INFINITI Q45 WONT START! NEED HELP ASAP PLEASE

[nissancima_life]

HELLO
OK SO LATELY MY Q45 DOESNT WANT TO START, HERES WHATS HAPPENING, WHILE DRIVING AIR CONDITIONING DIGITAL GAUGE STARTS TO FADE, HEAD UNIT GOES OUT AND THAN THE CAR STARTS TO FLUTTER AND THAN STALLS, WHEN I TRY TO RESTART CAR CLICKS BUT DOESNT TURN OVER, INTERIOR LIGHTS ARE GOOD, CLUSTER LIGHTS ARE GOOD NO CHECK ENGINES NOTHING. TOOK THE CAR TO THE DEALER THEY CHECKED THE COMPUTER AND SAID IT WAS THE CHIP IN THE KEYS AND NEEDED TO REPROGRAM.... CAR STARTS LEAVING THE DEALERSHIP CALLED DOES THE SAME THING NOW WONT START! ANY SUGGESTIONS, POSSIBLE SOLUTIONS?! PLEASE IF THE DEALER CANT FIGURE IT OUT HOPEFULLY SOMEONE CAN OR HAS HAD THE SAME PROBLEMS THANKS

[Q451990]

Sounds like an electrical voltage problem like a failing alternator or battery to me, but that's a guess... the dealership should have been able to diagnose that. Does the parking brake light or ABS light (they double as alternator fault warning lights) come on at the same time?

Heath

[paranoidjack]

Doesn't sound like a key chip to me...that's questionable that they'd come to that conclusion.

I would side with Heath and say it's definitely an electrical problem. Did they actually replace the key and chip and reset to ignition or just say that was the issue?

Have you tried jumpstarting it?

[OwnerCS]

Here's a personal experience along with suggestions from Heath and Jack. My 1999 Infiniti I30 was plagued with strange electrical issues that could not be diagnosed to any one particular area. Also, the car's computer eventually failed before I purchased the car.

As soon as I bought the car, I replaced the battery as it was failing. While replacing the battery, Advance Auto tested the car's electrical system and found a bad alternator. Another similar case happened with my son's 99 Maxima when the stereo head unit would stop working.

I've seen situations with Nissan cars in the 95 to 99 year range where a combination of failing alternator and battery can appear as other hard to diagnose electrical issues with car's head unit and computer (NATS immobilization). I would get the car's battery and alternator checked to rule out any battery/alternator issues as first step.

[nissancima_life]

Sounds like an electrical voltage problem like a failing alternator or battery to me, but that's a guess... the dealership should have been able to diagnose that. Does the parking brake light or ABS light (they double as alternator fault warning lights) come on at the same time?

Heath

yeah i was thinking the same thing, replaced the battery still nothing, alternator however is something when i was at the dealership they said my alternator was making a noise but it was good, yeah i would think the dealership would have been able to figure out the problem but all they did was plug into my computer and read the codes and all they did was reset my keys. No lights come on abs or parking break

[nissancima_life]

Doesn't sound like a key chip to me...that's questionable that they'd come to that conclusion.

I would side with Heath and say it's definitely an electrical problem. Did they actually replace the key and chip and reset to ignition or just say that was the issue?

Have you tried jumpstarting it?

its a brand new battery literally went to the store bought a brand new battery (charged) and put it in still no go. yeah im shocked the dealer couldnt figure out the issue they told me they reset the chip because my car went into fail safe mode but driving home from the dealer i stalled a block from my house, waited about 10 min car started again rushed home and it stalled in my drive way. I honestly think its my alternator but reading more into it could be the starter solenoid?

[nissancima_life]

Here's a personal experience along with suggestions from Heath and Jack. My 1999 Infiniti I30 was plagued with strange electrical issues that could not be diagnosed to any one particular area. Also, the car's computer eventually failed before I purchased the car.

As soon as I bought the car, I replaced the battery as it was failing. While replacing the battery, Advance Auto tested the car's electrical system and found a bad alternator. Another similar case happened with my son's 99 Maxima when the stereo head unit would stop working.

I've seen situations with Nissan cars in the 95 to 99 year range where a combination of failing alternator and battery can appear as other hard to diagnose electrical issues with car's head unit and computer (NATS immobilization). I would get the car's battery and alternator checked to rule out any battery/alternator issues as first step.

battery is brand new 1 day old, the alternator is the next suspect, they told me it was making a winding noise but it was good, now if the dealer is telling me it is good?! but im gonna go ahead and just change it see if that helps, thanks all for the imput and help hopefully it is just the alternator

[MR. Q]

Maybe the belt for the alternator isn't tight enough, or dirty battery posts. The mass air flow sensor located with the air intake can be the issue too.