Really bad experience here. Bought CarPlay add on for Porsche pcm3.1 for a client. (I am an installer) Install was simple enough and pretty much impossible to get wrong it seemed. Device has seperate power requirement labelled 12v ACC So I connected it via the supplied fuse to an ACC(ignition switched) supply in the fuse box.Following the install the device worked perfectly for approx 1/2 hour until I switched off the ignition. The ACC was therefore switched off but the pcm keeps working as it does in most modern cars for a period of time. However within seconds the pcm blew up with a smell of burning as its power supply was unable to supply the full load required. All I got from support was continual demands for photos of the install and zero response to my questions about the power issue even after I was given the email address of their top tech guy. pcm repair cost £1200 and due to zero response I was not happy to refit the unit even if I moved the ACC to the delayed ACC to match the pcm supply. Therefore I purchased a replacement unit elsewhere. As an installer to be £1600 out of pocket is not funny! I told them that I was not after a refund I just wanted some answers but got a stone wall!
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