ISTA (Integrated Service Technical Application) is the primary software used by BMW dealerships worldwide. It works by creating a digital map of the vehicle's electrical architecture. When a technician connects a diagnostic head—like the ICOM (Integrated Communication Optical Module)—ISTA performs a vehicle test, identifying every module and its current status. It provides guided troubleshooting, where the software literally walks the user through a test plan based on the specific faults found.
End of paper.