Posts: 2
Joined: Sun Oct 07, 2018 5:34 pm
Delivery Date: 08 Oct 2018

car won't start

Sun Oct 07, 2018 5:40 pm

This only started yesterday, but when I push the start button I get a message that says "key is not detected". After I try a few times it will sometimes start, but not always. What is going on?

Posts: 8225
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: car won't start

Sun Oct 07, 2018 6:02 pm

Most likely one of these:
- key fob battery is dead or low. If you've seen https://imgur.com/a/ff7C6w0 in the dash, it's the warning telling you the of this.
- interference/something blocking communications between the fob and car (e.g. phone in the same pocket/in the way)
- less likely: low 12 volt battery

Try holding up the key fob to the power button and starting, the next time. You should hear a chime as the fob is almost up to the button.

What model year Leaf do you have? The above indicator applies to '11 to '17 Leafs. I don't know off the top of my head the equivalent indicator on '18 to '19 Leafs.

'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Posts: 2
Joined: Sun Oct 07, 2018 5:34 pm
Delivery Date: 08 Oct 2018

Re: car won't start

Sun Oct 07, 2018 6:24 pm

It's a 2016. I don't get a battery fob low signal. It can't be interference because I will hold the key right next to the start button. It was working fine until yesterday when it happened the first time. I just went out and the car started right up.

Gold Member
Posts: 1832
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: car won't start

Sun Oct 07, 2018 6:38 pm

I suspect the battery in the key fob since the car is at least 2 years old. The dash display should warn you, but loose connections at the little battery or a marginal battery can cause the voltage to drop suddenly and prevent transmission (or greatly reduce the transmit power). I generally need to replace the fob battery after about 2 years on the one I use daily. The one that stays in the desk drawer lasts longer.
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

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