Introduction - and a TPMS question

[LCtoLX]

Just joined. Been in SUV’s (mostly) for years.

Bought a 96 LC for my wife in 98. Then a 2001 LX for myself in 2004. Gave the LX to my wife in 2005 when I got a company car. Missed driving an SUV so flew to Salt Lake City in 2006 to pick up a 2003 LC.

Picked up a 2018 LX570 back in January (in Houston). I plan to rotate the tires myself (all 5) and was wondering if I need to have the locations reprogrammed by a dealer or via an aftermarket “tool”. Or does this newer LX have the ability to determine the location of the various TPMS ID’s?

Would prefer staying away from any dealer if possible. I don’t trust dealers. Used to be a mechanic for a few months at one in a previous life. But I digress.

Cheers,
John

 

[sdnative]

I don't think the truck knows which positions the sensors are mounted in. It just knows there should be 5 sensors reporting within a pressure range. Shouldn't require any reprogramming after a rotation.

 

[LBridges]

Assuming the '16+ LX uses the same TPMS as the '16+ LC....

For rotations the truck will pickup and accurately report where the wheels are mounted with no need for a tool.

However, if the TPMS modules are changed the truck will not identify them without use of a tool.

But the Carista OBDII module & software (and maybe Techstream) will allow you to do the reprogramming without dealer/tire store help. So switching between road and off-road or winter tires can be done at home.

 

[tincan45]

It's not that smart. You could use an analog approach. Lower each tire by 5 lbs to identify and label each wheel or valve stem 1-5 according to the list. That way, even after tire rotations, you just have to glace at the wheel to know which one is being displayed.

 

[Sandroad]

My ‘17 is that smart. After rotation the system picks up the pressure in each tire in its new location. The ‘18 LX will be the same. All pressures are displayed at once in their location in the left dash display.

 

[tincan45]

My ‘17 is that smart. After rotation the system picks up the pressure in each tire in its new location. The ‘18 LX will be the same. All pressures are displayed at once in their location in the left dash display.

Interesting...add that to the 16+ feature list.

 

[LCtoLX]

I don't think the truck knows which positions the sensors are mounted in. It just knows there should be 5 sensors reporting within a pressure range. Shouldn't require any reprogramming after a rotation.

A current mechanic friend of mine mentioned that, depending on the make and model, recent model cars can tell where the tires are, even after moving them. My dash shows a diagram of all 5 wheels and the pressure in each of them.

Assuming the '16+ LX uses the same TPMS as the '16+ LC....

For rotations the truck will pickup and accurately report where the wheels are mounted with no need for a tool.

However, if the TPMS modules are changed the truck will not identify them without use of a tool.

But the Carista OBDII module & software (and maybe Techstream) will allow you to do the reprogramming without dealer/tire store help. So switching between road and off-road or winter tires can be done at home.

Good news. And thanks for the Carista info. My first and only OBD tool was purchased about 20 years ago. And My 2003 LC was my daily driver until earlier this year. I’ve got lots of learning and catching up to do, lol !

I just bought some 2020 LC “take off” wheels (18”) that I’ll eventually buy TPMS modules and Michelin’s for. Will need a tool then. I didn’t like the fact that the 21” OEM wheels limit tire choices and aren’t suited for occasional off roading.

Cheers,
John

 

[LBridges]

One more thought: something you will still have to do if you run two sets of wheels/tires, one being P-metric, the other being LT tires with higher load ratings and requiring higher inflation pressures.

In that case, when you switch you will have to use the reset button so the system learns the new "low pressure tire alert" value. I have no idea where it is on a LX. Should be in your owner's manual. No extra tools or help required.

 

[eatSleepWoof]

In that case, when you switch you will have to use the reset button so the system learns the new "low pressure tire alert" value. I have no idea where it is on a LX. Should be in your owner's manual. No extra tools or help required.

On my '14, that button is at the bottom of the steering column. Best to get out of the car and stick your head down there to find it. I'd imagine the 16+ models have the button in roughly the same location.

 

[LCtoLX]

Thanks to everyone for you replies. I’ll likely do my 5 wheel rotation this weekend. The spare has never been on the ground and the other 4 are about 50 to 60% worn. Might as well spread the wear

I’m already shopping for some Michelins for the 18” LC wheels but will wait until my current tires get down to about 4/32” tread depth before buying anything. The wheels (still in boxes) are already taking up a lot or room. With tires mounted, I’d have nowhere to store them.

My wife asked me what I was planning on doing with the stock wheels. Beats me. Haven’t thought that far ahead. Probably just keep them “just in case”

Cheers,
John

 

[andyp]

Old thread bump - how long does it take for the TPMS to get the new location? Have a ‘19 LC. Short drive is still showing the old locations. Purposefully overinflated one a touch to see where it sits on the display.