Central warning system erratic due to electrical interference on Porsche 928

Problem Description and Possible Solution
Due to electrical interference from cell phones and secondary ignition faults, the vehicle's central warning system display can be erratic.
Problem Data
RepairPal Verified
Average mileage: (–)
5 model years affected: 1990, 1991, 1993, 1994, more1995
5 people reported this problem
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