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2013 Panamera spurious gear change issue

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JGaudoin
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JGaudoin PCGB Member
2020/02/06 15:03:21 (permalink)

2013 Panamera spurious gear change issue

I'm a new owner of a 2013 Panamera 3l V6 diesel.
 
Intermittently the when driving on a relatively flat road at around 65 to 75 MPH, just cruising the car will suddenly change down from 8th to 7th gear. If I use the manual selection to place the car back into 8th gear, it will change to 8th but then after a few seconds it will go from manual gear selection back to automatic and return to 7th gear. The car remains like this for about 10 to 15 miles and then returns to 8th gear and no more issues. Using the sport and sport plus modes make no difference, once back in normal driving selection the issue remains for a while.
 
This gear change issue has occurred around 6 times in 4 months, over approximately 3,000 miles. I've taken it to Porsche Bristol, they say there are no fault codes and are unable to replicate the issue. I've sent them a video of the dashbord while to car is operating this way, but they seem to have no idea of what the problem might be.
 
If anyone has an idea or has experienced this type of issue and a cure, please let me know.
 
Thanks
 
Jim

2 Replies Related Threads

    Stringbag
    PCGB Member
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    Stringbag PCGB Member
    Re: 2013 Panamera spurious gear change issue 2020/02/07 09:37:32 (permalink)
    DPF regeneration I should think, and completely normal. 
    The engine in your car is fitted to lots of Cars in the VW stable so i‘d spend a little time researching the issue. 
    My XC60 did the same thing - basically when it senses the DPF getting full it injects extra fuel into the exhaust and bumps the revs up a bit to burn the soot off. A bit like an Italian tune up without the noise!
    https://www.rac.co.uk/drive/advice/emissions/diesel-particulate-filters/
    JGaudoin
    PCGB Member
    • Total Posts : 4
    • Joined: 2019/10/19 18:57:35
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    JGaudoin PCGB Member
    Re: 2013 Panamera spurious gear change issue 2020/02/11 22:26:32 (permalink)
    Thanks, now you've mentioned it, I had an Audi A5 3L that went into limp mode because of the DPF. I've let Porsche Bristol know to check this and clean the DPF if needed while they have it.
     
    Cheers
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