G37 Sedan

No start no crank, neutral safety switch

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Old Aug 23, 2024 | 02:44 PM
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No start no crank, neutral safety switch

I have a g37x and 2010 and I have a no crank no start . I replaced the whole shifter assembly with a used part that seems to be in good working condition , replaced the battery and am now looking at replacing the neutral safety switch I purchased new from orielleys but I can't for the life of me find the location of this thing. Any help would be very much appreciated!
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Old Aug 23, 2024 | 04:18 PM
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The switch, if that is the issue, is located on the passenger-side of the gearbox (transmission).

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Old Aug 24, 2024 | 12:26 PM
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Thank you! I realize I didn't specify that this is an automatic transmission . Is this the schematic for a manual transmission ?
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Old Aug 24, 2024 | 01:30 PM
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If you have a automatic transmission then that switch you pictured is NOT for your car AT ALL.

On automatics, the PNS (Park/ Neutral Safety) switch is incorporated into the shifter assembly in the center console (which apparently you replaced).

What exactly are your symptoms and why did you replace the shifter assembly? Did you ensure the install went correctly? Everything aligned- including the shift rod under the car?
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Old Aug 24, 2024 | 02:33 PM
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I see . Yes, I did replace that whole assembly and was able to get it installed correctly . I initially replaced it because I thought the symptoms matched tha of a bad pns switch.The symptoms are I get power , the key is good , and hit the start button and nothing happens . No noise from the starter at all . Battery is brand new as well . I'm guessing I may need to look at the starter relay next but I was guessing the neutral switch because the last time it did start was after I moved the car into neutral and back to park , with the original shifter assembly but never got it to start again after that one time even moving the shifter from park t neutral and back .
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Old Aug 24, 2024 | 04:58 PM
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The odds that both shifter assemblies exhibit the same symptoms are astronomical. There has to be a separate issue going on.

- Did you ensure that the shifter rod under the car is connected/ adjusted correctly? This rod has to be set correctly or the car will not think it is "parked."
- Does the car start in "NEUTRAL?"
- Any messages on the gauge cluster?

I suggest you download the TM (Transmission) section of the factory manual for your car as that will have instructions on how to make sure the control rod is properly adjusted.

Last edited by ILM-NC G37S; Aug 24, 2024 at 05:13 PM.
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Old Aug 28, 2024 | 12:31 AM
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Yes, I have tried to start the car in neutral with no success . No warning messages on the dash that would indicate the vehicle isn't recognizing the gear/ position it is in . I also checked to make sure as a way of diagnostics that the reverse lights are coming on ,( they are ) which I've read can be a symptom of a bad pns switch. The kicker to this whole thing.is that I have an interlock system and I am very skeptical it could be a bad connection somewhere in the install but they don't want to play ball in doing their own diag on their system so I am seeming to be stuck with doing my own diagnostics at this time .
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Old Aug 28, 2024 | 10:35 AM
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Originally Posted by g37xdgo;[url=tel:4334502
4334502]...I have an interlock system and I am very skeptical it could be a bad connection somewhere in the install...
You might have mentioned this in the first place. Based on that fact I'm willing to bet the car is fine and that whatever gizmo you installed is causing your issue.

Why not remove the gadget and see if the car returns to normal?
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Old May 31, 2025 | 06:32 PM
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Originally Posted by g37xdgo
Yes, I have tried to start the car in neutral with no success . No warning messages on the dash that would indicate the vehicle isn't recognizing the gear/ position it is in . I also checked to make sure as a way of diagnostics that the reverse lights are coming on ,( they are ) which I've read can be a symptom of a bad pns switch. The kicker to this whole thing.is that I have an interlock system and I am very skeptical it could be a bad connection somewhere in the install but they don't want to play ball in doing their own diag on their system so I am seeming to be stuck with doing my own diagnostics at this time .
hey. You fixed it? What was the issue? Got the same issue here.
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Old Jun 13, 2025 | 02:20 PM
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I have this same problem and also looking for a fix. No P or N indicated on the dash. Only Drive and Reverse
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Old Jun 13, 2025 | 02:35 PM
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Originally Posted by Metal-Mechanic
I have this same problem and also looking for a fix. No P or N indicated on the dash. Only Drive and Reverse
i think the transmission range sensor. Not sure.
i have an appointment with mechanic this Monday and i will let you know. By the way i after a while Drive and Reverse is gone. By chance if the car starts its in limp mode.
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Old Jun 22, 2025 | 09:28 PM
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Originally Posted by Shone
i think the transmission range sensor. Not sure.
i have an appointment with mechanic this Monday and i will let you know. By the way i after a while Drive and Reverse is gone. By chance if the car starts its in limp mode.
Any update? I'm having a similar no crank scenario where all my other electronics seems to work as expected. I'm leaning towards BCM issues, but am looking for any possible solutions that don't require paying to have my keys reprogrammed.
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Old Jun 23, 2025 | 12:13 AM
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Any updates? Still not fixed

Originally Posted by Shone
i think the transmission range sensor. Not sure.
i have an appointment with mechanic this Monday and i will let you know. By the way i after a while Drive and Reverse is gone. By chance if the car starts its in limp mode.
Any updates?
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Old Jun 23, 2025 | 07:11 PM
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Originally Posted by Metal-Mechanic
Any updates?
First shop said bring it to the dealership, cause they couldn’t scan the engine or transmission codes. Right now at the dealership. No updates yet.
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Old Jun 24, 2025 | 02:35 PM
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Originally Posted by Metal-Mechanic
Any updates?
Transmission has internal short in Valve body and connector cracked, recommend to replace both. Quoted me 7k CAD.
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