2015 Q50 won't start - clicks once but no cranking

In 2014, the G37 Sedan became Infiniti Q50. G37 Coupe and Convertible became Infiniti Q60 under Infiniti's new naming structure - Here's the place to discuss the Q50 and Q60!
molonlabe
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2015 Q50 won't start - clicks once but no cranking

Postby molonlabe » Tue Jan 28, 2020 7:01 am

I replaced the ECU and BCM, key is recognized by the car, but it just won't start. It started before just fine, but a few days ago, it simply won't crank. It sees the key, press the start button, it clicks ONCE then nothing.

Can it be the starter? Did I flood it? Something else?


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Re: 2015 Q50 won't start - clicks once but no cranking

Postby audtatious » Thu Feb 06, 2020 3:48 pm

If it's not complaining about security then make sure the battery has enough juice for the starter

molonlabe
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Re: 2015 Q50 won't start - clicks once but no cranking

Postby molonlabe » Thu Feb 06, 2020 10:35 pm

yes, battery is fine. i have another q50, same year, and i swapped the batteries, so the battery is def not the issue.

near as i can tell, the starter must have gotten 'frozen' or stuck from either rust or lack of lubrication.. i tried tapping it a bit, but still nothing. next step, i guess i'll remove it and see if i can unstick it.

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Re: 2015 Q50 won't start - clicks once but no cranking

Postby Kompresshun » Sat Feb 15, 2020 7:51 pm

Swapping the batteries may not help the issue. Make sure there's not a voltage drop, because if it doesn't have the correct amount of juice it won't kick over the starter even if you put a known good battery in it.

You mentioned replacing the ECU and BCM... did you have those programmed? Sometimes those require special steps that can only be done by the dealer to activate. Was it starting fine before or after you changed those?

molonlabe
Posts: 14
Joined: Thu Sep 08, 2016 2:21 pm
Car: Current: 2015 Q50 Base, 2012 G37X, and a 2014 Honda Odyssey.

Previous: 2016 Q70L, 2015 Q50 Premium, 2017 Q50 Premium, 2018 Q50 Luxe AWD

Re: 2015 Q50 won't start - clicks once but no cranking

Postby molonlabe » Sun Feb 16, 2020 7:23 am

Kompresshun wrote:
Sat Feb 15, 2020 7:51 pm
Swapping the batteries may not help the issue. Make sure there's not a voltage drop, because if it doesn't have the correct amount of juice it won't kick over the starter even if you put a known good battery in it.

You mentioned replacing the ECU and BCM... did you have those programmed? Sometimes those require special steps that can only be done by the dealer to activate. Was it starting fine before or after you changed those?
yes, it started before just fine with the same configuration (after i replaced the ecu and bcm)..

so my guess is that it's the starter itself, it just conked out (i wouldn't be surprised, since it's a flood car - project car for me). but still, it started before and now nothing but the clicking..


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