Can I Stop Engine in neutral at 60mph and then restart?

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
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antzrus
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Sometimes my navhack locks up when I want to return to the nav function. I find the only way to get it back is to cut all the power off, kill the engine and then reboot the machine. Is this OK at speed to put it in neutral, klil the power, and restart or will I damage something when I put it back into drive at speed after the engine is restarted?


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svard75
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Interesting. I had no idea you could turn the car back on while the shifter is in N not P. I would think popping it into P would muck up the transmission completely. I have an idea. Install a Power override switch for the nav system.

bejjutsu
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antzrus wrote: ...klil the power, and restart...
Klil the power?? what is that, Klingon??

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antzrus
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bejjutsu wrote:
antzrus wrote: ...klil the power, and restart...
Klil the power?? what is that, Klingon??

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How'd you know?

I don't know. Can you start the car in neutral? If you can't then my whole question above is moot. :facepalm:

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svard75
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Hey anty. I tried it out but it's not going to do what you're looking for. First of all turning the car off while driving is scary because bye bye power steering. Secondly in n the car won't fully turn off it remains in ACC. Guess what power still goes to radio and nav. I was able to restart the car in n poped it into d and continued driving.

What I meant was I stall a kill switch. Find the main positive line to the nav. Or you could enter the diagnostic mode. I noticed that essentially reboots the whole system.

U jokers!

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AZhitman
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Turning the car off means no P/S and no ATF circulation. It also won't start without actuating the brake.

msvara is right - Unless you want to be a colossal hazard to the rest of the people on the road, fix your hack. :)

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antzrus
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Whoa! Thanx for the input guys. Nix my great idea... Diagnostic mode huh..? Geeez, I very rarely use the hack anyway for adding a new address on the fly. It was just a thought. Thanx again.

The00Dustin
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AZhitman wrote:Turning the car off means no P/S and no ATF circulation. It also won't start without actuating the brake.

msvara is right - Unless you want to be a colossal hazard to the rest of the people on the road, fix your hack. :)
While you do lose P/S, that probably isn't a big deal for a guy like Antz, who remembers when nobody needed it (kinda like electric starters on motorcycles). Regarding losing ATF circulation, I can't imagine that this matters for the few seconds the engine is off (it'd be no different than if the engine stalled even if you had to stop afterwards). Those comments having been made, it WILL start without the brake when you are rolling in neutral (IIRC, it doesn't even have to be at a very high speed). My 2006 M45 will, anyway. Moreover, I'd say someone with plenty of experience doing something like this is far less dangerous than a lot of people on the road every day (because it's far too easy to get a license and beyond that, far too many people are talking/texting on their cell phones or otherwise distracted). I have done this a number of times (throw the car in neutral press the button 3 times fast or hold it for a few seconds) when the ICC has messed up (specifically, because once it says dirty sensor, you can't use standard cruise without turning the car off and back on, and that is an Infiniti problem I can't fix). This does reboot the ICC, and I think it might actually reboot the Nav/Radio, too, because even though the radio keeps power in ACC, I'm pretty sure they reset when the starter runs in this case. That is to say, IIRC, the starter draws enough juice to cut accessory power in this scenario. Sometimes it works great, other times I have still to pull over and stop and restart the car because it does something else that irritates me afterwards (I don't remember what, maybe it stops using the torque converter or runs in a lower gear, it's something strange, but not too alarming). On that note, personally, I'd say it's worth a shot. One word of warning, though, it won't start immediately after it shuts off; you have to coast for a few seconds (maybe 3-5, but maybe not quite that much, again, I don't remember, but if you hit the start button and nothing happens, don't panic or get goofy, just wait a few seconds and hit it again. Finally, while I think Antz is well aware of this, I'm going to say it for the benefit of the random lurker: Obviously, it's important to remember that you're liable for your own actions, and this could potentially be dangerous, so be cool-headed and prepared (to turn on hazards and stop with no power steering [and possibly no power brakes]) if you're going to try it. Also, it would probably be best to try it once where there isn't other traffic before doing it to fix an issue in other traffic, and highly recommend waiting until you're in a position to pull over if necessary before trying it every time.

Regarding diagnostic mode, that might be a better idea for this particular scenario (just wanting to reset nav/radio), although it technically requires more distraction, so ymmv.

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svard75
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Everyone here made some great points. Yesterday's endeavour was a bit scary but I was driving on a small private road after 1030 pm without anyone around. As was mentioned earlier the car did turn off but when turning on I had to wait several seconds and apply a bit of brake. I recall pushing the start button a few times to actually turn the engine off. I'm not exactly sure when it turned off I just felt the steering go firm and the dials go black with just the ring illumination. I think I was traveling around 20 mph at that moment. I kept trying to push the start button again to change from ACC to off but it wouldn't go.

Once the car started I let it coast for a good 3-4 seconds then put it back into drive. No noises or harsh shifts were felt. No lights came on during this exercise either.

I don't have nav nor the hack because I don't drive nearly enough to watch anything so no point.

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antzrus
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Whoa! Thanx so much for your further experimentation and comprehensive write ups. Really!!

I offer you guys a big:

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KISS...

M35xTO
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Hey antzrus, the system actually does a full restart when you enter and leave the diagnostics mode, so you could try that to get your nag to work while driving. I think you have to turn off the audio, hold settings and spin the volume knob in one direction. Those instructions might be a little off, but I'm sure it does a full restart when you press the back button to exit diagnostic mode (Infiniti logo and all).

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antzrus
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M35xTO wrote:Hey antzrus, the system actually does a full restart when you enter and leave the diagnostics mode, so you could try that to get your nag to work while driving. I think you have to turn off the audio, hold settings and spin the volume knob in one direction. Those instructions might be a little off, but I'm sure it does a full restart when you press the back button to exit diagnostic mode (Infiniti logo and all).
Whoa! Ditto w/the big KISS!!

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The Bodyguard
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Interesting post here... I had a problem with my g35s sedan (auto) where it would stall out on it's own as rpm would occasionally jump up and down when approaching a stop or turning a corner so I quickly put it in neutral and lightly tap the brake pedal and push the start button to crank it back on and I'm back rolling... Scary feeling but since replacing my battery just a week ago that problem has gone away!!! :dblthumb:

But, to answer your question about "can" it be done?? Yes, it can!! :bigthumb: but it's not entirely safe to do!!!

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antzrus
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Location: Wenatchee, Washington USA

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The Bodyguard wrote:Interesting post here... I had a problem with my g35s sedan (auto) where it would stall out on it's own as rpm would occasionally jump up and down when approaching a stop or turning a corner so I quickly put it in neutral and lightly tap the brake pedal and push the start button to crank it back on and I'm back rolling... Scary feeling but since replacing my battery just a week ago that problem has gone away!!! :dblthumb:

But, to answer your question about "can" it be done?? Yes, it can!! :bigthumb: but it's not entirely safe to do!!!
Rarely do it. :eek:


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