Key not detected

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Nov 29, 2025 | 08:52 PM

Gta1216

Thread Starter

Rookie

Joined: Jan 2020

Posts: 35

Likes: 3

From: Il

Key not detected

I've experienced more frequently lately that the key is in the cup holder and it says the key is not detected. Also, it happened several times the past 2 weeks that the car would not start and said I had to press on the brake and place the key fob by the start button. Why is that? Is it anything for concern that I should take the car in?

Nov 30, 2025 | 03:34 AM

mtnman

Driver

Joined: Apr 2017

Posts: 70

Likes: 34

From: KY

Sounds like a dead battery in the key fob.

Nov 30, 2025 | 08:45 AM

Gta1216

Thread Starter

Rookie

Joined: Jan 2020

Posts: 35

Likes: 3

From: Il

The key fob battery was replaced by the service dept as part of the service.

Nov 30, 2025 | 04:31 PM

Droid13

Pole Position

Joined: Dec 2012

Posts: 2,149

Likes: 960

From: Toronto, ON

Quote:

Originally Posted by Gta1216

The key fob battery was replaced by the service dept as part of the service.

Doesn't necessarily mean the battery is good.

Nov 30, 2025 | 07:06 PM

GXWes

Intermediate

Joined: Sep 2022

Posts: 265

Likes: 117

From: FL

Have you tried using the other Key FOB?

Dec 1, 2025 | 12:41 PM

gamma742

Advanced

Joined: Feb 2018

Posts: 593

Likes: 126

From: San Diego

Quote:

Originally Posted by Gta1216

The key fob battery was replaced by the service dept as part of the service.

Doubtful.. but perhaps

Dec 3, 2025 | 10:23 AM

GeoM

Driver

Joined: Mar 2025

Posts: 57

Likes: 8

Deffinitely fob battery.try Panasonic,Murata

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Dec 4, 2025 | 04:55 PM

TheCDN

Instructor

Joined: Jan 2023

Posts: 1,168

Likes: 657

From: Niagara Falls, Ontario

These things are so easy to install I wouldn't bother with dealer on this one. Plus you never know if they've screwed up the retention tabs for the button shaped battery. If they're broken you might not get good contact. Dealer may have old or cheap or stale batteries plus maybe didn't put in a CR2032 but a weaker CR 2025. Both will fit but the latter is much weaker battery.

https://www.ic-components.com/blog/U...025%20Overview

See my post #54 on how to install both key card and fob batteries:

https://www.clublexus.com/forums/nx-...uestion-4.html