keyless entry fob battery replacement

utajoker · 14 Sep 2018 at 08:31

Hi

We have a Juke with Keyless entry and start that needs a battery replaced in the fob.

Do you have to go to Nissan and get them reprogrammed or anything or is it just a case of swap the battery and done?

Thanks.

benhaha85 · 14 Sep 2018 at 08:36

Unsure about Nissan specifically, but for my Focus I just swapped the batteries over. Can't see why it'd be any different for you.

Nasher · 14 Sep 2018 at 09:10

Open the fob and swap the battery. Done.

paintguy · 14 Sep 2018 at 09:13

At work we've replaced hundreds of fob batteries from just about every manufacturer and I've never known one have to be reprogrammed afterwards.

utajoker · 14 Sep 2018 at 09:27

Great thanks folks. Saved me a few quid

Maundie · 14 Sep 2018 at 11:15

Just done it on my Focus, pop the fob open swap the battery and hey presto no reprogramming needed.

JBuk · 14 Sep 2018 at 15:15

Done it for my fiesta st last week, it’s easy

Just don’t put the the battery in upside down then wonder why the key won’t work! What kind of idiot would do that

joey1211 · 14 Sep 2018 at 15:26

In my old Astra keyfob there was little chip that stored the code. It had a habit of falling out when open. Lose it and I would have needed to reprogramme it, costing a few hundred quid

ahenners · 14 Sep 2018 at 22:18

Same with my Skoda keys, take the key fob apart and change the CR2025 battery just like a normal key. They do seem to chew through batteries much quicker than non-keyless ones.

Nasher · 15 Sep 2018 at 11:02

Yep, because the key is constantly looking for the car :/

It's why they aren't secure. You can boost the signal and open/start the car from outside the house. It's a stupid design really.

ShiWarrior · 15 Sep 2018 at 21:42

***
There is a chip that will hold the program for like a minute before it is lost
as long as you remove the battery and put another one in straight away, you will be fine

Jamauk · 15 Sep 2018 at 23:09

I never found it an issue with the Focus, I was slightly sceptical about it all though. Just make sure the spare key is to hand as a failsafe though.

Jono8 · 16 Sep 2018 at 00:11

My Megane gave a warning that the keyless entry key fob battery was low a few weeks ago and like you i thought "hmm will this be expensive/take to the dealer job

".

Looked in the manual, and it simply said put a new battery in it. It even said they last ~2 years and the car was 2 years 2 months old so pretty much bang on.

It took a pretty standard cheap watch battery which you can get in a pack of 6 for like £1.50