GLS Class (X167) Produced 2020 to present

Warning light meaning ?

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Old Feb 27, 2026 | 08:03 PM
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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 ?
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Old Feb 27, 2026 | 09:18 PM
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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.
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Old Feb 27, 2026 | 09:55 PM
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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.
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Old Feb 27, 2026 | 10:23 PM
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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.
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Old Feb 27, 2026 | 11:38 PM
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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
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Old Feb 27, 2026 | 11:54 PM
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Definitely clean the sensor first
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Old Feb 28, 2026 | 11:09 AM
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Originally Posted by SW20S
Definitely clean the sensor first
+3
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Old Mar 2, 2026 | 09:59 AM
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Depending on options, it could be the cameras by the rear view mirror being obstructed or confused as well.
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Old Mar 2, 2026 | 08:05 PM
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Haven't been home to see about cleaning it.
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