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Background:  Not sure if it's a coincidence as I tend to have bad luck but I recently had a set of steel H & R springs installed on my Panamera 4S, and for the first day I had no issues.   Today, two times, I was using manual mode (maybe significant, may not be) and three error messages came on simultaneously; "PSM Failure",  "All Wheel Drive malfunction", and "Transmission Failure"  The car would not go into Sport, Sport Plus or, PSM suspension settings and would shift but with significantly less  power "limp mode".  I immediately turned off the car and turned it back on and the messages disappeared and the car ran fine, this happened twice today, and only while I had the car in Manual mode.  The car is out of warranty but curious if anyone has any

IMG_0208.jpg

Edited by Alena Darrick Duran

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, they said that the car's battery, when disconnected probably tripped up the computer.  They reset the computer but it soon started acting up again.  I'm going to take it back since it needs an ignition coil replaced anyway.  Who knows maybe that will fix it.  

Edited by Alena Darrick Duran

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I have the same exact issue. What if any results did you get. I replaced my ignition coils and cleaned lines with sea foam. Still going into limp mode.

 

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On 11/21/2017 at 3:23 PM, solo619sd said:

I have the same exact issue. What if any results did you get. I replaced my ignition coils and cleaned lines with sea foam. Still going into limp mode.

 

did you get it fix?

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Yes, I'd also be interested in the result of this as we had the same messages for a 2013 Panamera 4 without only 5800 miles, no mods. 

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Folks - you will need a Porsche specific tester to identify these sorts of faults.

The displayed message could be caused by several different faults in the system.

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My 2011 Panamera base showed “fault transmission” and went into limp mode. Turned off the car and restarted. No more message and it ran fine. Took car to dealer to get checked out as a precaution. They are saying that the dme and trans are not communicating.  They have to replace the dme or the entire transmission! WTF?  They said it may be due to a battery replacement by the previous owner and that the battery was not “coded”. Sounds like BS. Anybody heard of this?

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