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2004 porsche cayeene psm failure

Russ Myers
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Russ Myers Member

Russ Myers

Posted
Posted

could someone tell me what i am looking at. I have a 2004 cayenne v-6. I am getting a psm failure and 4wheel drive faulty error messages. Do I need a new transfer motor and ecu?

  • 1 month later...
vrichmd Member

vrichmd

Posted
Posted

Check your battery first.  Bad batteries cause all kinds of issues in Cayennes, especially the early years.  I have an '03 TT and just replaced a battery that was less than 3 years old.  The car was throwing the PSM failure code plus several other faults.  Replaced battery, cleared all faults and just fine now.  Ground issues also cause problems.

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