Beeping
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Newbie
Joined: Mar 2016
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GLC300
Beeping
Some mornings as I leave for work my GLC300 beeps a couple times and I see a red flash on the left side of the dash. It isn't particularly cold, I haven't left my lane. I leave early and there are no other cars anywhere around me and I have no idea how to figure out what is going on. Any thoughts? Thx!
Member
Joined: Feb 2013
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From: Camas, WA
Current: 2024 GLE350W4, 2016 Audi A8L Previous: 2019 C43W4
Some mornings as I leave for work my GLC300 beeps a couple times and I see a red flash on the left side of the dash. It isn't particularly cold, I haven't left my lane. I leave early and there are no other cars anywhere around me and I have no idea how to figure out what is going on. Any thoughts? Thx!
Here's what the marketing material reads on MBUSA's site:
"Radar-based technology alerts you if you're approaching a vehicle ahead, or even some stationary objects, at a speed and distance that suggest a collision is likely. As soon as the driver starts to brake, its Adaptive Brake Assist automatically provides the ideal level of braking, to help prevent a collision or reduce its severity. The system can also provide autonomous braking from speeds up to 65 mph, and can activate the features of PRE-SAFE®."
This is standard on every Mercedes-Benz vehicle in the US.
Junior Member
Joined: Feb 2016
Posts: 44
Likes: 3
MB GLC 300
I've had the same thing happen to me on two occasions - a beeping sound and a red triangle symbol appears on the left side of the dash. I looked in the manual, and it is the the Collision Prevention Assist warning. However, I have no idea why it went off. I wasn't even near any other vehicles or stationary objects, and I wasn't traveling particularly fast.
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Member
Joined: Mar 2013
Posts: 213
Likes: 29
From: Pennsylvania
2016 GLC300 4Matic
It's the CPA. Happened to me 4or 5 times -- even twice when cars were approaching quickly (but stopped just in front of me) from a right side parking lot exit intersecting my path of travel. I think it's a great safety feature, especially the "heads-up" warning I got in the event the cars exiting the parking lots failed to stop.
Thread Starter
Newbie
Joined: Mar 2016
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GLC300
Thanks all. It seems to happen in generally the same area (same section of the same street). No other cars around and nothing my eye could see that would be 'collision-worthy' but since it is in the same stretch of road I will assume the car is seeing something I can't. I wish the warning would stay more than the split second it does so at least I would know what it was!
Super Member
Joined: Feb 2010
Posts: 640
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2015 GL450
Near my house, there is a left turn that usually sets off the beeps. There is nothing noteworthy about it except that the lawn beyond the curb is a steep hill. The system cannot determine that I'm going to turn before running into that hill.
I've had the system trigger the brakes. There is a road I travel frequently on which people make left turns, but there is room on the right to go past them. I approached a stopped car waiting to to turn left with the intention of driving around them at about 40 mph. The brakes locked hard. It was impressive.
I've had the system trigger the brakes. There is a road I travel frequently on which people make left turns, but there is room on the right to go past them. I approached a stopped car waiting to to turn left with the intention of driving around them at about 40 mph. The brakes locked hard. It was impressive.
Super Member
Joined: Aug 2015
Posts: 565
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From: Cincinnati OH
2013 BMW X6 - Soon to be GLC300 4M
