Lane keeping assist

Lane keeping assist

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Discussion

Parsnip

Original Poster:

3,135 posts

195 months

Friday 14th May 2021
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... does not seem to be doing anything.

I have a 69 plate W177 A35 with "243 - Active Lane Keeping Assist (Camera)" and despite trying to provoke it - it doesn't seem to do anything?

Have enabled it in the menus, played with it in sensitive and normal mode, I get the white/green car between the lines light on the dash, but wandering across the lines doesn't trigger anything to happen. I don't get the "inoperative" message that a few folk seem to get, but it just does nothing?

Am I missing something obvious, or is this a dealer job? Car still well within warranty, just a bit annoying - seeing as the car as supposed to have it, it should be doing something?

Black AMG45s

749 posts

166 months

Friday 14th May 2021
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It is the first thing I switch off I find it quite a weird and effects how the car feels
As well you need to switch it off every time you get back in

As well if you overtaking cars it trys to intervene which annoying and dangerous

drdino

1,172 posts

149 months

Saturday 15th May 2021
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What speeds are you at when you try to provoke an intervention?

Parsnip

Original Poster:

3,135 posts

195 months

Sunday 16th May 2021
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Everything up to 70. I understand from internet people that it only works above 50 (although I don't think it says this in the manual)

matt3001

1,993 posts

204 months

Monday 17th May 2021
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If the icon goes green then its working and trust me you'd know if it was working as its lethal.

I have it permanently disabled (buried deep in the settings) so it could be that if you didnt buy the car new and the previous owner also disabled it.

RicksAlfas

13,665 posts

251 months

Monday 17th May 2021
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I had an A200 as a courtesy car which had this switched on.
Absolutely frightened the life out of me when it activated. I'd only moved left to avoid a pothole too!
nuts

matt3001

1,993 posts

204 months

Monday 17th May 2021
quotequote all
What I would say is on dashed white lines sometimes you just get a mild vibration through the wheel. However, solid whites then its a huge jolt.

Parsnip

Original Poster:

3,135 posts

195 months

Monday 17th May 2021
quotequote all
matt3001 said:
If the icon goes green then its working and trust me you'd know if it was working as its lethal.

I have it permanently disabled (buried deep in the settings) so it could be that if you didnt buy the car new and the previous owner also disabled it.
I have tried drifting and seeing what happens when it's green when I get close to a line - no warning, no terrifying brake application - nothing.

I have played with the settings in the visible menus - it shows it switched on, but I guess I wouldn't know if it had been disabled via a hidden menu or something by the previous owner.

I can't say from reading reviews I am too keen on it, but on the wife's CX5 I don't mind it - it isn't intrusive or dangerous - it just makes the steering a bit heavy if you drift towards a line.

matt3001

1,993 posts

204 months

Tuesday 18th May 2021
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Definitely sounds like its not working - next time you are passing a dealer i'd let them take a look

Freakuk

3,478 posts

158 months

Tuesday 18th May 2021
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When was it last in an MB dealer?

have you tried entering your VIN in MBdecoder? Have a look for code 8B8

Parsnip

Original Poster:

3,135 posts

195 months

Tuesday 18th May 2021
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Its got 243 - Active Lane Keeping Assist (Camera) but no 8B8.

it was last in a Merc Dealer last Juneish (off the top of my head) - I bought it at the start of this year.

Will mention it when I get aa service done - no big deal, but just a bit of a pest that you have a feature that doesn't work.

connoisseur21

55 posts

101 months

Saturday 22nd May 2021
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Mercedes are actively disabling LKA and auto park on nearly all new cars prior to customer delivery, though they are not mentioning same to customers who have paid for the features. Similarly the rumour mill says MB are now doing the same on existing customer cars at service time, again without telling the customer. Time for owners to avoid MB for servicing?

Something to do with MBs lo cost implementation of these features on many cars. This one likely to be a slow burn issue. Until recently MB were still selling both features to new customers through brochures and at Dealerships, but on delivery both had been disabled.

MB failed to brief its Dealers resulting in many running around trying to fix an issue for customers that was not fixable.

Look out for “ 8B8 Active Parking Assist Reduction” in the list of build codes against your VIN. No mention of customers being compensated for withdrawal of a feature they’ve paid for.

marky1

1,087 posts

203 months

Saturday 19th June 2021
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How do you permanently disable lane assist?

Ron240

3,084 posts

126 months

Saturday 19th June 2021
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marky1 said:
How do you permanently disable lane assist?
You cant...at least not by any conventional means.

marky1

1,087 posts

203 months

Saturday 19th June 2021
quotequote all
matt3001 said:
If the icon goes green then its working and trust me you'd know if it was working as its lethal.

I have it permanently disabled (buried deep in the settings) so it could be that if you didnt buy the car new and the previous owner also disabled it.
This says permanently disabled. Any idea how it can be done on a 2021 GLE.

Ron240

3,084 posts

126 months

Sunday 20th June 2021
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marky1 said:
matt3001 said:
If the icon goes green then its working and trust me you'd know if it was working as its lethal.

I have it permanently disabled (buried deep in the settings) so it could be that if you didnt buy the car new and the previous owner also disabled it.
This says permanently disabled. Any idea how it can be done on a 2021 GLE.
I have a 2020 CLA with the latest version of MBUX and I can guarantee there is nothing "buried deep in the settings" to permanently disable lane keeping assist.

marky1

1,087 posts

203 months

Monday 21st June 2021
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Okay, that's what I thought too. Thanks for the clarification Ron.

Parsnip

Original Poster:

3,135 posts

195 months

Tuesday 22nd June 2021
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To close the loop on this a little.

The lane assist in my car does seem to do something.

At higher speeds, when the icon is green, mine will pop up with a warning if I try to cross a solid line at the edge of the carriageway, vibrate the steering a bit and put up an "invisible wall", but it will do nothing at all over a dashed line.

I was a passenger in a friends A180 and hers does a full on violent course correction when trying to cross any sort of line.

I have no idea if the A35 has a different take on things, or if mine is just a bit borked, but I'm happy with it as is to be honest. The system in the wife's Mazda is much better - it just makes the steering feel really heavy whenever you cross any line without indicating - enough that you know its doing it, but not enough that you can't just ignore it if you want to - I just assumed the Merc one would be the same. Mine seems to do so little it isn't really overly useful to have (although I guess it stops you driving clean off the motorway) and the one fitted to the A180 was terrifying.