
Originally Posted by
blower
There is a little microswitch inside the gear selector unit that tells it when its in park - this commonly fails by intermittently sticking and results in the symptoms you are having. Eventually the microswitch will stay stuck completely.
The switch is used to tell the ECU when the gear selector is in park - if it gets stuck everything will still work but a code will be logged and PRNDS will flash. Cycling back from park to neutral will reset it but as you have found it will reoccur.
The only fix for this is to replace the entire gear selector unit - as its all sealed together and difficult to get into. Although you may be able to get at the microswitch with some WD40 and the straw....but this may just be a shot in the dark.
I had the exact same problem on my old Mk5 DSG, the gear selector unit can only be removed from underneath - so you have to remove the exhaust to get at the bolts - also you have to remove the gear knob itself and surrounding trim. I just picked up a second hand unit on ebay for about £40 iirc (it was some years ago now).
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