Frank996

I tried to get an answer by bumping this thread but no results, so I'm trying my luck this again buy starting a new thread.

1) I don't know if my 2009 997.2 C4S have the tire pressure measurement (TPM) installed (or not) as there were issues with the OBC from day one I got the car. These are now sorted, but Porsche Bern only look at what you tell them to look at, so how would I know (as some say it's standard other not and I believe the batteries in each of the tire valve sensors go dead after some years) if I have this or not?

2) If not, can I get these easily installed when changing tires at some point? Is it just a question about getting the valve sensors fitted and the PCM will pick up on the devices in each tire?

3) How useful is it in reality. I believe I read somewhere that the EU want's it to be standard in all new cars from a certain date but not sure...

Please keep in mind that something which is standard in the US is most likely NOT standard in Europe...

Tj40

I have a 2009 C2 - came with TPM. It's a North American car so implementation of TPM may be dependant on laws where you live - It has to be fitted by law in the US after 2008 model year vehicles.


Europe followed suit but not until November 2012 so you may not have it.

BER

Frank996,

I am not an expert on this matter, but I will attempt to help you.

I have a Durametric Pro and I noticed that there are several "coding" options that relate to the TPMS. I have the option of turning TPMS ON or OFF. I can change the information that is displayed in the lower half of the tach and some other TPMS features.

My 2012 997.2 C2S has the TPMS and it functions properly. The TPMS has sensors on the inside of each valve stem. I assume they have small batteries, but I do not know that for a fact. I have been told that the TPMS uses a unique valve stem. I have enclosed a picture of the TPMS valve stem. Compare it to yours.

If your valve stems looks like mine, there is a good chance you have TPMS. Tell Porsche Bern to activate and check your TPMS; they should also inform you of the status of the batteries. If they do not, ask them for the battery status.

Hope this helps you.

jhbrennan

TPM has multiple parts - transmitting sensor as part of the valve stem, receiving sensor in each wheel well, and all the necessary wiring, programming, etc. to get the readings in the OBC. So I guess the first step is to determine if the car came with TPM. If so maybe you just need new valve stem sensors and the OPC to program it. If you have an option list, maybe it will show whether the car was equipped that way. Valve stem sensors do have batteries and they usually have a useful life of 4 to 7 years. Batteries are not a replaceable item so if they are bad, new sensors will be needed.

Frank996

FANTASTIC!!! Thanks all for your replies.

Just what I was after so again, I cannot thank you enough for taking your time answering...

nismosd

You can also check if you have the tpms controller. It's located in the frunk by the brake booster. Refer to thread below
https://rennlist.com/forums/diy-subm...etric-pro.html

Tj40

TPMS transmitters in the valves are run off batteries, they'll go about 6 years and then start failing - replacement of the whole unit is the fix. My 2009 C2's are still working fine, one in my 2010VW Touraeg has failed so it's a bit of a crap shoot.

Petza914

Porsche made the TPMS standard in the 997 in the 2006 model year, in the US at least. It's one of the reasons I'm very glad both my 997s are 2005s. Dealing with the dead batteries in the transmitters, communication errors and dash warnings, having to select the proper tire format you're running in the menus to avoid the dash warnings, etc is all such a pain. I check my pressures often and in a car that handles as razor sharp as a 911 you can feel when a tire is low by 5 psi, especially a front one.

Frank996

Thanks a mill nismosd for sharing this... This is very helpful indeed. Need to find the old toolkit and hammer from the closet and give it a go...