TPMS Module

[bimjim]

Hi,

I'm having a few issues with my TPMS setup - 2003 Turbo.

I've just replaced all four sensors, as suggested by the Porsche dealer, but I'm still getting a 'System Not Active Workshop' warning. I suspect it's the module that will also need replacing.

Could someone explain where it is? I've searched and searched but I've not been able to find much detail online.

I really wish I'd just had this system disabled. :cursing:

Thanks. :help:

[JFP in PA]

Did you reset the system after changing the sensors?

[bimjim]

I selected the wheel type/size etc., which should start the learning process, as I understand it, but I still only get that message.

Is there another way to reset it that I don't know about? I guess the dealer will need to plug it in.

[JFP in PA]

Did you do the selection after driving the vehicle for about 5-10 miles, or while it was still parked?

[bimjim]

I've done both now but still no joy.

[JFP in PA]

OK, it sounds like you need to have it scanned and possibly do a "hard" reset suing the appropriate scan tool.

[bimjim]

Dealer it is then, hopefully just a reset needed.

Thanks for your help.

[JFP in PA]

Additional question: Did you make sure the sensors you used matched the frequency of the TPMS system? Porsche had a radio frequency change at one point and if the wrong sensor frequency is used, the module cannot see the sensors at all as it watches only one frequency.....

[bimjim]

Yes I did check that. They match the sensors which were removed, so that shouldn't be the issue.

[bimjim]

Does the hard reset need the full Porsche dealer setup or can this be done with a Durametric?

[JFP in PA]

Depends upon the year, check their features matrix on the web to see if yours is included.

[bimjim]

At short notice I managed to get it dropped off at the dealer this morning.

They've cleared the errors and reset everything and all appears to be working well. They're going to leave it overnight and confirm tomorrow.

I think the errors may have been caused by running winter wheels with TPMS sensors from a later Cayenne which operate at a different frequency. Is that likely?

JFP in PA - Thanks for your help. :cheers:

[JFP in PA]

The different frequency should not have effected the system, it should have simply ignored the signal because it was not what it expected.

Glad you got it sorted.