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ENGINE ELECTRICAL SYSTEM - TECHNICAL DATA - 540i (E39)
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Regulator
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12 32 Regulator E39
12 32 Regulator E39
REGULATOR SPECIFICATION
Regulated voltage at 1500 RPM engine speed / no electrical devices on (at 30 °C to 60 °C at regulator)
V
13.5. . . 14.1
Constant voltage regulator (only for vehicles with battery in trunk or underneath rear seat)
V
14.3 +/- 0.1