GLS Class (X167) Produced 2020 to present

Warning light meaning ?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Feb 27, 2026 | 08:03 PM
  #1  
lungs414's Avatar
Thread Starter
Senior Member
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2009
Posts: 296
Likes: 51
From: New York
2024 GLS 580
Warning light meaning ?

I see this when I start it but don’t see it while driving. Active assist  I think. Does this mean there is a problem ?
I see this when I start it but don’t see it while driving. Active assist I think. Does this mean there is a problem ?
Reply
Old Feb 27, 2026 | 09:18 PM
  #2  
mikapen's Avatar
MBWorld Fanatic!
15 Year Member
Shutterbug
Community Influencer
Community Favorite
 
Joined: Oct 2009
Posts: 7,063
Likes: 2,218
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Originally Posted by lungs414
I see this when I start it but don’t see it while driving. Active assist  I think. Does this mean there is a problem ?
I see this when I start it but don’t see it while driving. Active assist I think. Does this mean there is a problem ?
Depending on when you see it, it's probably a system check showing you that the light works.
Reply
Old Feb 27, 2026 | 09:55 PM
  #3  
lungs414's Avatar
Thread Starter
Senior Member
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2009
Posts: 296
Likes: 51
From: New York
2024 GLS 580
Originally Posted by mikapen
Depending on when you see it, it's probably a system check showing you that the light works.
Thanks for the response. But it seems weird that it’s the only light on. I may go down to the dealer and see if I can ask them.
Reply
Old Feb 27, 2026 | 10:23 PM
  #4  
superswiss's Avatar
Out Of Control!!
5 Year Member
Community Influencer
Loved
Community Favorite
 
Joined: Nov 2018
Posts: 11,638
Likes: 5,457
From: San Francisco Bay Area
2019 C63CS
Forward collision warning and emergency brake assist is off when you see this. Actually in your case I think it's indicating a malfunction. If the word Off is also displayed above it, then it was deliberately turned off, but without that I'm pretty sure it means malfunction.

Yep, here's what I see if I turn off ESP in my car, which then also turns off the forward collision system. Notice that it says Off in addition to the symbol you are seeing.


Last edited by superswiss; Feb 27, 2026 at 10:28 PM.
Reply
Old Feb 27, 2026 | 11:38 PM
  #5  
lungs414's Avatar
Thread Starter
Senior Member
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2009
Posts: 296
Likes: 51
From: New York
2024 GLS 580
Originally Posted by superswiss
Forward collision warning and emergency brake assist is off when you see this. Actually in your case I think it's indicating a malfunction. If the word Off is also displayed above it, then it was deliberately turned off, but without that I'm pretty sure it means malfunction.

Yep, here's what I see if I turn off ESP in my car, which then also turns off the forward collision system. Notice that it says Off in addition to the symbol you are seeing.

Yeah no "X" or word off. I wonder if it's a dirty sensor. We had crazy snow around here for the last week. I will check that first.
Thanks
Reply
Old Feb 27, 2026 | 11:54 PM
  #6  
SW20S's Avatar
MBWorld Fanatic!
Community Influencer
Active Streak: 30 Days
Loved
Community Favorite
 
Joined: Jun 2015
Posts: 9,328
Likes: 4,730
From: Maryland
2024 S580
Definitely clean the sensor first
Reply
Old Feb 28, 2026 | 11:09 AM
  #7  
EWL5's Avatar
MBWorld Fanatic!
Photogenic
Liked
Loved
Community Favorite
 
Joined: May 2023
Posts: 1,134
Likes: 317
'23 GLS450
Originally Posted by SW20S
Definitely clean the sensor first
+3
Reply
Old Mar 2, 2026 | 09:59 AM
  #8  
jkaetz's Avatar
Super Member
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2011
Posts: 542
Likes: 232
2021 GLS580 | 2011 ML350 BlueTec | 2009 Pontiac G8 GXP
Depending on options, it could be the cameras by the rear view mirror being obstructed or confused as well.
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

 Verdad Gallardo
story-1

8 Oddball Mercedes Ideas That Actually Made it to Production

 Verdad Gallardo
story-2

Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

 Verdad Gallardo
story-3

Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

 
story-4

7 Craziest Things AMG Gas Ever Built

 Verdad Gallardo
story-5

New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

 Verdad Gallardo
story-6

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-7

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-8

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-9

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
Old Mar 2, 2026 | 08:05 PM
  #9  
lungs414's Avatar
Thread Starter
Senior Member
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2009
Posts: 296
Likes: 51
From: New York
2024 GLS 580
Haven't been home to see about cleaning it.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 07:05 AM.

story-0
New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

Slideshow: Mercedes-AMG's updated GLE 63 S and GLS 63 bring a new-generation V8, subtle design revisions, and familiar supercar-rivaling performance figures.

By Verdad Gallardo | 2026-06-17 12:52:51


VIEW MORE
story-1
8 Oddball Mercedes Ideas That Actually Made it to Production

Slideshow: Mercedes has never been afraid to experiment, and some of its strangest ideas turned out to be surprisingly successful.

By Verdad Gallardo | 2026-06-10 17:43:40


VIEW MORE
story-2
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

Sideshow: A Middle Eastern tuner has transformed the Mercedes-AMG G 63 into an open-top special, replacing nearly every exterior panel in the process.

By Verdad Gallardo | 2026-06-10 15:29:50


VIEW MORE
story-3
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-4
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-5
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-6
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-7
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-8
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-9
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE