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  1. Dear members, I am so happy I can CONFIRM that the main dashboard digital display is finally working (lighting up) again properly. I am writing this because there have been some issues which I need to add to help fellow members repair their display which were not previously covered. Of course I would not have managed to do this without the help of the forum and the other members who contributed before me. I believe this fix is only for the turbo models which have the 2 transformers on the backside of the tachometer, so it should be different from the S and standard cayenne. First of all, in the previous topics explaining this fix, they started with the cayenne turbo fix and ended up talking about the other models making things complicated,... this is only for the Cayenne TURBO I repeat. I have taken pictures of extra steps to be followed to make this a bit more user friendly. First of all, my main display all of a sudden stopped lighting up the LED in the middle section of the dashboard. This is where you can check the menu of the car, mileage/kilometer reading, digital speed display and other functions. I need to make a note, there are two brown transformers behind the display, one is for the lights of this main display unit and the other one I think must be for the lights lighting up the analog dials (speed, rpm, oil temp, turbo, water temp,). I say this because only the main dispay was not lighting up (but visible at night at a very weak light visibility meaning it was working but not lighting up) while the analog dials were lighting up as normal. I only changed the one transformer and it fixed the issue. I wish I had ordered another transformer to replace the other one just in case as it would have only costed me an extra US$29. I am saying this because you need 1 or 2 hours to remove the dashboard unit, and the person who did the soldering for this transformer would have done the second one for free. He actually had to do it twice, but because he soldered it on the wrong side initially as he was too tired from a long day so he had to remove it and resolder it properly. A couple of notes, after removing the air ventilation unit you have to remove a rubber cap from around the key lock. Underneath is a plastic circle which needs to be unscrewed (anticlockwise) so that it gets removed and the key lock is loose enabling the covers to be removed so that you can get to the screws behind it. This was not mentioned previously and should be noted. The next step is removing the screws behind the vent/lock surround frame, and then in the middle of the display cluster there are two more screws underneath the cluster in the middle section which should be removed so that the display cluster is finally loose. Then, there are two cables behind which come off similar to cpu's from computers, the have a hatch which needs to be pulled outwards away from the cable plastic unit and voila the cluster is free. Next, removing the dashboard display cluster and repairing it is a whole new process (new ball game) and has not been covered anywhere on the net since non-turbo users changed topic and started writing of putting in turbo displays which they found on ebay to make the dash look a bit more fancy (though the turbo gauge would be there only for show and the battery power gauge would not be there any more) So after removing the dash display unit, you have to remove 6 screws (smaller than the T20 previously used so far in the process - I think T15 or something else) and then remove the clips to remove the outer back plastic. Next you need to get hold of the bottom of the motherboard which is pretty difficult if you don't know what you are doing. To do this is easy if you do it once or have someone to tell you how to do it without damaging the unit and especially the dials. The are 3 screws on the motherboard which you need to remove. Next, which is the tricky bit, You need to turn each dial ( oil temp, speed, water temp, rpm, and turbo) ANTICLOCKWISE many times till each dial is loose and gets removed. Without doing this it is impossible to remove the motherboard without damaging the unit. Now that this is done you can untighten the plastic clips to get a hold of the motherboard. Next, there are 2 brown transformers. The one you need to change (although as I stated before you might as well change both of them at the same time) is the one with the white and orange cable close to it as this white and orange cables are the ones going towards the display unit. I gave it a chance and tried this one first because of the wire colouring and it worked. To do this, you need an experienced person with good soldering skills. Which is why I left my mechanic and took the unit to a computer repair person. What he did was the following: He heated up the bottom side of the brown transformer (not the side you see the transformer but the side you see the 6 plus 2 metal pins coming out the other end) and cleaned it and removed it. He then soldered the new brown transformer in place. I took the unit to the car (without putting the dials back on) in order to test that the lights are working and I thanked God that they were. Went back to the pc repair man and he put back the dials by moving them CLOCKWISE till the were strong back in place and at the zero mark for all dials. I will have to move the Speed and RPM dials to -3 miles per hour and some RPM down (by turning them clockwise till they get there) as these two dials will slightly move up when the engine is started. At the moment, the car when turned on showns 3 miles per hour when the digital is on 0mph. Which means when driving, the digital mph shows say 25mph while the analogue dial shows 28mph. Now regarding the links I used for the first stage, which I can't seem to find any more, you can view the stripping process by opening this PDF from this location: http://www.soloporsc...rbo_Cluster.pdf At the top it says click here to view the original topic but the link is dead. Moreover, here is a picture of the lock and the plastic bits that have to be removed. I can confirm that this solution worked for me and saved me a lot of money from going to Porsche who would have sold me a unit for 1500 pounds plus labour, or going to someone else who said he would repair it for me for 500 pounds (about 470 pounds in his pocket for a couple of hours or less since the transformers cost US$52 including the DHL 3 day delivery from China (ordered it on the Friday 17th August and got it today (bearing in mind the weekend in between) As for the transformer, I bought it from the following (highlighted in red) who were previously recommended in your other posts and paid by paypal: hello Transformer for TOUAREG, PORSCHE and BENTLEY instrument Cluster Illumination Repair price: 29usd shipping to UK: 23USD BY DHL TOTAL: 52USD you can by paypal our paypal address: lily@keyecu.com or make order in our web, and make online payment via paypal emily best regards www.keyecu.com msn: info@keyecu.com email: info@keyecu.com skype: keyecu I hope this post will help someone save money on repairing their TURBO dash display. Keep up the good work fellow members.
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