn't see. As it happens I was driving on a straight road between two lines of traffic cones - roadworks. I was able to brake relatively slowly and come to a stop, no need to slam on the brakes. I sat for a few seconds and my eyesight cleared. I have no idea what the driver behind me thought. It's never happened again. I suspect a transient functional hypoglycaemia (I'm not diabetic).

If that can happen to a healthy 30-something, it can happen to anyone. Never mind heart attacks and so on. If the circumstances had been different I'd have had no option but to slam on the brakes and hope for the best. But then if anyone examined me later, they would have found nothing wrong.

A deliberate "crash for cash" scenario, if the circumstantial evidence is strong enough, is certainly an exception where the braking driver should be penalised. But there are a lot of possible reasons for a car having to stop suddenly which aren't appreciable to any onlooker.

 

[Steve 666]

I've never had the emergency brake trigger in my MG5, but it did it once in my previous car (Honda Jazz) - I was in slow traffic going round a roundabout close to a van and it suddenly applied full braking.

Ah I have also moved from a jazz to the 4 and exactly the same happened to me when the jazz was slipping into traffic on an island.
The 4 has only braked once and I was realy impressed as it was a dog making a bolt for the road snatched back by the owner on its lead but the car anticipated the fact and jabbed the brakes for a second.

 

[securespark]

We've had it several times when reversing. The car has jammed on so hard it feels like you've hit something.

 

[dondiezel]

In the Philippines it's common to see pedestrians crossing the streets anywhere. A pedestrian crossed and came to the center of the street where I was driving and even when he stopped at the center, he came close to me and my MG4 came to a sudden stop. He wasn't directly in front but near the driver's side. Scary.

 

[derek31a]

That's standard front anti-collision stuff, you can turn it off (every time you start the car...grrrr)!

 

[Rolfe]

In the Philippines it's common to see pedestrians crossing the streets anywhere. A pedestrian crossed and came to the center of the street where I was driving and even when he stopped at the center, he came close to me and my MG4 came to a sudden stop. He wasn't directly in front but near the driver's side. Scary.

It's meant to do that. Be a lot more scary if it didn't and squashed someone.

 

[webhiker]

I'm glad you did not kill the pedestrian ?

 

[YaR]

Lovely bit of emergency braking as I was turning across the opposite lane and into a Tesco car park today. Oncoming traffic was about 100m away, also turning into the car park and slowing down so as a driver I knew I had more than enough time to complete the manoeuvre. Emergency brake jams on just as I'm crossing the lane markings and the car refused to move for a good 10s causing an obstruction to traffic in both directions. This is not acceptable. No safety feature should put you in unsafe situations.

Since I got the software updates at the one year service the emergency braking is actually worse. Sometimes it even kicks in as I'm trying to park and slowly moving close to the stationary car in front.

 

[securespark]

It kicked in for us when reversing into a parking space in a car park adjacent to a road. It must have seen the passing traffic and braked.

That's happened a few times now and each time, the braking is so severe, it feels like we've hit something.

 

[AndyL61]

Set the AEB sensitivity to low. This setting stays set and only brakes if absolutely necessary. No phantom braking with sensitivity set to low. ?

 

[NLMGSAN]

I had sudden braking in the spring this year, but that had nothing to do with the emergency braking system. When disabled it still happened. Turned out it was ACC. It disappeared after an intermediate update.
But now it's back. Yesterday I was passing a large white truck on a the highway. ACC on 100 km/h. Nicely in the middle of the lane, no signals from LKA. When I almost reached the rear of the truck in the lane next to me, it slammed the brakes and reduced speed from 100km/h to 75 km/h. I pushed the throttle to stop it but when I released throttle again it again slammed the brakes.
This is happening more often lately. But never like this...

 

[Matt x power]

It kicked in for us when reversing into a parking space in a car park adjacent to a road. It must have seen the passing traffic and braked.

That's happened a few times now and each time, the braking is so severe, it feels like we've hit something.

Mine did this too, I set it to alert only

 

[NLMGSAN]

Mine did this too, I set it to alert only

Well... two weeks ago it saved me from hitting a biker that suddenly decided to cross my path by going in the wrong direction. I was concentrating on cars an bikes coming from the other side and I never saw him.

 

[Rufus2005]

I've always turned off lka and front collision assist but since my software got updated last week I have left it on. All good until today when it suddenly slammed the brakes on. Now I understand when people mention this issue, its not like I've had before when you can override it with the accelerator pedal, this literally locks the brakes dead. Luckily I was going quite slowly and nothing behind me. It's disabled from now on lol

 

[NLMGSAN]

I've always turned off lka and front collision assist but since my software got updated last week I have left it on. All good until today when it suddenly slammed the brakes on. Now I understand when people mention this issue, its not like I've had before when you can override it with the accelerator pedal, this literally locks the brakes dead. Luckily I was going quite slowly and nothing behind me. It's disabled from now on lol

You are on R59?

 

[Rufus2005]

You are on R59?

Yes sure am