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Porsche Questions

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My Porsche Boxster had problems when accelerating. I brought it to an independant mechanic. He said that it was the ECU. I sent the ECU for repair. He still said it did not work so I sent it a second time. When he still couldn"t fix the car (mainly because he was too busy with other cars) I sent the car to the Porsche Dealer.

He told them that it was the ECU so they started with that and told me that they had a communication problem. It was throwing a lot of codes. So the ECU had to be replaced.

After the replacement the car still did not run. Upon further testing they found out that the fuel pump needed to be replaced.

They still say that there were 2 problems the ECU and the fuel pump.

I think that it was the bad fuel pump that was causing a bunch of codes to set off.

I am wondering if a few thousand dollars was spent replacing an ECU was really necessary.

Any opinions would be appreciated.
a/c would blow hot on one side. has been not cooling but I have plenty of freon.
after 10000 oil change. using scan tool nt 500
Trying to figure out if I can replace the door or would need to repaint the entire car?
Alarm not working and back trunk jammed shut
Power roof works but once opened dosen't close all the way
After high pressure washing the fuel filler cap wouldn't open and the key got stuck. I could move the key but the engine wouldn't ignite. Also the mechanic removed the air suspension control unit because he suspects it to be faulty. Please tell me what could the problem be and how to fix it. What can I do to turn the car on?
Car will not start and oil lines need replaced
Have a "Headlight fault" message on the dash info screen. All the lights work. Why the message, and how do I clear it without sending the car to the dealer?
I have a 2012 Porsche Cayenne. I bought it last Februarys. I need to add oil every 600 miles or so. There is no leak under the car or burning any oil while driving. Can you tell me what may be wrong with it. The car has only 36K miles on it.
They all seem to function OK, I can place a call, map works, etc but there is no sound from the system. Just started after major rain storm this week
I have an 03 Cayenne S that has a light out. Come to find out the screw that pops the headlight assembly out is broken off and not able to use the tool privided by Porsche to remove it. Has this happened to anyone? If so how was it removed and what is the cost associated with it?
I have tried to remove the housing but I cannot seem to be able to get to it. How in the world do you remove the thermostat housing?
It has 97k miles and I just changed the spark plugs but it is still shaking a bit at idle. Rpms don't fluctuate. It also shakes a little at speeds over 80 mph but that could be the wheel balance?
However, when I rev the engine while in park I don't hear the thumping noise, could this be a broken belt or transmission problem.
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