BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 5-Series (G30) Forum 2017+ BMW 5 Series (G30) General Discussions Very confused as to difference bet. ACC and TJA

Post Reply
 
Thread Tools Search this Thread
      06-18-2019, 02:55 PM   #1
S6F
Second Lieutenant
United_States
38
Rep
262
Posts

Drives: '19 540ixMsport
Join Date: Aug 2010
Location: Central NJ

iTrader: (1)

Very confused as to difference bet. ACC and TJA

If Iím driving in commuter traffic and want the car to maintain a safe distance to the car ahead, even if itís stop-and-go, do I use active cruise control, traffic jam assistant, or both?
Appreciate 0
      06-18-2019, 02:58 PM   #2
SteveinArizona
Colonel
United_States
2091
Rep
2,949
Posts

Drives: BMW 530e
Join Date: Jul 2016
Location: Greater Phoenix

iTrader: (0)

There is no button for traffic jam assistant. You simply use ACC and traffic jam assistant is part of that.
Appreciate 0
      06-18-2019, 03:13 PM   #3
S6F
Second Lieutenant
United_States
38
Rep
262
Posts

Drives: '19 540ixMsport
Join Date: Aug 2010
Location: Central NJ

iTrader: (1)

On page 209 of the manual it says that lane keeping and traffic jam assist are turned on by pressing the button that looks like a little steering wheel between two lane markings. Active cruise control is a different button. Still confused!
Appreciate 0
      06-18-2019, 03:16 PM   #4
SteveinArizona
Colonel
United_States
2091
Rep
2,949
Posts

Drives: BMW 530e
Join Date: Jul 2016
Location: Greater Phoenix

iTrader: (0)

Quote:
Originally Posted by stevefoster View Post
On page 209 of the manual it says that lane keeping and traffic jam assist are turned on by pressing the button that looks like a little steering wheel between two lane markings. Active cruise control is a different button. Still confused!
You are at least partly if not fully correct. It appears that for traffic jam assistant to work, you must depress the lane assistant button on the steering wheel. I am not sure if you need ACC as well.

For whatever it is worth, I think BMW ACC works great.
Appreciate 0
      06-18-2019, 04:47 PM   #5
gooselee
First Lieutenant
United_States
161
Rep
384
Posts

Drives: 2019 M550i
Join Date: Aug 2018
Location: Atlanta

iTrader: (0)

I always thought TJA was essentially the act of activating both LKA and ACC when traveling at slower speed. At least, that's how I use it and it seems to work well for me.

About to leave the office and sit in traffic - I may try just the LKA button but then I think I'd still need to work the pedals on my own. When I activate both buttons, I can be both hands and feet off for quite some time.
Appreciate 0
      06-18-2019, 05:53 PM   #6
ADS-UK
Captain
ADS-UK's Avatar
United Kingdom
474
Rep
988
Posts

Drives: G30 - 530d M Sport
Join Date: Feb 2014
Location: Edinburgh, Scotland

iTrader: (0)

Garage List
TJA requires both LKA and ACC to be active. It'll work up to the speed of 43mph. In those conditions it requires either lane markings or a vehicle in front for the car to follow. If both a vehicle and lane markings are present, car will prioritise the lane markings over following the vehicle in front.
Appreciate 1
clee1982745.00

Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:57 AM.




5post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST