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Old 11-27-2025, 03:19 AM   #6
PigMi
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Join Date: Nov 2025
Location: Tarcento Italy
Posts: 6
Quote:
Originally Posted by Smallblock454 View Post
You can't deactivate the immobilizer in a Porsche DME 7.8 via software. If you try, you'll brick the DME. This Porsche system is proprietary.

From my experience in general the M534 doensn't break without an event. It can break while connecting the starter battery while ignition is on and some other events like this.

But when the M534 breaks, the DME doesn't allow the starter to crank and ignition and fuel injection is turned off. So i suspect you have a problem related to the DME or the wiring harness / sensors.
Thank you for this, I will keep searching for the problem. It is strange as the engine cranks, but the fuel pump doesnt run and there is no spark.
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