27 Extras Miles

[500]

My car's odo shows 9403 miles and the trip computer's travel data function shows total miles driven as 9430.6 along with 399:47 total hours & mins of operation etc...I wonder why there is a 27 mile difference? I was there when my car came off the truck and saw it only had 3 miles on it. Perhaps the miles were Porsche road testing and they cleared the odo but not the trip computer?

If you have a minute check it on your own cars and see what you guys get.

Thanks.

[White987S]

I bet this related to our cars speedo usually showing 2-3 MPH faster too.

[500]

I just spoke with one of the techs at the local P car delaership and he said Porsche (and all makes) are allowed to rest the odo up to 100 miles after they have done testing at the factory...he thinks that maybe during one of the tests, maybe the rattle test, something was heard and the car was driven back to the factory to get corrected then back over the bumps/rattle testing area until they got it right which would account for the extra miles...then they reset the odo but forgot to reset the travel function. He also said he's seen new cars come of the truck with the trip odo showing more miles than the main odo...

I'd be curious to see if anyones else's car had different #'s.

Here's how to check:

1) With ign on press the trip button on pcm

2) Go to travel data and press continuous (continuous may already be selected)

3) Compare the travel data continuous # to your odo.

Thanks.

[Tool Pants]

Does the distance displayed in the PCM come from satellites?

[RFM]

T.P There was an item in the previous PIWIS software PCM-Navi. coding" tyre dimensions" I think it's gone now, my guess is that the standard tyre dimension be valid for the PCM distance counter. I will take a look later on this week if the "tyre dimensions" still exist.

[500]

Does the distance displayed in the PCM come from satellites?

I don't have navi...

[500]

T.P There was an item in the previous PIWIS software PCM-Navi. coding" tyre dimensions" I think it's gone now, my guess is that the standard tyre dimension be valid for the PCM distance counter. I will take a look later on this week if the "tyre dimensions" still exist.

Thanks loooking forward to a plausible explanation :)

[RFM]

Looked today on a 08 997 GT2 - no tyre dimensions in the coding, on Cayenne 06 still tyre dimensions in the coding. It looks a question for the Harmann-Becker boys.

[500]

Looked today on a 08 997 GT2 - no tyre dimensions in the coding, on Cayenne 06 still tyre dimensions in the coding. It looks a question for the Harmann-Becker boys.

Thanks RFM can't wait to hear what they say.

[RFM]

Did a check on a 2008 Cayenne today: no longer tyre dimensions in the menu. Looks like the last generation have no compensation anymore.

[500]

Did a check on a 2008 Cayenne today: no longer tyre dimensions in the menu. Looks like the last generation have no compensation anymore.

Thanks..so then what is causing the discrepency (27 miles) between my total miles accumulated vs. the odometer?