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PCM instalation

emil77
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emil77 Member

emil77

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Hi

I replaced oem CD receiver by PCM head unit. Radio and CD changer is working properly, but PCM buttons do not work and after 3-5 sec error message appears on monitor ( no navigation, amplifier detected). Could you tell me how this message can be removed.

Thank you all in advance.

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alsamrob Member

alsamrob

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Hi

I replaced oem CD receiver by PCM head unit. Radio and CD changer is working properly, but PCM buttons do not work and after 3-5 sec error message appears on monitor ( no navigation, amplifier detected). Could you tell me how this message can be removed.

Thank you all in advance.

When you did the install, did you install the DVD nav unit as well, or just the head unit? Which unit, the PCM 2.1? I am thinking about doing the same thing, as I do not need Nav, and don't want to go through the hassle of retrofitting everything. Any info you have would be appreciated, pics, instructions, etc.

My guess is that you need to go to your dealer and have him program the PCM to let it know there is no Nav unit.

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emil77 Member

emil77

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Hi

I replaced oem CD receiver by PCM head unit. Radio and CD changer is working properly, but PCM buttons do not work and after 3-5 sec error message appears on monitor ( no navigation, amplifier detected). Could you tell me how this message can be removed.

Thank you all in advance.

When you did the install, did you install the DVD nav unit as well, or just the head unit? Which unit, the PCM 2.1? I am thinking about doing the same thing, as I do not need Nav, and don't want to go through the hassle of retrofitting everything. Any info you have would be appreciated, pics, instructions, etc.

My guess is that you need to go to your dealer and have him program the PCM to let it know there is no Nav unit.

Yes I only installed a head unit PCM without nav module. Don't you know how to program PCM? My dealer a far from my place. Is there any other way of PCM activation than visiting the dealer.

Emil

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emil77 Member

emil77

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Is there any other way of PCM activation than visiting the dealer.
Only if you can find a shop with a PIWIS tester.

thanks Loren.

If I will not be able to find shop with PIWIS, may I post PCM unit for reprogramming. Could you advise me anyone.

Emil

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alsamrob Member

alsamrob

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You can only program your PCM (and any other MOST network components) with a PIWIS tester.

So it is possible to swap out the CDR23 HU with a PCM2.1 monitor and not install the nav part? Merely need to have the dealer reprogram the PCM? Is the swap out plug N play in the back?

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emil77 Member

emil77

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You can only program your PCM (and any other MOST network components) with a PIWIS tester.

So it is possible to swap out the CDR23 HU with a PCM2.1 monitor and not install the nav part? Merely need to have the dealer reprogram the PCM? Is the swap out plug N play in the back?

yes, connectors on the back side are same as in CDR.

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berty987 Member

berty987

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As far as I'm aware the only people to successfully retro fit a PCM in any car have been those with dealer support , when fitting a new unit sourced from Porsche. The PCM has built in theft security that links the unit with the car via the gateway module. If you fit a PCM from another car into your car , I would expect you need to re activate the PCM using the keypass procedure and the porsche workshop tool. The code for unlocking the PCM and re assigning it to a different vehicle , is obtained by your local agent on request from Porsche , having provided the unit and the vehicle ident numbers to them. The PCM communicates with the Navigation drive via MOST fibre optic, you will also need this to retro fit the pcm , as the car will not have it installed as part of the standard loom.

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emil77 Member

emil77

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You can only program your PCM (and any other MOST network components) with a PIWIS tester.

Hi Loren

Can I program(code) PCM by using PST2. If yes, then how?

I bought used PCM therefore dealer refused to program this device! (unbelievable :angry: )

Therefore I plan to find PST2 and try to reprogram PCM.

regards

Emil

post-25912-1197805385_thumb.jpg

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emil77 Member

emil77

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No, a PST2 will not work on a 2008 Cayenne - only a PIWIS tester.

In the US a PIWIS tester is $18,000 (for the first year of the lease).

Does it means that my PCM will never work and the only chance is to purchase a PIWIS?

The other problem is that buttons on PCM are inactive. Is it malfunction or this is also the matter of coding?

regards

Emil

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g_a Member

g_a

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One more time - You need to find a shop or Porsche dealer(OPC) with a PIWIS and ask them to program it for you.

Dear Loren! probably PCM retrofit manual will help Ermil 77, at least fix trouble with buttons? Do you have this info on your site?

Alex.

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Loren Member

Loren

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One more time - You need to find a shop or Porsche dealer(OPC) with a PIWIS and ask them to program it for you.

Dear Loren! probably PCM retrofit manual will help Ermil 77, at least fix trouble with buttons? Do you have this info on your site?

Alex.

The PCM retrofit installation instructions are in a TSB - and they are available here to Contributing Members.
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emil77 Member

emil77

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One more time - You need to find a shop or Porsche dealer(OPC) with a PIWIS and ask them to program it for you.

Dear Loren! probably PCM retrofit manual will help Ermil 77, at least fix trouble with buttons? Do you have this info on your site?

Alex.

The PCM retrofit installation instructions are in a TSB - and they are available here to Contributing Members.

Hi

I looked through the TSB on PCM installation. I found there a lot of useful information. According to TSB I connected A8 and C14 sockets on PCM connector. Now all buttons are working.

Thanks Alex and Loren!

:renntech:

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