TPMS Positions
 

Hi... I discovered today as I was adding air to my left rear tire that the DIC showed air pressure instead increasing in my right rear. I recently had new rear tires installed. Can I assume these guys inappropriately swapped the two sensors or is there something else that can causes a position issue on the tire pressure sensor readouts?? thanks.. bob...

nope, they installed the wheels on the wrong side, all u need to do is reprogram them, starting at Driver front, passenger front, passenger rear and then drivers rear.

Don't know for sure, but, could they have swapped the sides with your Rims after putting the new tires on?

Just go back and gave them reprogram. 3 min job.

there is no such thing as left side right or front back they all the same
they need to be re adjusted or service guys damage sensor when they put new tire.

uhggg, yeah there is, if they remove the right rear and put the sensor that was on the right rear on the left rear they put it on the wrong side, the sensors are programmed to a specific wheel location.

You don't need to reprogram the sensors when you get new tires, you just need to put them back on the same location.

this...:thumbs:

The tires themselves are both Directional and Asymmetrical. Additionally, the rears are larger than the fronts so as far as the rubber is concerned they had to order a specific left rear and a specific right rear tire.

But the two rear wheels??? Could they swap them before mounting the new tires on them??? Yep... And apparently they did..

bob...

Can someone share more about what reproamming actually means??? Who does it and what equipment is required??? I bought these rear tires and had them mounted at Discount Tire near my home.

I'm just not familiar with how these sensors get reassigned to locations on the car.

thanks.. bob..

Sorry but you are wrong Sr

There are tools on the market that can be used to reprogram the TPMS. They are handy DIY. Here is a link that has a video of their product.

TPMS Reprogramming Tool

Cheaper to bring the car back to the tire store.

No sir...come on over and I'll let you check the tires on our Malibu. I rotated them at home and now when I add air in right rear, right front pressure goes up on the DIC and on and so forth...Imagine being OCD about air pressures not knowing the car knows which end and which corner the tires are on and chasing that...I learned the hard way. :)


I was wrong once though...:D I thought I was wrong and it turned out I wasn't. ;)

No Sir, you are wrong, once the sensors are programmed, they are programmed to that wheel location, unless you reprogram them to the new location.

Which is easy to to if you have the tool.

BZZZZZZT!!! WRONG!!! The sensors themselves are identical except for an identification number and the BCM is programmed to associate a specific sensor number with a specific location. It seems like the sensor is being programmed because you move the programmer to each sensor location but it is actually the BCM that has the memory to remember which is which. That's how the car knows which tire is which when it displays the pressure or warnings. Once the BCM is programmed it always remembers which one is which until it is reprogrammed again.

The OP had a tire shop swap the rear rims left to right when they installed the new tires. The sensor that was programmed to be the right side rear is now on the left and vice versa. They were not damaged since they both still work. They just need to be reprogrammed. The OP can buy a programmer (expensive solution to a simple issue) or go back to the shop and have them correct their error by reprogramming all four sensors.

depending on what tires you have, you can just switch the wheels from side to side yourself otherwise you need to reprogram the sensors to a new location. they had a 50-50 chance to get it wrong :hide:

This happens with many tire changes because the C6 system gives more information than many other cars. Many cars have a TPMS system that just lights a light on the dashboard that tells the driver that a tire is low. It does not tell which one it is, so many tire places do not worry about which wheel is replaced in which position. I have a friend with a Subaru and all four wheels are the same and the system makes no distinction for the position of any wheel...so a tire place can put them on anywhere on the car. Take the car back to the tire place and they can re-program the system...or they can remove and switch the two rear wheels. The former is easier and faster.:thumbs:

So what do I tell (or watch for) at Discount Tire when I take it back to them to have them fix the error? mcandrew67 above said Driver front, passenger front, passenger rear, driver rear.

Does this programmer tool just know numbers, like 1, 2, 3 and 4?? And so would passenger rear need to be 3 (where it currently must be set to 4) and driver rear need to be 4 (where it currently must be set to 3)??

I would want to confirm that they had fixed the problem before I leave the shop which would likely mean to have them drop the air in one tire while watching the DIC, then fill it back up??

Now I just looked in the owner's manual and sure enough, it confirms what mcandrews67 said,

driver side front tire,
passenger side front tire, passenger side rear tire, and driver side rear.

So it's right in the manual. But again, does this programmer tool simply know numbers??? Like 1, 2, 3 and 4??? Or does it know something else, like actual location??? I just want to be somewhat knowledgeable when I wander into the tire place

thanks, bob...

First, they put the car into accessory mode, then they push both the lock and unlock buttons on the key fob at the same time. When the car horn honks, they put the tool on the left front tire right next to the tire valve and activate the tool. When the car acquires the sensor and records the ID into its memory it will honk the horn once. The person them repeats the tool sequence on the right front tire, followed by the right rear tire and finally the left rear tire. When the car has stored the sensor ID for the left rear tire it will honk the horn twice. That means the programming has been completed. Biggest issue is making sure the key fob is close enough to the car that it recognizes you are pushing both buttons.

If one of the sensors can't be recognized the system will not complete the programming and will fall back on the old sensor locations. If you find out one of the sensors can't be recognized and don't have a replacement sensor handy you can not have have one sensor programmed to two locations. Would be nice if track guys could do that if a sensor decides to take a dump in the middle of a track day Vs ruining the rest of the day.

Bill

There's a thread here about the TPMS sensors not correct from the factory. My car was incorrect and I had Museum delivery. So maybe they were wrong the first time?

I drove over to Discount tire and they redid it for me for free.

Mike

Bob, BEZ06 did videos for this:

http://forums.corvetteforum.com/c6-t...sor-tools.html

He is our 'in house' TPMS guru.:thumbs:

And another:
http://forums.corvetteforum.com/c6-t...ms-videos.html

And some of his racing video:
http://vimeo.com/user581818