Sudden automatic braking issue (merged, MG4)

markglawrence said:

New to this forum.
Has anybody else experienced this?
Driving on a quiet road, nothing in front and a few cars behind is.
The car suddenly brought us to a sudden stop for no reason that I could think of.

Click to expand...

Hello, Mark. Despite, your bad experience.



To the forum.

When I first bought my used SE LR, last October, I had 4 instances of OMG Braking in as many weeks, twice with my dog in the back(in his crate)he was not happy. Since then I've been turning the Front collision warning off every trip, although just recently I've gone with just changing the alert level to low, which has worked so far. But once it's happened a few times, it puts you on edge, and I'm still constantly expecting another episode.

In my humble opinion I think it's a problem with calibration, some people don't seem to have a problem with it and yet for others it happens more often.

I don't know if any of the latest updates have improved matters at all, I'm still on an early instance of the software, R13, and don't really want to upgrade it, as I'm happy with it as it is, with no other real problems.

Les burrows said:

Well here’s my opinion not in any vehicle should anything that might affect the actions of that vehicle on the road default to On.

You are the driver and you should decide what is right or wrong for your journey, when a vehicle brakes suddenly and unexpectedly that might, cause an accident in some circumstances.
Or the steering on the vehicle decides it is going to turn the vehicle left or right and might run you into an oncoming vehicle or a lamp post, it will be you the driver that will be standing in the dock or by the grave side, not the software that might have cause it and not the person who designed it.
Not the NCAP people who demanded it. To some box.
No it’s you.
The driver should have total control of the vehicle they are driving at all times from the start to the Finish of there journey and it is the driver only that is responsible for the action of the vehicle they are driving.

DEFAULTS don’t count.
Les

Click to expand...

Well said Les.
I've just joined the forum prompted by an AEB incident in my brand new MG4.
I'd been struggling with the Lane assist function which misinterprets smaller roads and is frequently trying to turn the wheel. Very dangerous.
My wife was driving when the emergency brake was slammed on. Nothing in front of us at all. She was very shaken. In shock, in fact.
Assuming the garage will return it finding no fault, I don't see her getting into the car again!
Going to be an interesting conversation with the dealership.

When I first had my Trophy emergency braking occured twice as I was turning right with a car in the other lane. I switched Front Collision protection sensitivity to medium and now only get alerts in the chicane roads in my area. I've also switched off braking on the Rear Cross Traffic protection as it slammed on the brakes as I reversed out of my drive. (I need to drive in forward for charging.)

Well said Les and others. I agree and here is why.

1. The position in law is exactly as described.

2. The car's behaviour is as described. Others are similar. Tesla has the 'best' software and the worst safety record.

3. Too many organisations are 'chasing the money' regardless of safety.

Govt and NCAP, in particular, are you listening? NCAP is actually promoting unsafe cars when it should be warning users of bad behaviour! How do I know? It's on public record for all to see - eg. US National Highway Traffic Safety Administration - just ask Google.

4. I speak from experience: two years and 11,000 miles into MG4 ownership with extensive use of the latest software. I well understand it's behaviour; what it can and can't do and I'm able to use it reasonably safely for most day-to-day driving and motorways. Most of my driving is alone; feet off the pedals using just hand controls for driving and voice for everything else.

5. Be aware that the PRO ASSIST software learning process is slow, long, tedious and occasionally surprising. Bluntly, it's dangerous and unfit for public use. I don't use it with passengers because it's too crude and frightens them but I can control my car sufficiently well to not frighten other road users.

6. Knowing what I do, would I get/recommend one of these cars for my wife or son? - definitely NO.

7. Will I continue with feet-off software-assisted driving? NO - I did it out of professional curiosity and I don't trust it. It's too crude and unsafe.

5. Credentials: Driving experience: 950,000 miles over 67 years
Technical: Aerospace, control systems, telemetry, telecontrol, human behaviour.

I would go along with all of you. But our voice is not heard. We are too much scatered around the world to make them listen. Even if it hits the press (UK article about MG4), they promise a lot, do nothing and nobody really makes them clear they have work to do. On top of that, we should not forget that many others simply disagree with us. They are fine with these systems, or with disabling these system again and again.
I'm an EU citizen. So the EU directives are leading, also the one about what we call LKA systems. So I asked Brussel to confirm the interpretation of the directive that describes the systems LDWS and CFCK. The first one is the warning system when crossing lane markers, the second is when it intervenes with your steering. Together, in the directive the two are named ELK systems.

They acknowledged based on this directive that these two systems should not be triggered when crossing dashed markers.
However, they come up with a statement that LKA systems are a different system that are allowed to react to dashed markings.

Thing is: LKA systems are the same as ELK systems in the way this directive describes them. And it is this very directive that states we will always have them activated at startup.

Asking what the difference is between both, and where the directive about LKA systems can be found leads to no response...... We are talking to a concrete wall. People must first die before they act.

I've had that happen 2 or 3 times so now I always switch it to "Alert Only".

TerryN said:

I've had that happen 2 or 3 times so now I always switch it to "Alert Only".

Click to expand...

Does it stop on alert only?

I totally agree with your thoughts.
Especially in the UK and the state of the road system with regards to the Potholes and other issues with the roads. It can be terrifying to be driving down the road and you know that one is ahead and you manoeuvre to avoid it and the Damn system tries to put you into the obstruction.
The first time I forgot to disable the lane assist was nearly my Last one. I completely Hate the Damn thing.
I've managed to drive since 1980 in the UK and I've only had one accident and it was someone who drove into the back of me at traffic lights.
I don't believe that the car knows more than the DRIVER...

Had it happen twice, once with me driving, and once with my wife driving. Car received a number of updates at the service, and not had it occur since.

salty said:

Does it stop on alert only?

Click to expand...

Surely the whole point of 'alert only' is that it just warns you, rather than stopping

If you turn on "Towing Mode" the following is disabled:

Random Emergency Braking
Lane Keep Assassination

You do not need to turn this back on every time you jump into the car although sometimes it will remind you and you might just need to hit the CANCEL button rather than going to SETTINGS

BTW ... The car won't beep at you at all for anything, even if you are going to reverse into something

I thought maybe he meant does the setting get saved, which I'm not sure

David9448 said:

I thought maybe he meant does the setting get saved, which I'm not sure

Click to expand...

Yep, that's what I meant.

I'm sure the answer is No ... AEB always reverts to an active state.

hawleybeach said:

If you turn on "Towing Mode" the following is disabled:

Random Emergency Braking
Lane Keep Assassination

You do not need to turn this back on every time you jump into the car although sometimes it will remind you and you might just need to hit the CANCEL button rather than going to SETTINGS

BTW ... The car won't beep at you at all for anything, even if you are going to reverse into something

Click to expand...

I did not pay for a car with systems I need to disable because they do not work.

meveringham said:

I don't understand why everyone is so nonchalant about this! It just happened to me (I'll remove my post, didn't see this one before!) and it's potentially incredibly dangerous. If it had happened at any higher speed than it just did for me, and there was a vehicle following behind, the chances are that they would have driven right into the back of me.

I've disabled the function now (also ludicrous that you need to do so each time, it should remember the setting) but that is wholly unacceptable IMO.

Click to expand...

Make sure your camera are clean

I've only had it twice. First time was justified and I'm glad it did stop me, second time I was simply turning right with a stationary truck on the side of the road, must have detected I was moving too quickly towards the back of it and slammed on the anchors.

Other than that mines been fine.

I take the point that the driver is always in full control of the vehicle but please....make it QUICK and EASY to turn off these Big Brother systems.

NLMGSAN said:

I did not pay for a car with systems I need to disable because they do not work.

Click to expand...

Yes you did!!!!!