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I'd check if it requires having the engine on and if it requires having the car idle before moving again.
As for the person with an issue with coasting in neutra, here's an approximate hierarchy of methods, from best to worst from the ecodriving guide.
1) coasting in neutral, engine off (ie. roll to a stop);
2) coasting in neutral, engine idling;
3) regenerative coasting (hybrid vehicles)
4) regenerative braking (hybrid vehicles)
5) coasting in "deceleration fuel cut-off" mode (in gear, above a certain engine RPM)
6) conventional friction braking (non-hybrid or hybrid)
My car will coast down to 700 RPM or roughly 15 MPH in 5th gear according to my oxygen sensor (stays lean until about then so the oxygen sensor may just be cold,) YMMV.
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