Porsche Forum And Luxury Car Resource
For what its worth, I wanted to chime in to write down, what I observed during troubleshooting of PCM issues on my CTT. The issues started slowly, but over time they accelerated until the point where PCM was not working at all. When driving it would start resetting and I eventually disconnected to ahead of troubleshooting. Tried many different things, including taking the PCM apart to debug the boards. Nothing was found out of the ordinary there. To make a very long story short, I started looking at the antenna and satellite connections at the back of the PCM. I noticed that the plastic on the ends which plug into the PCM, were wearing out and started flaking off. One of the connectors was worn down to the point where it was obvious to me, that it would not hold in place when attached. Once I made the connections secure, started the car.
When I did that, noticed that the PCM is no longer resetting, and is working perfectly. My fix is attributed to bad/work plastic connections for antenna and sat. They interfere with the programming of PCM and radio/sat functions, causing the FW to crash due to intermittent connections. I tested it once and crashing started to re appear when I had connections just sitting attached witout zip ties. Then once I put zip ties back in, reset fuses again, crashing stopped. So if you are experiencing these issues, I would urge you to inspect and replace the sat/radio antenna connections. Worked for me 100%. Hope this can help others here. Im experiencing the same issues. How did you access the antenna connections that you connected with zip ties? I tried just pulling the PCM fuse (only one fuse on my 2014) for a few seconds to see if that would resolve the issue but it didnt.
Willing to try what has worked for others before replacing the entire unit out of pocket. Had to pull the pcm out. Then zip tied to mske sure connections are solid, then pulled the fuses. After that, no more resets. I think the firmware queries pcm for signal and if it disappears firmware gets hung and pcm reboots. I would try to find out if there is a reset sequence for your PCM. Looks like the processor somehow lit up all the segments of the panel and keeps them on. In my Cayenne, i can press the numbers 1, 3, 8 simultaneously, resulting in a PCM reset. Not sure what that sequence is for yours, but would be good to find out (call dealer??), so you can reset PCM and see if the display is fixed. If you do not know the sequence, another trick is to remove battery cable (unscrew the neg teminal and remove from battery for about 20 minutes). Then, put terminal back in and see if the PCM reset itself.
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Same passion, different car. Still happy for you. 1. High Km car, you will want to buy a warranty, NOT cheap. 2. I was told that if you are going to seriously track the car, you do not want CF brakes, very expensive to replace. Other than the above, car is brilliant! I took my previous Porsche magazine editor for a ride on Sunday. He was very impressed with the duality of the vehicle in both comfort and track setting. This is the cost for camber plates / offset ball joints / something needed to get sufficient camber? Visit Nate Tempest's homepage! This is the cost for camber plates / offset ball joints / something needed to get sufficient camber? Whatever they did, assuming some or all of the above transformed the car. Whatever they did, assuming some or all of the above transformed the car. Marketplace Parts Marketplace Vehicle Marketplace Vendor Announcements Rennnlist Help and Announcement Forums Rennlist Forum Glitches - post them here. Test posts are permitted.