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This is a discussion on Red Triangle with "Problem" on the MFD? within the Gen II Prius Care, Maintenance and Troubleshooting forums, part of the Gen II (2004-2009) Toyota Prius Forums category; Today, twice on the way to work and 3 times on the way back, for no apparent reason, I got ...


Red Triangle with "Problem" on the MFD?

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Old 09-11-2007, 08:47 PM   #1
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Today, twice on the way to work and 3 times on the way back, for no apparent reason, I got the Red Triangle with an exclamation point, and the description on the MFD just said "Problem".

Well "Problem" could mean a world of things, so I am making an appointment at the dreaded dealer first thing in the morning.

In the meantime, I already searched both the manual and the Priuschat forum with no success. Does anyone have any ideas about this?


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Old 09-11-2007, 08:47 PM   #2
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Today, twice on the way to work and 3 times on the way back, for no apparent reason, I got the Red Triangle with an exclamation point, and the description on the MFD just said "Problem".

Well "Problem" could mean a world of things, so I am making an appointment at the dreaded dealer first thing in the morning.

In the meantime, I already searched both the manual and the Priuschat forum with no success. Does anyone have any ideas about this?


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Old 09-12-2007, 10:51 AM   #3
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Not much to go on... all we can say is, let us know what the dealer finds, including all trouble codes.
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Old 09-12-2007, 10:51 AM   #4
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Not much to go on... all we can say is, let us know what the dealer finds, including all trouble codes.
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Old 09-13-2007, 08:44 AM   #5
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<div class='quotetop'>QUOTE(richard schumacher @ Sep 12 2007, 10:51 AM) [snapback]511267[/snapback]</div>
Quote:
Not much to go on... all we can say is, let us know what the dealer finds, including all trouble codes.
[/b]
Make sure all of your doors are shut. I got the Triangle and found out that one of my doors was slightly open and I got the warning. FishHawk
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Old 09-13-2007, 08:44 AM   #6
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<div class='quotetop'>QUOTE(richard schumacher @ Sep 12 2007, 10:51 AM) [snapback]511267[/snapback]</div>
Quote:
Not much to go on... all we can say is, let us know what the dealer finds, including all trouble codes.
[/b]
Make sure all of your doors are shut. I got the Triangle and found out that one of my doors was slightly open and I got the warning. FishHawk
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Old 09-13-2007, 07:41 PM   #7
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OK - here's what the dealer said:

There were no codes registered, but they noticed that the oil level was low, and when they put it on the lift they saw that the oil filter was loose and leaking. So their best guess is that the sensor was just starting to get to the point of warning me, but as the oil was sloshing around it was reset before the code was registered.

Does that sound right?

Anyway, I'm bringing the bill for $98.00 to the place that has been changing my oil for the past year.

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Old 09-13-2007, 07:41 PM   #8
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OK - here's what the dealer said:

There were no codes registered, but they noticed that the oil level was low, and when they put it on the lift they saw that the oil filter was loose and leaking. So their best guess is that the sensor was just starting to get to the point of warning me, but as the oil was sloshing around it was reset before the code was registered.

Does that sound right?

Anyway, I'm bringing the bill for $98.00 to the place that has been changing my oil for the past year.

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Old 09-13-2007, 11:30 PM   #9
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<div class='quotetop'>QUOTE(Rand Reed @ Sep 13 2007, 07:41 PM) [snapback]512210[/snapback]</div>
Quote:
OK - here's what the dealer said:

There were no codes registered, but they noticed that the oil level was low, and when they put it on the lift they saw that the oil filter was loose and leaking. So their best guess is that the sensor was just starting to get to the point of warning me, but as the oil was sloshing around it was reset before the code was registered.

Does that sound right?
[/b]
Not really. If an oil filter is loose enough to drop your oil level, it's generally loose enough to unthread itself and fall off. Even if that hadn't yet happened, the underside of your car should be covered in oil, if their hypothesis is correct. And the sensor that "was just starting to get to the point of warning me" - were they referring to the oil pressure sensor? A low oil level doesn't usually cause low pressure until the oil pickup starts sucking air.

How many miles after the oil change was it brought in to the dealer, and how low was the oil level?


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Old 09-14-2007, 10:59 AM   #10
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If 2006 Prius (and newer) throw MFD warnings upon low oil pressure, this would be great news! Something (ahem) I have been whining about for years. The last 3 (older) Prius that suffered catastrophic oil-outs just lit up the (ignorable) oil pressure warning light. Only one of those needed a new engine, if I've got my facts straight.

RandReed, I wish you'd get the current batch of engine oil analyzed to confirm that no important 'erosion of contact surfaces" has occurred. Clean report there and you can drive happy. Forever, most probably.

And maybe think about doing those engine oil changes yourself?
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