Can '08 LS TPMS memory remember more than 5 wheels at a time?

Changed over to my summer tires and teleios wheels, with their own TPMS modules, a few weeks ago and noticed the TPMS is reading all but one wheel...just says 'checking'.

Usually after swapping I have the new codes entered ($58 for a five-minute job, that's $696/hr ;-) I know the spare doesn't change, but was a bit surprised to see it reading the other three, yes they're all different codes.

This is my first swap back to the summer codes.

Whit

 

Well, don't keep us waiting, what is going on here?

Are the readings you are getting from the new tire/sensors? You know, let some air or nitrogen out and see what happens.

Where are the old tire/sensors? Are they in the trunk?

Is it possible that the shop that reinstalled your summer wheels changed the codes that are loaded in your car without your knowledge? Changing the codes that are in your car is something that many tire shops are equiped to do now. Or could they have moved the sensors from the winter wheels to the summer wheels to avoid changing the codes?

Inquiring minds want to know what is going on.

 

Unfortunately, the car can only handle one set of sensors (I'm not sure why you are not getting 4 "checking").

Hint, have them do a Print Screen before loading the new codes, and then again after they load the new ones. It will save them a lot of time when they reprogram each time.

 

For about $150 plus S&H, this OSBD tool will simplify the reading and programming of TPMS codes on Toyota & Honda wheels. I don't know yet if it will do likewise with Lexus, but I can't see why not... It is now available in Canada and the US. Honda Forums are also buzzing over this news. This would be especially handy for owners who swap seasonal tires twice a year.

Toyota Nation Forum Link

Drive Accord Honda Forums

 

I really don't have a clue, Grasshopper

The OEM wheels with installed Blizzaks and sensors are stacked on a wheeled dolly in the corner of the garage, awaiting the first snowflakes, probably sometime in November.

No one changed my sensors after they were initially setup. The OEM wheels have the original OEM sensors only with Blizzak tires now. My Telios wheels have a different set of sensors from a Sewell sale, along with the OEM tires. (Just haven't worn them out yet) I do all my own seasonal wheel swapping/rotating.

I have the 7-character alpha-numeric codes for the summer Telios wheels and winter OEM wheels. Being's the 10K service was coincident to the winter-to-summer swap out I had them reprogram the TPMS codes while it was in there Friday. (Also gave me a 2-hour chance to run around in a 2010 RX350 loaner)

I was just wondering if anyone knew the programming scheme for the TPMS. Like, is it capable of remembering more than five sensors and the reader just uses the last five entered while the previous ones scroll off the stack or are they just relegated to secondary status, but still recognizeable by the reader?

Whit

 

My experience with Honda's own programming tool was different...sorta.

Last October I bought four Blizzaks from Tire Rack. They recommended a list of installers they'd contracted with...one of them was a local Honda dealer just a couple miles away. I called them and told them I wanted them to install and balance the Blizzaks on my OEM wheels and install the newer Sewell-sourced Lexus TPMS sensors. (I'd put my OEM TPMS sensors on my newer Telios, summer, wheels earlier)They said they would do it all for $12.50/wheel, including the TPMS programming, they said they'd done them before.
Being's that was less than half of what Lexus wanted I decided to give them a try.

They did fine but did admit that they had trouble programming the Lexus TPMS system, but think they got it...well, they were mostly right.

The Honda-programmed TPMS dash readouts were sporadic. Sometimes they'd read properly and sometimes they wouldn't and the 'checking' indications would alternate positions on the displayed stack. It just wasn't quite 100% compatible.

After a few weeks of the intermittent messages I had Lexus do their reprogram for the $58.

Whit

 

Not surprised. The Honda & Toyota TPMS program options are different according to the discussions linked above.

 

Ok,so here's more info (FYI, I run two sets of wheels and have been through all this)

- You were not getting "checking" on the 4 main wheels because it was reading the other wheels when the car was in the garage. If you had driven for a while (about 20 minutes) the system would have realized that those wheels were not on the car.

- The codes are loaded via the ODBII port under the dash. Only 5 sensors are allowed on the new LS and new LX vehicles. Most of the less expensive ODB tools cannot load codes, altough the one inthe link above looks like it might work.

-Call your dealer and ask if they wrote down the old codes before they put the new ones in because few Lexus dealers have the tool to scan the codes off the sensors without taking the wheel apart.

- As an alternative to paying for the system to be reset twice per year, you could just live with the warning light during the winter.