Fake Tire Pressure Alert on Lucid Air Touring

[debsen63]

I have a weird problem and would appreciate any feedback. Here's the problem:

Over the past six weeks or so, may be a bit longer, I have been getting alerts related to low tire pressure. The recommended tire pressure for these tires is 50PSI. But the alerts tell me that a tire is, say, at 44 and should be looked at. However, here's the problem and why these are fake: most often, these alerts also show the tires that are doing fine. And they show a pressure of 45PSI. I have no idea why a 45PSI would be considered normal, and even if so, why it would qualify as normal, but 44PSI won't. Sometimes, the normal could be 44PSI and the abnormal could be 43PSI. It is NEVER up to 50.

Second, the tire that is considered normal, and the one considered abnormally low, rotates. At times, the driver side front tire is normal and the others are low. At times, both passengers side tires are normal but the other two are low. And these rotate each time I go back and check. Initially, I would check every ten/fifteen minutes. But now, this is so routine and fake that I check it every couple of days.

Through this entire period, there has been NO change in fuel efficiency. No change in drive quality. Everything is fine. It's been especially cold in the northeast and the car has performed admirably. Now it's warming up, and the car is doing well as it usually does.

I contacted Lucid a few times. Roughly speaking, their answer has been "this will probably be fixed by an update." Well, that update has not arrived. This included a mobile support visit by a very nice man who came to fix the frunk, saw the problem, and referred me to "the upgrade."

Has anyone seen this problem?

Another fact:
Many thousand miles ago, I had to replace one tire because it took a nail.

Any help would be much appreciated.

 

[newlucidguy]

a little hard to follow the story but one question - where are you getting the 50lbs as recommended, the tire manufacturer or the sticker inside the driver door of your vehicle? what does the sticker inside the door say, that would be the recommended pressure and probably what the TPMS is looking for. Also some have mentioned that one tire will give an alert while others don't at the same pressure, and it's been said that it may be due to rounding (the alert tire is actually rounding down and the others not yet).

 

[debsen63]

a little hard to follow the story but one question - where are you getting the 50lbs as recommended, the tire manufacturer or the sticker inside the driver door of your vehicle? what does the sticker inside the door say, that would be the recommended pressure and probably what the TPMS is looking for. Also some have mentioned that one tire will give an alert while others don't at the same pressure, and it's been said that it may be due to rounding (the alert tire is actually rounding down and the others not yet).

it's PSI. the sticker inside the driver door has 50PSI (or 49PSI, i can't recall right now). yes. one or two or three tires will give an alert, while one will stay normal. and the normal will show something like 45PSI.

it could well be rounding. but i am surprised that a 45PSI would be considered normal (no amount of reasonable rounding will get it up to 50PSI).

 

[debsen63]

it's PSI. the sticker inside the driver door has 50PSI (or 49PSI, i can't recall right now). yes. one or two or three tires will give an alert, while one will stay normal. and the normal will show something like 45PSI.

it could well be rounding. but i am surprised that a 45PSI would be considered normal (no amount of reasonable rounding will get it up to 50PSI).

Oh, another one you asked: yes, I have gotten 50, 49 etc in the past. For many thousand miles. In fact, about two years ago, I had to put air in the tires and I got those recommended numbers.

This particular issue is a temporary one.

 

[newlucidguy]

it's PSI. the sticker inside the driver door has 50PSI (or 49PSI, i can't recall right now). yes. one or two or three tires will give an alert, while one will stay normal. and the normal will show something like 45PSI.

it could well be rounding. but i am surprised that a 45PSI would be considered normal (no amount of reasonable rounding will get it up to 50PSI).

rounding would be for less than 1 PSI difference. maybe try to reset your tire size setting in the car's menu and drive for some time and see if the problem goes away (or try setting it to a different size then set it back to your correct size). also would be helpful to check what your actual tire pressure is when you get an alert so you can know whether the car is reporting the pressure correctly (without regard to the alert). if the tire pressure isn't being reported correctly, I'd submit a warranty claim to have the pressure monitors replaced.

 

[socktucker]

Have you rebooted the car?

 

[RandomDesign]

This is one of the Gravity subforums, you might get a few more eyes on this and answers in the Air forums.

 

[jedwin]

My guess is that the system is just set to trigger once it goes below 45. Yes, 49 is the target, but given the variation that can occur with ambient temperatures and driving, most people wouldn’t want to trigger an alert every time it drops to 48.

My experience with other similar tire pressure monitoring systems is that there is a threshold below which the alert goes on. For example, on my Avalon, it was when it hit 29psi even though the nominal was 32….about 10% below nominal, similar to your Air experience.