[MZWIE]

I have this enabled using the "early" setting. According to the manual a warning and possible auto-braking may be initiated in the event of a detection.

The issue is that no audible warning, haptic feedbacj or actual brake application is happening. All I get is the RED CAR symbol. This is not worth much unless you happen to be looking down at the instrument cluster.

Perhaps I do not understand how it's supposed to work.

[M2 CSL]

Originally Posted by e34m5

I have this enabled using the "early" setting. According to the manual a warning and possible auto-braking may be initiated in the event of a detection.

The issue is that no audible warning, haptic feedbacj or actual brake application is happening. All I get is the RED CAR symbol. This is not worth much unless you happen to be looking down at the instrument cluster.

Perhaps I do not understand how it's supposed to work.

You're not cutting it close enough then. It will auto-brake...

[M3 Adjuster]

Originally Posted by e34m5

I have this enabled using the "early" setting. According to the manual a warning and possible auto-braking may be initiated in the event of a detection.

The issue is that no audible warning, haptic feedbacj or actual brake application is happening. All I get is the RED CAR symbol. This is not worth much unless you happen to be looking down at the instrument cluster.

Perhaps I do not understand how it's supposed to work.

Other owners have had their car brake when in the early setting. Some have complained it occurred in a parking garage or narrow street with an oncoming car.

Personally I would recommend you switch to medium or late. But whatever setting you have it on.. it will work and it can and will hit the brakes if warranted.

I'm not sure any of these systems are 100 percent reliable ..

[Ian ///M]

I wouldn't want to find out if it worked or not lol

[gmzanatta]

I have mine set on late, early and medium are too sensitive for narrow streets around my town.

The system does work though - the red car is a warning that it is triggered but not active. If it has to auto-brake, it will beep, scream, shout and shake, and trust me, you'll know it's doing it.

[zenmaster]

You can prob test it in a parking lot with trash bags filled with something like paper or packing peanuts.

[Ian ///M]

Originally Posted by gmzanatta

I have mine set on late, early and medium are too sensitive for narrow streets around my town.

The system does work though - the red car is a warning that it is triggered but not active. If it has to auto-brake, it will beep, scream, shout and shake, and trust me, you'll know it's doing it.

Can you explain this in depth? I have mine set to early with no issues but I have seen it twice in this thread . Does it pick up the parked cars as frontal collision threats? Is it moreso annoying or dangerous as well (for people behind u or getting hit from the rear end)

I have only seen the red flash twice and one was at a stop light transitioning to a green so I rolled up on a accelerating car and saw it

[gmzanatta]

Originally Posted by Ian ///M

Can you explain this in depth? I have mine set to early with no issues but I have seen it twice in this thread . Does it pick up the parked cars as frontal collision threats? Is it moreso annoying or dangerous as well (for people behind u or getting hit from the rear end)

I have only seen the red flash twice and one was at a stop light transitioning to a green so I rolled up on a accelerating car and saw it

Ya something like that. Basically if a car is moving towards me in a very narrow street, it triggers it. On wider roads, no problem.

I think it's just misreading the incoming car as a wide car in front of me, so as we approach with what the sensor deems a high speed (remember, add the two speeds when traveling in opposite directions) it triggers the system.

Set to late I've had no issues at all.

[Dabozo]

Originally Posted by Ian ///M

I have only seen the red flash twice and one was at a stop light transitioning to a green so I rolled up on a accelerating car and saw it

Geez...i need to slow down i guess. Mine is set to "late" and its illuminating constantly!

[DETRoadster]

Originally Posted by Dabozo

Geez...i need to slow down i guess. Mine is set to "late" and its illuminating constantly!

Ha ha ha! Same here. It's near impossible to navigate stop and go traffic on the freeway without it constantly going off. If I left enough room between me and the car in front to not have that light come on, I'd have so many people cutting in front that I'd never get home.

Mine was set to early from the start and it auto braked on me once. That was all it took for me to switch it over to late.

[metrickid]

Originally Posted by Dabozo

Geez...i need to slow down i guess. Mine is set to "late" and its illuminating constantly!

You need to keep your distance at least...

[Dabozo]

Originally Posted by metrickid

You need to keep your distance at least...

I do! I'm not one of those jackasses that tailgates everyone. But I do like to drive fast when it is safe and I think the car is calculating my rate of speed and distance to the car in front (vs simply calculating just the distance to the car in front of you )and that triggers The alert. Even though I have it set to late I do feel it comes on too early sometimes so I think that has something to do with your speed and a safe braking distance? Some sort of formula.

[D CHOI]

Originally Posted by Ian ///M

I wouldn't want to find out if it worked or not lol

You can try testing it with those big bouncy balls lol

[D CHOI]

Found some explanatory videos on YouTube.

[DETRoadster]

Originally Posted by Dabozo

I do! I'm not one of those jackasses that tailgates everyone. But I do like to drive fast when it is safe and I think the car is calculating my rate of speed and distance to the car in front (vs simply calculating just the distance to the car in front of you )and that triggers The alert. Even though I have it set to late I do feel it comes on too early sometimes so I think that has something to do with your speed and a safe braking distance? Some sort of formula.

It absolutely calculates closing speed. I played around with it on a commute home a while back and noticed that I could follow the car in front of me more closely if I was matching their speed than I could if I was accelerating. Ignore these measurements, they are illustrative only: What I mean is that I pace the car in front of me with 20 feet between us and no lights, where as I'd get the lights and the warning with 30 feet between us if I was accelerating. I suspect the system also recognizes brake lights because I'm pretty sure I've witnessed it lighting up and alerting me when the driver in front brakes. it's actually a really smart system. I'm impressed by it.

[zenmaster]

Originally Posted by DETRoadster

I suspect the system also recognizes brake lights because I'm pretty sure I've witnessed it lighting up and alerting me when the driver in front brakes.

I doubt it knows the difference between them braking and you accelerating and why should it? Should be a simple matter of determining the closing distance.

[DETRoadster]

Originally Posted by zenmaster

I doubt it knows the difference between them braking and you accelerating and why should it? Should be a simple matter of determining the closing distance.

Conceptually, I agree with you. However, it seems that a car with brake lights on in front of me will trigger the system where as a car in front at the same distance without brake lights will not. It could be that the system is perceiving the deceleration of the car in front better than I can and is reacting to that where I'm reacting to the brake lights. Whatever the case, the technology is pretty cool. I'd love to see the code behind it!

[Artemis]

Spiral down narrow parking floors after taking delivery of the car: the sensor fears that you're gonna crash into the curb of the parking wall: beep-beedee-beep + brakes automatically slammed + swear words go through your mind.

Get onto the highway from a highway entry, accelerate to get up to speed of the flow and cross lanes behind cars, heading towards the first lane: beep-beedee-beep + brakes automatically slammed + swear words go through your mind + a few faces inside cars nearby likely thinking "erratically throwing out the anchor: you mad, bro' ?".

Been there, done that + changed the default setting "Early" to "Late". Nannies are less intrusive now.

[Dabozo]

Originally Posted by Artemis

Spiral down narrow parking floors after taking delivery of the car: the sensor fears that you're gonna crash into the curb of the parking wall: beep-beedee-beep + brakes automatically slammed + swear words go through your mind.

Get onto the highway from a highway entry, accelerate to get up to speed of the flow and cross lanes behind cars, heading towards the first lane: beep-beedee-beep + brakes automatically slammed + swear words go through your mind + a few faces inside cars nearby likely thinking "erratically throwing out the anchor: you mad, bro' ?".

Been there, done that + changed the default setting "Early" to "Late". Nannies are less intrusive now.

Your cross traffic example is quite familiar to me.
It's a great system for sure but yes, definitely needs to be set to 'late'.
Set to 'early' if you just pulled an all-nighter perhaps...and I don't mean binging!

[DETRoadster]

OK, I can also report that 100% without a doubt, frontal collision avoidance braking and warning are disabled at low speeds. I tested this by getting a little over zealous pulling into the garage and hit my toolbox. Dont worry, no tools or M cars were hurt in the test...

[Caduceus]

Interesting. My Volvo is the opposite. "City safe" auto braking is designed to avoid low speed nose to tail collisions such as when queuing for an intersection and you are watching the cross traffic. The guy in front goes then changes his mind. This system is deactivated at higher speeds.

I've tested it by mistake by trying to sneak into my garage while the door is still going up. Camera still sees the door while the nose tries the sneak in underneath. The car objects to this and a violent automatic stop results.

[M3 Adjuster]

Originally Posted by Caduceus

Interesting. My Volvo is the opposite. "City safe" auto braking is designed to avoid low speed nose to tail collisions such as when queuing for an intersection and you are watching the cross traffic. The guy in front goes then changes his mind. This system is deactivated at higher speeds.

I've tested it by mistake by trying to sneak into my garage while the door is still going up. Camera still sees the door while the nose tries the sneak in underneath. The car objects to this and a violent automatic stop results.

I pull into my garage all the time like this. Lol.

Very happy I don't have this nanny... clearly it seems to be a mandate in the us. Every manufacturer is advertising it like it's brand new tech that is exclusive to their vehicle!