Liam john

Cayenne 955 03 showing "system fault workshop" with a yellow key symbol at startup on instrument cluster then dissapears after about 5 seconds. Car runs and drives well. The research I have done on related leads me to believe that i need to have the car plugged into PIWIS to resolve the fault. I'm hoping to not have to take it to Porsche here in Melbourne Australia, would prefer to go to an Indi shop if anyone knows a good one here in Melbourne Australia?
Im considering trying/ installing a new ignition switch module to see if that resolves the issue? does anyone have an idea if this issue could be solved without PIWIS?

Thanks

IchBautAuto

You can get a Porsche scanner like iCarSoft Por V3 here in Aust for very little money. Frankly I'd do that as you will find it very useful and possibly way cheaper than buying an ignoition switch module. Once you have one, no matter that it will not be at the factory scanner level, you'll wonder what you did without it.

Liam john

Thanks Ich Baut Auto, I do have a basic OBDII scanner that reads some of the Porsche modules, I have actually ordered a Foxwell NT710 last night and will see if i can test more modules with that.

Development:
so last night after more researching on the forums I found a suggestion that perhaps before startup if i press the brake, turn key to left then turn key to right (car starts) it clears the "system fault workshop message. Unfortunately the message returns if I touch or wiggle the key fob lightly in the ignition module... is this a sign of a faulty ignition module that needs replacing? or an issue with the key fob?

IchBautAuto

Frankly I couldn't say. Thats where a scanner will come in handy. As you know, the basic scanner only reads those codes Porsche is required to make available for emissions. You should get what you need from the Foxwell so probably worth waiting for it and then hopefully you'll get pointed in the right direction. I've recently had a Red fault that intermittently showed on the dash, wasn't able to be located by the scanner and turned out to be a missing bolt. While it could be electrical, keep an open mind on the options.

Petza914

Have you tried a new battery in the key fob?

Liam john

Yes battery in key fob is new.

Thanks.

Liam john

So my Foxwell NT710 arrived today and I ran a scan and it showed that the ignition module is faulty so I have one on order to replace the faulty one. From what I have read, this component does not need to be programmed to the key/car. So fingers crossed when it arrives in a few days I will be able to switch the ignition module out and fix the fault...

Liam john

update: issue resolved. I replaced the ignition control switch with a tested second hand unit ant it has fixed the problem. 10 minute job. ignition switch module is not programmed to the KESSY system and does not need to be keyed to existing key fob.