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onboard computer not working

Boxsterboy3
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Boxsterboy3 Member

Boxsterboy3

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I replaced my gauge cluster due to an oil level failure and now I dont have the onboard conpouter functions.  Durametrics indicates gauge cluster has onboard computer activated, but it does not function.  If I install old cluster, computer works fine.  Any ideas?

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JFP in PA Member

JFP in PA

Posted
  • Moderators
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I replaced my gauge cluster due to an oil level failure and now I dont have the onboard conpouter functions.  Durametrics indicates gauge cluster has onboard computer activated, but it does not function.  If I install old cluster, computer works fine.  Any ideas?

 

Welcome to RennTech :welcome:

 

Is the replacement cluster a new one or out of another car?

KevinH90 Member

KevinH90

Posted
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Is it possible that the bulb behind the OBC display is burned out or not seated properly?

 

What is the model year of your Boxster? 

Boxsterboy3 Member

Boxsterboy3

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Lights are fine.  It displays the trip odometer fine.  Stalk cancels miles fine.  Can not cycle through temp, MPG, miles to empty, etc.  Just remains with trip odemeter reading.  Also, this is a 2001, so it has LED's-no chance of a loose bulb.  Does the face that this new gauge cluster has a different identification number have any effect?

KevinH90 Member

KevinH90

Posted
Posted

I have attached a pdf with all of the information I have on programming the Boxster cluster.  Unfortunately, I am less familiar with the LED-style cluster so I don't know the answer to your question.

 

When programming the cluster in my car, I did swap in the VIN from the old cluster and I didn't have a problem with the OBC.  Since your new cluster has the VIN from the donor car, it is possible that it is causing a problem when the DME sends data  to the cluster. 

 

I am not absolutely certain that is your problem.  It seems like the wiring is OK since the OBC worked with the old cluster.  If you know someone who is handy with an EPROM programmer, you could swap the VIN and be sure.

 

I have not disassembled an LED cluster.  Is it possible to swap the circuit board from your old cluster or is the broken oil-level display attached to the board?

Working with the EPROM on Porsche Boxster - illustrated - old and new style clusters - minimum.pdf

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Loren Member

Loren

Posted
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Posted

Every cluster needs to be programmed to the car.

You will need a PST2 or PIWIS to do this.

 

OBC will need to be turned on in the cluster as well as model type settings, etc.

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