Golions1781

I just leased my first Mercedes, an E300 4Matic with Premium 1. I have spent the last week playing with the features and I have come across a possible issue with my Active Brake Assist. When I try to turn the functionality on (to any of the three options: early, medium, or late), within a second or so the car changes the setting back to OFF. Has anyone else experienced this issue?

c4004matic

Are you sure that particular feature is available as a p1 feature in your area? In the US its only available in the p3. The non p3 cars have low speed auto brake but not active brake assit.

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Golions1781

Are you sure its only on the cars equipped with P3? Active Brake Assist is listed on my window sticker as a standard feature. Its listed as code 258. The item is available in my COMAND system but when I change it, it immediately changes it back.

c4004matic

Absolutely certain. Just checked on MBUSA. Active brake assist is part of the "intelligent" drive system which is part of the P3 package. That's why it defaults to "off" in your vehicle. Aside from slow speed autonomous braking all the "active" safety systems are p3.

Golions1781

Thanks for your help.

Golions1781

Looking at the site, I think that the feature my car has is BAS (Brake Assist) but not Active Brake Assist. It is just weird that I can see the ABA in my COMAND system, the feature is not greyed out, and I can go in and change the setting only to have my car change it back to off. If you look at the window sticker (here is an example from this site, little bit difficult to see: https://mbworld.org/forums/e-class-w...wrooms-us.html) you can see that it lists Active Brake Assist under the standard features.

c4004matic

MB tends to use terms weirdly in their "build" list. My guess is they have a limited number of preloaded terms that they use for multiple features. Regardless, you are correct, the p1 and all other E class cars include brake assist. In addition the option packages vary by model, while the p3 for the E 300 is 11K on the E 43 its 7k since the e43 includes more features baked in than standard model. That is one of the complaints some reviewers have had, though praised that finally basic autobrake is finally included on all versions, the advanced goodies are all lumped together in the most expensive option package.

ua549

Active Brake Assist is listed as a standard feature for the MY17 E Class on mbusa.com. The part that is optional is Active Brake Assist with Cross-Traffic Function.

Golions1781

You have been a wealth of knowledge and I definitely appreciate you sharing it with me.
The way Mercedes packages things has been my only real complaint of my leasing experience/first week of ownership. To think that keyless entry (aka being able to lock/unlock doors while the key is buried in my wife's purse) is not standard on a $55,000+ Mercedes and can only be obtained as part of a $3100 option package that also includes autonomous parking seems very odd to me. Now this situation where they utilize the exact same terminology to describe BAS and Active Brake Assist for the purposes of the window sticker only adds to my MB "package" frustrations.
All that said, the car itself is wonder and while I was a skeptic, the 2.0 turbo churns out plenty of power for the driving that I do.

c4004matic

YOu are correct! Basic autostop is naw included in the "active" moniker.

From the manual:

Setting Active Brake Assist






Multimedia system:




, 􀀹􀁈􀁋􀁌􀁆􀁏􀁈 . k􀀤􀁖􀁖􀁌􀁖􀁗􀁄􀁑􀁆􀁈 . 􀀤􀁆􀁗􀁌􀁙􀁈






􀀥􀁕􀁄􀁎􀁈 􀀤􀁖􀁖􀁌􀁖􀁗




Vehicles without Driving Assistance Package:






The settings can be made after starting the


vehicle.




Vehicles with Driving Assistance Package:






The settings can be made when the ignition is


switched on.




% It is recommended that you always leave






Active Brake Assist switched on.


The moment of warning or intervention can be


adjusted as follows:




# Select 􀀤􀁆􀁗􀁌􀁙􀁈 􀀥􀁕􀁄􀁎􀁈 􀀤􀁖􀁖􀁌􀁖􀁗 􀀺􀁄􀁕􀁑􀁌􀁑􀁊􀀒􀀥􀁕􀁄􀁎􀁈


􀀤􀁓􀁓􀁏􀁌􀁆􀁄􀁗􀁌􀁒􀁑􀀝 􀀨􀁄􀁕􀁏􀁜: your selection is retained






when the vehicle is next started.




# Select 􀀤􀁆􀁗􀁌􀁙􀁈 􀀥􀁕􀁄􀁎􀁈 􀀤􀁖􀁖􀁌􀁖􀁗 􀀺􀁄􀁕􀁑􀁌􀁑􀁊􀀒􀀥􀁕􀁄􀁎􀁈


􀀤􀁓􀁓􀁏􀁌􀁆􀁄􀁗􀁌􀁒􀁑􀀝 􀀰􀁈􀁇􀁌􀁘􀁐: your selection is






retained when the vehicle is next started.




# Select 􀀤􀁆􀁗􀁌􀁙􀁈 􀀥􀁕􀁄􀁎􀁈 􀀤􀁖􀁖􀁌􀁖􀁗 􀀺􀁄􀁕􀁑􀁌􀁑􀁊􀀒􀀥􀁕􀁄􀁎􀁈


􀀤􀁓􀁓􀁏􀁌􀁆􀁄􀁗􀁌􀁒􀁑􀀝 􀀯􀁄􀁗􀁈: your selection is retained






when the vehicle is next started.




# Select 􀀤􀁆􀁗􀁌􀁙􀁈 􀀥􀁕􀁄􀁎􀁈 􀀤􀁖􀁖􀁌􀁖􀁗 􀀺􀁄􀁕􀁑􀁌􀁑􀁊􀀒􀀥􀁕􀁄􀁎􀁈


􀀤􀁓􀁓􀁏􀁌􀁆􀁄􀁗􀁌􀁒􀁑􀀝 􀀲􀁉􀁉:








Vehicles without Driving Assistance Package:






The distance warning function and the


autonomous braking function are deactivated.


When the vehicle is next started, the


middle setting is automatically selected.




Vehicles with Driving Assistance Package:






The distance warning function and the


autonomous braking function are deactivated.


Evasive Steering Assist is unavailable.


When the ignition is next started, the middle


setting is selected automatically and Evasive


Steering Assist is available.




% When Active Brake Assist is deactivated, the


æsymbol appears in the assistance






graphic in the multifunction display


Note from the instructions: Vehicles without Drivers assistance package (AKA p3) the engine must be running to change the setting.

Golions1781

So with all of that, are we now back to square one in that my car should allow me to set the Active Brake Assist to either Early, Medium, or Late and should not automatically be defaulting me to OFF?

c4004matic

Sorry for the confusion, my bad. Again, are you sure the engine is running when you change the settings?

Golions1781

I figured out the solution to my problem. I had been making the tweeks to my car while it was parked in my garage. Since the sensors were detecting things within close proximity to the car, it would not allow me turn on the active brake assist. I backed my car out into my driveway, where there was plenty of space, and I was able to set my Active Brake Assist.

gragsdale64

Just leased a 2017 E300 sport. I am having the same issues as Golions relative to the Active Brake Assist settings. Does car need to be "running" and not sitting in the garage to get the settings to "take" and not have it default to "Off"? i.e., Premium 1 and like Golions have spent the last week playing with the features and I have come across a possible issue with my Active Brake Assist. When I try to turn the functionality on (to any of the three options: early, medium, or late), within a second or so the car changes the setting back to OFF.