Low oil pressure warning flash
#1
Driver School Candidate
Thread Starter
Low oil pressure warning flash
Usually on “cold starts” in my garage or whenever the car is sitting for a few hours or so the low oil pressure warning flashes for a split second when I start the car. Has anyone had this issue? 56k miles is350. Oil level is at the proper level. Using Toyota oil and filter as well
#2
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I'm not sure if what you're referring to is the normal situation where all the dash warning lights come on for a split second just before the car starts cranking. In that case the oil pressure light will come on for a split second, but then again so does every other light.
The light is triggered by a lack of pressure, so in theory it should be on for a split second while the car starts to crank and pressure builds.
If the oil level is full, then I would think that there is no issue.
It doesn't sound like anything abnormal is occurring.
The light is triggered by a lack of pressure, so in theory it should be on for a split second while the car starts to crank and pressure builds.
If the oil level is full, then I would think that there is no issue.
It doesn't sound like anything abnormal is occurring.
#3
Driver School Candidate
Thread Starter
I'm not sure if what you're referring to is the normal situation where all the dash warning lights come on for a split second just before the car starts cranking. In that case the oil pressure light will come on for a split second, but then again so does every other light.
The light is triggered by a lack of pressure, so in theory it should be on for a split second while the car starts to crank and pressure builds.
If the oil level is full, then I would think that there is no issue.
It doesn't sound like anything abnormal is occurring.
The light is triggered by a lack of pressure, so in theory it should be on for a split second while the car starts to crank and pressure builds.
If the oil level is full, then I would think that there is no issue.
It doesn't sound like anything abnormal is occurring.
#4
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Ah...I didn't realize it was an actual warning message on the cluster...I thought it was just the light you were referring to.
A video would be great!
What does the actual message say? if it's on long enough to read.
A video would be great!
What does the actual message say? if it's on long enough to read.
#5
Driver School Candidate
Thread Starter
it says low oil pressure warning. I had to crop down the video but you can see it flash quickly
#6
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Wasn't able to open the video on my Windows 10 PC or Samsung phone...I'm guessing it's an iPhone video (gotta love Apple).
Since the only way the car knows the oil pressure is from the Oil Pressure Switch, you could try replacing it and see what happens.
It's right on top the oil filter housing...it's a single wire connector and the switch screws into the housing.
Depending on how quickly it flashes I'm not sure if it's an issue or not. I can't say I've noticed on my IS, but then again I'm rarely looking at the dash right when it's cranking/fires. Usually I'm putting the phone in the holder or my seatbelt on.
I wonder if it matters what info screen you have it on or not...usually mine is set to the tire pressure for my F Sport gauges.
You already confirmed you are using 0W20 and an OEM filter...so it's really down to the oil pump or the pressure switch...once again, providing it's an issue to begin with.
If the light was on for more than a split second I'd be concerned, because it only takes a moment for the oil pump to turn and build pressure.
What year/model is you IS? Outside of it being a 350.
Since the only way the car knows the oil pressure is from the Oil Pressure Switch, you could try replacing it and see what happens.
It's right on top the oil filter housing...it's a single wire connector and the switch screws into the housing.
Depending on how quickly it flashes I'm not sure if it's an issue or not. I can't say I've noticed on my IS, but then again I'm rarely looking at the dash right when it's cranking/fires. Usually I'm putting the phone in the holder or my seatbelt on.
I wonder if it matters what info screen you have it on or not...usually mine is set to the tire pressure for my F Sport gauges.
You already confirmed you are using 0W20 and an OEM filter...so it's really down to the oil pump or the pressure switch...once again, providing it's an issue to begin with.
If the light was on for more than a split second I'd be concerned, because it only takes a moment for the oil pump to turn and build pressure.
What year/model is you IS? Outside of it being a 350.
#7
Instructor
Wasn't able to open the video on my Windows 10 PC or Samsung phone...I'm guessing it's an iPhone video (gotta love Apple).
Since the only way the car knows the oil pressure is from the Oil Pressure Switch, you could try replacing it and see what happens.
It's right on top the oil filter housing...it's a single wire connector and the switch screws into the housing.
Depending on how quickly it flashes I'm not sure if it's an issue or not. I can't say I've noticed on my IS, but then again I'm rarely looking at the dash right when it's cranking/fires. Usually I'm putting the phone in the holder or my seatbelt on.
I wonder if it matters what info screen you have it on or not...usually mine is set to the tire pressure for my F Sport gauges.
You already confirmed you are using 0W20 and an OEM filter...so it's really down to the oil pump or the pressure switch...once again, providing it's an issue to begin with.
If the light was on for more than a split second I'd be concerned, because it only takes a moment for the oil pump to turn and build pressure.
What year/model is you IS? Outside of it being a 350.
Since the only way the car knows the oil pressure is from the Oil Pressure Switch, you could try replacing it and see what happens.
It's right on top the oil filter housing...it's a single wire connector and the switch screws into the housing.
Depending on how quickly it flashes I'm not sure if it's an issue or not. I can't say I've noticed on my IS, but then again I'm rarely looking at the dash right when it's cranking/fires. Usually I'm putting the phone in the holder or my seatbelt on.
I wonder if it matters what info screen you have it on or not...usually mine is set to the tire pressure for my F Sport gauges.
You already confirmed you are using 0W20 and an OEM filter...so it's really down to the oil pump or the pressure switch...once again, providing it's an issue to begin with.
If the light was on for more than a split second I'd be concerned, because it only takes a moment for the oil pump to turn and build pressure.
What year/model is you IS? Outside of it being a 350.
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#8
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Thanks for pulling out the screenshot @NickCaesar ...good ole Apple.
#9
Driver School Candidate
Thread Starter
Correct me if I'm wrong, but the warning message is on at the same time as the warning lights as part of the startup cycle.
Thanks for pulling out the screenshot @NickCaesar ...good ole Apple.
Thanks for pulling out the screenshot @NickCaesar ...good ole Apple.
#10
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Definitely bring the video to their attention cause they will likely have a difficult time reproducing the issue.
If anything they will likely change the pressure switch if it's still under warranty. It's an inexpensive part and it's easy to change.
Let us know how it goes...I think you are the first person to report this specific issue.
If anything they will likely change the pressure switch if it's still under warranty. It's an inexpensive part and it's easy to change.
Let us know how it goes...I think you are the first person to report this specific issue.
#11
Driver School Candidate
Thread Starter
Definitely bring the video to their attention cause they will likely have a difficult time reproducing the issue.
If anything they will likely change the pressure switch if it's still under warranty. It's an inexpensive part and it's easy to change.
Let us know how it goes...I think you are the first person to report this specific issue.
If anything they will likely change the pressure switch if it's still under warranty. It's an inexpensive part and it's easy to change.
Let us know how it goes...I think you are the first person to report this specific issue.
#12
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The amount of oil that it takes for the dipstick to read from Low to Full is a quart.
So if they said the oil was low by a quart, that would make sense as to why you are getting the Low Engine Oil message.
However, if you checked the dipstick and the reading was closer to the Full mark, than the Low mark, this would be a contradiction of the dealers observation.
Realistically you both can't be right, the oil level was either Low or not.
I'm assuming the dealer is using the following method to check the oil level:
So if they said the oil was low by a quart, that would make sense as to why you are getting the Low Engine Oil message.
However, if you checked the dipstick and the reading was closer to the Full mark, than the Low mark, this would be a contradiction of the dealers observation.
Realistically you both can't be right, the oil level was either Low or not.
I'm assuming the dealer is using the following method to check the oil level:
Last edited by Sasnuke; 05-13-21 at 06:56 AM.
#13
drives cars
If it were me, I'd check the oil weekly/bi-weekly for a while to see if there's a noticeable drop. I would also check it at different times - i.e., when the car has been sitting overnight versus a few minutes after a drive during which the car got to operating temp.
#14
Could be:
Critically low oil
Slight blockage in oil galleries somewhere
Oil pressure sensor (though unlikely if only at start up, but still)
Dilluted oil/low viscosity of oil (does it do this on a fresh oil change?
Obstructed oil filter (does it do it on a new oil filter?)
A damaged/worn oil pump
Excess clearance in one or more of the bearing mains
What are your oil change habits?
I'd change the oil to brand new, including filter, and see if it does it. If so, you've at least ruled out the oil and filter... and you won't need to do an oil change for a while. Not bad for a $25 diagnoses.
Critically low oil
Slight blockage in oil galleries somewhere
Oil pressure sensor (though unlikely if only at start up, but still)
Dilluted oil/low viscosity of oil (does it do this on a fresh oil change?
Obstructed oil filter (does it do it on a new oil filter?)
A damaged/worn oil pump
Excess clearance in one or more of the bearing mains
What are your oil change habits?
I'd change the oil to brand new, including filter, and see if it does it. If so, you've at least ruled out the oil and filter... and you won't need to do an oil change for a while. Not bad for a $25 diagnoses.
#15
Driver School Candidate
Thread Starter
Could be:
Critically low oil
Slight blockage in oil galleries somewhere
Oil pressure sensor (though unlikely if only at start up, but still)
Dilluted oil/low viscosity of oil (does it do this on a fresh oil change?
Obstructed oil filter (does it do it on a new oil filter?)
A damaged/worn oil pump
Excess clearance in one or more of the bearing mains
What are your oil change habits?
I'd change the oil to brand new, including filter, and see if it does it. If so, you've at least ruled out the oil and filter... and you won't need to do an oil change for a while. Not bad for a $25 diagnoses.
Critically low oil
Slight blockage in oil galleries somewhere
Oil pressure sensor (though unlikely if only at start up, but still)
Dilluted oil/low viscosity of oil (does it do this on a fresh oil change?
Obstructed oil filter (does it do it on a new oil filter?)
A damaged/worn oil pump
Excess clearance in one or more of the bearing mains
What are your oil change habits?
I'd change the oil to brand new, including filter, and see if it does it. If so, you've at least ruled out the oil and filter... and you won't need to do an oil change for a while. Not bad for a $25 diagnoses.