CashT1874

I'm assuming there is an issue with the tire pressure sensors. Is this a DIY project, or do I have to take my car to the dealership or tire center? I tried the reset button under the dash, but that didn't seem to remove the warning.

2007 LS460L - 157K miles

jmcraney

The TPMS is a much discussed subject in this forum. Lots of knowledge here

Here are links to recent discussions that will help you get started:

https://www.clublexus.com/forums/ls-...s-display.html

https://www.clublexus.com/forums/ls-...hat-to-do.html

jmcraney

Oh, as for your original question, generally speaking Low Pressure Warning, is typically an indication that one or more wheels is reporting pressure that is below the warning threshold. And typically that is an inflation issue or a benchmark maladjustment issue - not a sensor issue - and can be resolved at little or no cost.

colfax

I have an 07 like you and received the same warning

turned out my TPMS sensors were like yours 13 years old and the original batteries wore out thus reporting problems

so I went to Discount Tire where they installed new sensors including the spare

about the spare, they would not install a new sensor on it because the tire was also 13 years old

so I asked them to put a cheap $100 tire on the spare and a new sensor, no problems since

i do not have the equipment, time or willingness to try to do all this myself, much easier to pay Discount Tire

Ledfam

yep, i just got low tire pressure warning today.. all 5 tires have exactly 35. im assuming a sensor but its not the yellow malfunction light, its the low pressure light. in the past, when it was a tpms sensor, the low pressure light did not come on but the yellow triangle light did. have to take it to have it checked out

jmcraney

So, what pressure do you think would trigger a low pressure warning?

RR601

Not an expert but I say just replace them at discount tire.
I did it earlier this year on my 2011. Since the average lifespan seems to be 5 to 10 years. Why deal with it later.
I had a problem with one stem leaking not the sensor. I just went ahead and ordered all lexus oem ones and had discount tire install.
Had to do it again I would just get the disc tire aftermarket ones.

Discount Tire

Yes, great info, and thank you for your business. The only thing i would add to this is that, if 1 or 2 TPMS batteries have died, its a good indication that they are getting near the end of their life due to them all being installed at the same time, unless one is damaged prematurely we usually recommend replacing them all at the same time.

When you first start the vehicle, does the pressure light flash a few times prior to going solid? If so, this can be a system indication of a malfunction, usually the loss of signal from a sensor. If the light is just solid it is usually pressure related. Feel free to swing by our stores if you are able, we would be happy to scan the sensors.

Most vehicles TPMS trigger at 25% below the baseline pressure (door placard).

@colfax @RR601

Thank you both for your business.

@CashT1874

If you would like a bit more information on the sensors here is a great reference. TPMS | Discount Tire

If you are near one of our Discount Tire stores, feel free to stop in, the guys would be happy to scan your sensors to determine if one or more has died, certainly at no charge.

If you have any questions or if there is anything we can do on our end to be of assistance feel free to reach out to us here.

Ledfam

yes, thank you discount tire- it WAS a tpms not communicating!😀

jmcraney

New passenger vehicles sold in the US, since 2008, are required to trigger at 25% below "baseline." But for the Lexus LS460/600s, and some others, the "baseline," more commonly called the benchmark, for the TPMS is not the pressure that is posted on the door placard. The benchmark for each wheel, including the spare, on the LS460/600s is independently settable.

Nospinzone

Excellent advice. While it may not cost more to replace one at a time, the expenditure of time and the aggravation to bring the car in repeatedly just isn't worth it.

Discount Tire

You got it! Plus there's no telling how long the others will last after the first one goes, could be a year, a few weeks, a few days.

As much as we love our customers, we aim to keep the visits as far apart as possible for the same vehicle.