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      01-15-2019, 02:46 AM   #1
supersebbo
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Lane Departure Warning

Has anyone seen this actually work?

Supposed to give a dash indicator and rumble the steering wheel if you drift over a lane marking without indicating.

Spent a few minutes trying to force it to alert on the way in this morning by drifting over the line. Didn't go off once.
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      01-15-2019, 02:52 AM   #2
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Yes it works on mine, the vibration is extremely light though, even on the highest setting!
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      01-15-2019, 03:18 AM   #3
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This^

I think it reacts too late. It only lightly vibrates the steering when the wheels are on the white line ....... therefore you can feel the white lines and cats eyes ...???
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      01-15-2019, 03:30 AM   #4
supersebbo
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Does the dash indicator change when it happens? It’s always a green light for me.
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      01-15-2019, 03:38 AM   #5
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Quote:
Originally Posted by supersebbo View Post
Does the dash indicator change when it happens? It’s always a green light for me.
The green light indicates that the system has registered and is following a road marking. I don't think it changes when the wheel vibrates??
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      01-15-2019, 04:55 AM   #6
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Quote:
Originally Posted by ep22jg View Post
The green light indicates that the system has registered and is following a road marking. I don't think it changes when the wheel vibrates??
No change of the indicator. The only warning is the too subtle vibration in the steering wheel. That also is quite late, as mentioned.

If the indicator in the dash goes away, usually it's because speed decreasing under the limit (70kmh here I believe), or that the lines are covered with sh*t.

If searching the forum, you will also find a thread about vibration not working in many cars. I think it was a design fault, making it stop after quality check in the factory ..

/n
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      01-15-2019, 05:10 AM   #7
BMWGuySweden
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I actually think it works fine. The vibration isn't too subtle for me
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      01-15-2019, 05:59 AM   #8
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Quote:
Originally Posted by supersebbo View Post
Does the dash indicator change when it happens? It’s always a green light for me.
If the dash icon is green (ie the system sees the lanes properly and your car is at the right speed), and the vibration warning is already set at maximum, you still felt nothing from the steering wheel while deliberately testing it by riding over the lane line, then a trip back to dealership is warranted. Before you do that though, you may want to ask a friend or relative to test it for you to see if they can sense any vibration from steering wheel. As other had suggested, the vibration can be subtle for some people and interpreted merely as road feedback instead of a deliberate warning.
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      01-15-2019, 06:25 AM   #9
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glad to hear I am not alone in thinking its WAY too subtle.

It SHOULD feel like the rumble strips on the highway, I would say mine is 25% less noticeable even on high setting.
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      01-15-2019, 06:53 AM   #10
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Completely agree with all the opinions above. I had a 5 series loaner and the vibration was noticeably stronger than on our X3. I may need to bring it back to have that looked at.
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      01-15-2019, 06:55 AM   #11
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I am the same... very very light, cats eye give more vibration off... my 640d was fine
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      01-15-2019, 10:15 AM   #12
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Mine works, although sometimes I wish it didn’t. I definitely feel the vibration if I stray over the line without the blinkers on. It’s actually pretty annoying and I may turn it off.
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      01-15-2019, 10:30 AM   #13
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Isn't the vibration setting (low, medium high) adjustable in iDrive?
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      01-15-2019, 10:48 AM   #14
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Lane Departure Warning

Yes, it is. Many reports that even on higher setting it's no very noticeable. Mine works ok for me, just like the rumble strips on the road.
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      01-15-2019, 10:49 AM   #15
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Quote:
Originally Posted by Tex94 View Post
Mine works, although sometimes I wish it didn’t. I definitely feel the vibration if I stray over the line without the blinkers on. It’s actually pretty annoying and I may turn it off.
Just use your blinkers
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      01-15-2019, 10:51 AM   #16
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Quote:
Originally Posted by Tex94 View Post
Mine works, although sometimes I wish it didn't. I definitely feel the vibration if I stray over the line without the blinkers on. It's actually pretty annoying and I may turn it off.
Drive safe, stay safe.
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      01-15-2019, 11:03 AM   #17
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I can actually hear the vibration more than I can feel it. It is almost as if the vibration unit is disconnected from the steering wheel.

I took into my dealership and they did a test drive, and told me it was working as intended. They also took apart the steering wheel and tightened everything, but I felt there was no difference.
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      01-15-2019, 12:37 PM   #18
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Quote:
Originally Posted by BMWGuySweden View Post
Quote:
Originally Posted by Tex94 View Post
Mine works, although sometimes I wish it didn’t. I definitely feel the vibration if I stray over the line without the blinkers on. It’s actually pretty annoying and I may turn it off.
Just use your blinkers
Maybe Tex94 ran out of blinker fluid?
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      01-15-2019, 01:22 PM   #19
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Quote:
Originally Posted by nogren View Post
Maybe Tex94 ran out of blinker fluid?
Lol...yes, you are correct that is the “right” answer. And that is why I have left LDW on. The negative reinforcement helps but there are still occasions when it causes issues such as being in a turn only lane on the highway and just following that lane but the lines on the highway diverge and the car wants me to go straight. Yes, turning the blinker on would fix that situation but strictly speaking it isn’t required in this case since it is a turn only lane. There are other examples too. But point taken on blinkers.
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      01-15-2019, 01:28 PM   #20
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Quote:
Originally Posted by nogren View Post
Quote:
Originally Posted by BMWGuySweden View Post
Quote:
Originally Posted by Tex94 View Post
Mine works, although sometimes I wish it didn't. I definitely feel the vibration if I stray over the line without the blinkers on. It's actually pretty annoying and I may turn it off.
Just use your blinkers
Maybe Tex94 ran out of blinker fluid?
Thanks for the reminder... I use my blinkers all the time and I should be getting a fluid change soon...
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      01-15-2019, 02:11 PM   #21
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Mine is set to medium and its plenty of feedback for me. In fact it intervenes so much that I'm starting to question my driving skills.
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      01-15-2019, 07:48 PM   #22
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Mine works fine! Vibration is subtle, but that’s all you need once you get used to it. You can also deselect steering intervention for it, which I do when not on dual carriageways or motorways. Also remember that lane departure is different to the semi-autonomous steering.
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