BMW F-Series/E-Series Integrated Power Supply Module 12637591534 Reliable Power Management Replacement Part

BMW 3 Series (F30/F31), 5 Series (F10/F11), X3 (F25) and E-Series and other models can choose integrated power module OEM 12637591534. This module sits in engine bay or near battery; manages power distribution, stabilizes voltage, and controls start/stop system to ensure stable electrical supply. Installation difficulty: medium; labor 1–1.5 hours; disconnect battery and carefully remove wiring harness connectors. Common faults include dashboard “low battery discharge abnormal,” starting delays, intermittent window or lights, or start-stop system issues.