I was just flipping through the Dealer Ordering Guide while I await my GLS to be delivered. I noticed on one of the pages that Collision Prevention Assist Plus is now a standard feature on the GLS. I know that some of the cars have the thing where if the camera in the window thinks you aren't stopping, it beeps, but the description in the ordering guide says this also uses radar and will stop autonomously.

Is this the thing that goes in the star in the grille? In my build spec sheet, it does not mention this feature at all. I did not get Driving Assist, and did not hear of this until now. The whole driving assist/collision assist thing is confusing.

Any help would be appreciated.

Thanks.

That's the sensor for DISTRONIC.

Does that mean the car will have the 2 window cameras with the glossy star? Will the car stop on it's own if I don't? I have a hard time differentiating the different driving assist options.

There are a myriad of sensors & cameras on the front of our cars. The glossy star for the DISTRONIC I wanna say is a radar based system. On the front bumper are the sensors that look like they're for the park distance system but they're also for the collision prevention assist. Top of the windshield are 2 cameras, one of which at least is for the lane tracking.

The safety systems are either passive, gives a warning and standard or active and most of those are cost options. MB doesn't advertise their collision prevention assist as bringing the car to a complete stop to prevent an accident. However, I can tell you that it will apply the brakes.

I am trading in a GLE that has lane tracking and parking assist, but no driving assist. It beeps if it thinks you aren't stopping, but it won't stop itself. See the screenshots of the GLS dealer ordering guide below where it says that Collision Prevention Assist + uses radar, can stop, and comes standard. None of the cars I test drove had radars or anything visible (no glossy star) and the parking sensors are only used for parking. I'm trying to figure out where the radar is on the car and if it can stop on it's own. The drive assist options are confusing.

2016 CPA+ is "standard" short range sensor system - consider it a traffic alert system for possible forward collision - moving or stationary object - if no driver reaction - the "+" part it can implement emergency braking with up to 60% braking force to bring to full stop up to 45 mph.

Just trying to help - keep the beat !

So per the coment from Fabbrisd1, Collision Prevention Plus is standard and includes emergency braking. On the front bumper, the sensors you are seeing for the park distance control also play a part w/ the CPA+. On my GLE I do not have the parking assist, but I have those sensors and also CPA+. Before this, I had a 2012 ML that also did not have PDC, CPA was not standard back then, and I had no sensors at all on the bumper. I've had the CPA+ beep a few times, and it only beeped. There was one time though on the highway, a car in the lane on my right cut across 2 lanes into the lane on my left so close that he should've scraped my bumper. There was the beeping and flashing red light, but also in the split second I took my foot off the gas to hit the brakes, my seatbelt tightened sharply and the car slammed the brakes itself. Almost scarier was being almost at a complete stop on a 4 lane highway. So believe me, the system is there, your sensors are there, and it does work.

P.S.: A bit off topic, but it's the unseen behind the scenes type of safety systems such as this and Attention Assist that MB gives as standard equipment. It grinds my nerves when people complain about not having leather or HID/LED headlights as standard on a $60k+ vehicle w/o realizing all that you do get. Getting off the soapbox...

So the "radar" component utilizes the parking sensors? If you have no parking assist, the bumper still has the sensors? The car I drove had no parking assist and no sensors. There are 2 dummy sensor cutouts in the mesh part of the grill that I think are placeholders for real sensors, if you don't have the package. Or maybe those are actually real sensors for the CPA+.

Correct

What the dealer told me about my GLS was that the radar equipment is located in the enormous star on the front grille in addition to the windshield/rear-view mirror console. The bumper sensors are close proximity sensors.

The "Star" sensor is part of the Driver's Assistance/Distronic optional package.

CPA+ is "standard" for GLS that don't have/added Driver's Assistance package - if you select Driver's Assistance package - you have Distronic, and no CPA+

So if I have the Driver Assist Package I will only have Distronic+ and no Collision Protection Assistance?? Would my car stop itself in the event of an imminent collision then if I was not using Distronic (which is 99% of the time)?

There are several videos in the link below that cover this topic as well as several others:

http://techcenter.mercedes-benz.com/...us/detail.html

Does any one know where the control module is located, there seems to be differing information depending on where you look, I am getting a CPA + Inoperative message but no other immediate adverse affects (so far). The Parktronic still works so i don't believe its the sensors? I had been getting intermittent false alarms, warnings with no vehicles nearby?