Quote:
Originally Posted by Davelaz23
Ok all figured out. Convenience starting feature is only on 8 cyl models with automatic transmission. It appears in the manuals for both the e53 v8, and e39 540iA manuals. Specifically notes for automatic transmissions only, which is why it’s not on my M5.
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I knew this feature on other V8 models was on automatic version only (no separate start relay on manual models). On wiring diagrams M5 (MSS52) has a separate start activation relay (same one which controls automatic start) but the function seems to be just to prevent starter activation if clutch pedal is not depressed.