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The info in your responses is elevating my expectation that a hardly used switch would fail in itself. It would be close to tragic having to invest in another replacement, which would be the 3rd in the vehicle. There are a number of procedures from which to choose and execute here. I have today ordered myself a Durametric to probe this issue, and any other potential issues. I consider the cost at half as I can use it for my Cayenne as well, which has a vapor sensor issue. Many thanks for the leg up .. .. and ttocs - I'm pretty sure it's not against the rules to give a shout out for your dealer there in IL
Thanks for the replies .. I had not thought the code (believe it was 708) could be cleared from the processor, and this action was not suggested by the mechanic. That voltage would be an issue is entirely plausible give there is the wiring interface to the unit. I ensure the battery is totally disconnected when the vehicle sits for an extended period, but that doesn't ensure optimum capacity when connected. That there is susceptibility to malfunction due to humidity is not ringing encouragement given being located in Honolulu. I haven't heard any comments of similar from other Porsche owners in the area. They driving is more frequent and/or regular, so perhaps the combination of infrequency and ambient humidity are a factor. There is not a possible contributor be any fluids. The transmission is dry and all the engine seals are okay. The engine oil is in such good condition you could even use some on your salad - well, maybe not that good! .. It is true, there are a myriad of associated issues with this components. An easy remedy is not anticipated, but replacing a multifunction switch that is virtually new would be a disheartening outcome .. Thanks ...
Let me preface with mentioning that I am not a mechanic .. The vehicle history I'm referencing was my fathers 2004 Boxster. He was elderly and drove the car infrequently such that the original mileage up to today is 11,500 mi. When my dad passed away he kindly left the vehicle to me. Shortly after receiving it, timed exactly with the first time I engaged the Tiptronic shifting, the dreaded flashing 4 occurred. On visiting a local Porsche mechanic/garage, and with OBD analysis, he reported the multifunction switch had failed and will require replacement. Coincidentally at this visit he inquired if the vehicle was not driven for extended periods - which it was. At the same time I requested the service records of the vehicle at the Porsche dealership. Within the records I found a service item that was replacement of the multifunction switch when the odo was sitting at 9,500 mi. The order was dated 22 months ago. To the point of this post - I believe the action of multifunction switch is to swivel to varied positions that set the next gear. That the mechanic had inquired about the usage characteristics, i.e. sitting unused for extended periods, leads me to sense that the switch is 'stuck' in one position. If this may be the case, would it not be possible to remove the unit and apply the factory lubricant and re-install .. or is the lack of movement catastrophic and requires replacement? Thanks! ..