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Warning orange triangles on mirrors staying on

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Old Aug 22, 2020 | 11:46 PM
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Alandf
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Warning orange triangles on mirrors staying on
Warning orange triangles on mirrors are staying on. RTM didn't help
All suggestions appreciated
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Old Aug 23, 2020 | 12:11 AM
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'71 Pinto
Check sensors/connections in rear bumper, see attachment.



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Old Aug 23, 2020 | 07:32 AM
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Are you not getting any warnings on the cluster about it? My car recently gave me the "radar sensors dirty" and "blind spot unavailable" warnings on the cluster while I was driving to the dealership on an unrelated matter. They scanned the car and ended up updating the "A90 software" according to the RO, which lists this software as pertaining only to the radar units for BSM and CPA+

Just throwing that out there. Normally on the W212 what we hear is corrosion on the BSM sensors.
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Old Aug 23, 2020 | 06:04 PM
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From the OP
I saw on a google search that some MB's keep the yellow triangles on the mirrors until your speed is over 20mph
Opinion or fact?
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Old Aug 23, 2020 | 09:38 PM
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Originally Posted by Alandf
From the OP
I saw on a google search that some MB's keep the yellow triangles on the mirrors until your speed is over 20mph
Opinion or fact?
on my ‘14 E550 that is correct. Both mirror triangles stay lit when under 20 mph
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Old Aug 24, 2020 | 07:52 AM
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Originally Posted by KEY08
on my ‘14 E550 that is correct. Both mirror triangles stay lit when under 20 mph
Same on my 2012 E350 Avantgarde. The warning triangles stay on to let the driver know the system is on, but inactive. They become active and go out at 32km/h.
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Old Aug 25, 2020 | 02:41 AM
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Weird Mercedes quirk, but true for all W212s through 2016. I actually grew to like it - seems weird in loaners that it no longer works this way in newer Benz cars.

If you were having radar sensor issues you'd surely get warnings in the cluster.
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Old Aug 25, 2020 | 09:14 AM
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And park assist searches for open parking spaces under 15 MPH, if you have that option as well.
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