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E-Class (W213) 2016 -

BLIND SPOT TRIANGLE

 
Old 05-24-2019, 12:53 PM
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Mercedes Benz W213
BLIND SPOT TRIANGLE

Yellow warning light triangle in the door mirrors, has stopped working.
Only colour is now red! Any ideas, please?
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Old 05-24-2019, 01:11 PM
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If something stops working as it was firstly you should consult your dealer.

Here is some info about MB BSA. Also I do not recall the triangle ever being orange, it has always been red in my experience.
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Old 05-24-2019, 02:48 PM
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Agree with suby. Head to the dealer, get a snack, get a loaner and save your wear and tear for a day or so.

No brainer.
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Old 05-24-2019, 06:55 PM
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Ya, on the older 212 it turned yellow when under I think it was 20 mph or so. My 213 has never turned yellow, just red when there is car next to me.
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Old 05-25-2019, 01:01 AM
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I’ve never seen yellow with mine either.
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Old 05-25-2019, 11:04 AM
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I must concur. The only color blind spot I've had is the red triangle. Your yellow might have been a glitch. According to the owners manual, the triangle should be red.

Last edited by rustybear3; 05-25-2019 at 11:16 AM.
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Old 05-25-2019, 11:05 AM
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2019 E450 Cabriolet
Iíve had my E450 cab in for service a couple times and both times I got a non E-class loaner. Has a C250 and a GLA something.

First... wow are both cars seriously underpowered compared to my E450 but they also had the yellow triangle thing. It stays on to warn you itís not really looking in the blind spot under 20 mph. Why?!? That makes no sense. And I really found the constant warning in the mirrors distracting
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Old 05-25-2019, 11:14 AM
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Originally Posted by Jmravill View Post
Yellow warning light triangle in the door mirrors, has stopped working.
Only colour is now red! Any ideas, please?
As it pertains to your vehicle Blind Spot Assist yellow triangle is a readiness indicator when the system becomes active (about 20 mph) then disappears. If the system detects another vehicle this is indicated in the first stage by a red hazard warning triangle lighting up in the respective outside mirror. Have your dealer check it.

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Old 05-25-2019, 11:20 AM
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Originally Posted by konigstiger View Post
As it pertains to your vehicle Blind Spot Assist yellow triangle is a readiness indicator when the system becomes active (about 20 mph) then disappears. If the system detects another vehicle this is indicated in the first stage by a red hazard warning triangle lighting up in the respective outside mirror. Have your dealer check it.
This is not true on the W213. There is no yellow triangle under any circumstances according to the manual...only red. Page 209.

Last edited by rustybear3; 05-25-2019 at 11:23 AM.
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Old 05-25-2019, 11:26 AM
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Granted however, may be unmentioned variables involved since OP is convinced he had readiness triangle and now does not - 212, market, etc. this is why I emphasized "your vehicle". Should be clear if and when OP replies.
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Old 05-25-2019, 11:30 AM
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Know that on the previous MBs I had it was yellow when you started the car and also below I think 10-15 mph as you drove, it stayed on continuously and then it went away unless it turned red because it detected something. Have not really noticed on my 2019 as either I'm used to it or have not noticed that the Yellow is no longer there. Not sure why they'd take it away as it was a way that you knew the system on startup was actually working. I know it's pain but go to the owners manual and see what it says. Or as other have said, if in warranty drop by the dealer.
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Old 05-25-2019, 11:45 AM
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On startup red triangles are shown for a few seconds on my 2018 E300.
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Old 05-25-2019, 12:12 PM
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On my 212, I would notice the yellow triangle while driving down my street at low speeds, then it would go away. On my 238 I only see a red triangle as a warning.
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Old 05-25-2019, 01:18 PM
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Maybe it was senior moment and he was remembering his 212 and thinking the 213 was the same.
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Old 05-25-2019, 01:28 PM
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As usual, the OP doesn't state model or year car....just W213. Methinks he has a W212 and has posted in the wrong forum as 2012 Merc has pointed out. Until he reposts, there's no use of doing anymore second guessing.
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Old 05-25-2019, 02:20 PM
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Thanks for reiterating
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Old 05-25-2019, 11:24 PM
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From the Operator's Manual for the 2016 E-Class Sedan (p. 179):
Blind Spot Assist is not active at speeds below approximately 20 mph (30 km/h). Vehicles in the monitoring range are then not indicated. When Blind Spot Assist is activated, indicator lamp (1) in the exterior mirrors lights up yellow at speeds of up to 20 mph (30 km/h). At speeds above 20 mph (30 km/h), the indicator lamp goes out and Blind Spot Assist is operational.
If a vehicle is detected within the blind spot monitoring range at speeds above 20 mph (30 km/h), warning lamp (1) on the corresponding side lights up red. This warning is always emitted when a vehicle enters the blind spot monitoring range from behind or from the side. When you overtake a vehicle, the warning only occurs if the difference in speed is less than 7 mph (12 km/h).
The yellow indicator lamp goes out if reverse gear is engaged. In this event, Blind Spot Assist is no longer active.
The brightness of the indicator or warning lamps is adjusted automatically according to the ambient light.


From the Operator's Manual for the 2019 E-Class Sedan (p. 213):
Blind Spot Assist and Active Blind Spot Assist use two lateral, rear-facing radar sensors to monitor the area up to 130 ft (40 m) behind your vehicle and 10 ft (3 m) directly next to your vehicle.
If a vehicle is detected at speeds above approximately 8 mph (12 km/h) and this vehicle subsequently enters the monitoring range directly next to your vehicle, the warning lamp in the outside mirror lights up red.
If a vehicle is detected close to the side of your vehicle, the red warning lamp in the outside mirror flashes. If you switch on the turn signal indicator in the corresponding direction, a warning tone sounds once. If the turn signal indicator remains switched on, all other detected vehicles are indicated only by the flashing of the red warning lamp.
If you overtake a vehicle quickly, no warning is given.







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Old 05-27-2019, 09:08 PM
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How is it that there are multiple comments and potential suggestions for the OP, but we have not had any response?
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