Won't start with FOB or key - Nissan Murano Forum
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post #1 of 7 Old 06-19-2019, 10:56 AM Thread Starter
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Won't start with FOB or key

So, my friend owns a 2006 Murano. The key FOB won't do anything, won't unlock the doors. Car says 'key not recognised'.
Which sounds it's probably a dead FOB or FOB battery.
Except the real key won't start the car either. It doesn't do anything. No start, no crank, nothing.
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post #2 of 7 Old 06-19-2019, 12:01 PM
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Check car battery.
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post #3 of 7 Old 06-19-2019, 12:19 PM Thread Starter
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Everything else is working fine, I believe the battery is new.
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post #4 of 7 Old 06-19-2019, 01:15 PM Thread Starter
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Edit: the battery, alternator and body ground are all new as of march
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post #5 of 7 Old 06-19-2019, 06:09 PM
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If you have a multi-meter, I'd start by checking the battery voltage at rest. A healthy charged battery should read 12.5 to 12.8V.
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post #6 of 7 Old 06-21-2019, 07:25 PM Thread Starter
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So, after charging the problem appeared to be the starter. Replaced the starter, charged it. Car started.
After a few minutes i removed the jump cables and it died within 2 minutes and the alternator started smoking a bit.
I found that on of the connectors on the alternator had been cut and spliced back together. These wires were touching and slightly melted where they'd been touching.
I seperated them, recharged and restarted the car. It was again fine until i disconnected the jumper cables. Again, it quickly died and started smoking again. This lead me to believe that it was a grounding problem and that it may be ok as long as the ground jump leads were connected. Started charging again and the alternator caught fire. So at this point a problem internal to the alternator, maybe. Kinda stuck at this point.
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post #7 of 7 Old 06-21-2019, 07:57 PM
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If you're not familiar with the electrical and charging system of the Murano, I'd suggestion getting the vehicle towed to a repair shop to have it looked at. Alternator catching fire sounds serious. I would do that before it causes any more damages to the Murano, especially to the electrical system which is quite sensitive. Just my 2 humble cents.
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