E-Class (W212) 2010 - 2016: E 350, E 550

Weird Issue 2014 W212 E350

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Old 11-29-2023, 11:33 PM
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Weird Issue 2014 W212 E350

Every now and then, maybe once or twice a week I have the red triangle come on with beeps for a couple of seconds then disappears.

What is this red triangle signifying?

Kind of an annoyance.

Hope someone can help.
Thank you.


Old 11-30-2023, 09:04 AM
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W212 M276 DELA 30 ; W211 OM642 ; R107 M117, Sierra 1500 LZ0
It may be a collision warning. If someone's break lights come on and I don't apply the brakes in what the car considers a safe distance, it will mute the music and flash a red warning to me to get my attention. It happens so fast that I can't remember if it's a triangle or just the whole digital cluster that flashes.
Old 11-30-2023, 09:48 AM
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Originally Posted by DubVBenz
It may be a collision warning. If someone's break lights come on and I don't apply the brakes in what the car considers a safe distance, it will mute the music and flash a red warning to me to get my attention. It happens so fast that I can't remember if it's a triangle or just the whole digital cluster that flashes.
Sounds right.

I always try to keep a safe distance but this makes sense.
Old 12-02-2023, 02:02 AM
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Mine does same thing as well, I referred to the manual and it was related to collision warning . I have come across this warning in the W222 as well
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Old 12-02-2023, 04:17 AM
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MY'14 W212 M276 3.5NA @55kMi
beep-beep .... frontal ghosts

Originally Posted by hogger453
Every now and then, maybe once or twice a week I have the red triangle come on with beeps for a couple of seconds then disappears.

What is this red triangle signifying?

Kind of an annoyance.

Hope someone can help.
Thank you.
It is the "Pre-Safe system" getting ready for service. It is a real good one to keep in working order.
​​​​​​
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Old 12-02-2023, 07:51 AM
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I get the beep when I drive through a certain intersection (not a 4-way light, either). Not another car or pedestrian in sight. I chalk it up to some electronic signal I can't perceive.
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Old 12-03-2023, 12:28 PM
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2014 mercedes e 350
Originally Posted by hogger453
Every now and then, maybe once or twice a week I have the red triangle come on with beeps for a couple of seconds then disappears.

What is this red triangle signifying?

Kind of an annoyance.

Hope someone can help.
Thank you.
I get the exact same thing. It’s the pre-safe warning. Mine does it sometime as I go thru an intersectional that has several lanes of cars going different ways.

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