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Warning lights that go away by themselves

BrianNakata

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Ever since I had my windshield replaced, which also included replacing the Power Distribution Unit (PDU) that failed while the technician was test driving my truck to verify the ACC calibration required by the new windshield, I'm occasionally getting warning lights that appear some time (some small number of minutes) after I start driving. This happens maybe one out of four times I drive. The lights I've seen are:

  • Forward Collision Warning
  • Lane Departure Warning
  • Vehicle Ride Height Warning (this one isn't in the manual - it's a side view of the truck with an up/down arrow in it)
  • Blind Spot Warning

Most of the time I just see the Forward Collision Warning and Vehicle Ride Height Warning.

When I come to a stop and the driver's display changes to an overhead view of the vehicle, there's a thick crosshatched ring drawn around the truck image indicating that the proximity sensors around the vehicle aren't working. They also aren't actually working since when I pass a vehicle, the normal yellow proximity indicators at the appropriate rear corner of the vehicle image don't show up. Also, ACC and Driver+ aren't available.

The weird thing is that when I get to where I'm going and leave the truck and it sleep resets, these "problems" go away when I return and drive away (everything works just fine). Also, if this doesn't occur after a few minutes of starting to drive, it doesn't happen for the duration of the drive. We recently drove from Portland, OR to Bend, OR (a 4 hr, 190 mi trip) and back, and in both separate trips, this issue didn't show itself.

How can this be an actual hardware problem? It seems more like their diagnostics are whacky and too sensitive or something.

The reason I say this is because I recently watched Ryan Shaw's video on his R1T (My Rivian R1T BROKE) and he had warnings about the HV battery and eventually his wife had to pull over because the vehicle said it would no longer drive. He called Rivian Support and the thing they suggested that worked was for her to perform a "walk away reset" - so she got out, locked it, and got a bite to eat or something. When she returned, the truck magically "repaired" itself and there was no problem with the battery, much like what I'm seeing with my different "failures".

Anyway, I'm reluctant to take this to the SC because it doesn't happen every drive and I HATE having a product with an issue returned to me and the vendor saying, "could not reproduce issue". I've done both the software and vehicle restarts and this issue still exists.

Anyone else see anything remotely like this?

Brian
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Bummer… we have had similar warnings.. but unfortunately it was 2 complete headlight system failure… both while hundreds of miles from home…

1st one… car was towed to our hotel.. when it arrive…. Wouldn’t you know? The headlights worked fine!

seems like some sort of assembly issues and poor connections, but who knows. I would just document every time, take videos, pictures and stay on the SC until you get an answer you can live with.

best of luck
 

SSteveEV

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I had one today that flashed up so quickly I couldn't even read it. Best I could tell it was a line drawing of the truck head on (possibly rear) with a red warning triangle in the lower left corner of the graphic. Whole graphic was about 3"*3" on the lower left of the instrument screen.

Anyone recognize that?
 

Voronbrg

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I had one today that flashed up so quickly I couldn't even read it. Best I could tell it was a line drawing of the truck head on (possibly rear) with a red warning triangle in the lower left corner of the graphic. Whole graphic was about 3"*3" on the lower left of the instrument screen.

Anyone recognize that?
could be the ultrasonic sensors. the owners manual has pictures of all the telltales.
 

ironpig

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A lot of these sound like possible loose connections.

I have one that happens once a month. It's a warning that the gear tunnel interior safety latch has been tiggered. It's actually an updated alarm - the old alarm said "person, animal or loose cargo in gear tunnel". (I posted about it here - Loose Animals!)

I suspect it's just some barely barely loose connector somewhere that triggers it because it's never a result of me having just used the gear tunnel or put something in there. It's totally random.
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