Hi, I am getting battery low warning for one of my smart keys.
I have replaced the battery with a new one, same warning.
I have taken the battery out of my other smart key which is ok, placed
it in the faulty key and again get the warning. Is there a way to clear the
fault of the smart key. If not are they a 434 MHz smart key. Thanks

Hi,

I had this recently. There's a TSB about it. (SSM56277 for those that can access them)

To calibrate the new battery voltage you need to press any two buttons on the key while the message is displayed.

I can't remember whether it's two in rapid succession or together but give both a go!

Scrumps Somerset - Where the apples do grow and the cider do flow!
2021 Defender 90 D250 HSE in Tasman with white roof.
24MY D300 AB - Verasine Blue - 😀
19MY SDV6 AB - Byron Blue - Gone
17MY D5 SDV6 HSE - Firenze Red - Gone
16MY SDV6 AB -Aruba Silver - Gone
13.5MY SDV6 "HSE Black" - Baltic Blue - Gone
10MY TDV8 HSE Galway Green - Gone
14MY D4 HSE in Scotia Grey - Gone
05 TD5 D90 CSW in Cairns Blue

Mines been on since I bought it & it's on with both keys.ive tried pressing the buttons on remote but it doesn't go off.

Andy Andy.
21 Ford Ranger
Gone but not forgotten
Focus RS Red Edition
2015 RRS AB Fuji.
2014 RRS SC Santorini
2016 VW Amarok
2014 RRS AB Fuji
2012 RRS Red Edition Fuji
2015 Nissan Navara
2012 RRS SE Santorini
2008 RRS White
2007 RRS Santorino

Hi Andy,

As I said, it needs someone with TSB access to Topix to publish the full details - my Stealer just read me the relevant bit over the phone to clear my snag.

Scrumps Somerset - Where the apples do grow and the cider do flow!
2021 Defender 90 D250 HSE in Tasman with white roof.
24MY D300 AB - Verasine Blue - 😀
19MY SDV6 AB - Byron Blue - Gone
17MY D5 SDV6 HSE - Firenze Red - Gone
16MY SDV6 AB -Aruba Silver - Gone
13.5MY SDV6 "HSE Black" - Baltic Blue - Gone
10MY TDV8 HSE Galway Green - Gone
14MY D4 HSE in Scotia Grey - Gone
05 TD5 D90 CSW in Cairns Blue

Mines due to go into stealers for a service soon so I'll get them to clear the light then.

Andy Andy.
21 Ford Ranger
Gone but not forgotten
Focus RS Red Edition
2015 RRS AB Fuji.
2014 RRS SC Santorini
2016 VW Amarok
2014 RRS AB Fuji
2012 RRS Red Edition Fuji
2015 Nissan Navara
2012 RRS SE Santorini
2008 RRS White
2007 RRS Santorino

As per Topix SSM56277

Vehicles affected, 10my Range Rover, Range Rover Sport, Discovery4/LR4

Issue
When the " Smart key battery low" message is displayed in the instrument pack message center dealers are complaining that after a replacement battery has been fitted the message does not disappear. The dealer then replaces the key in the belief that the key is faulty.

Cause
Dealers are swapping batteries from known good smart keys to diagnose battery low message or fitting aged batteries off the shelf. The message is displayed when the smart key voltage threshold has dropped below 2.44 volts. The message will clear if the smart key battery threshold is higher than 2.95 volts.
Note: these voltages are only measurable when the battery is inserted in the smart key.

Action
When the " Smart key battery low" message is displayed in the instrument pack message center dealer technicians and customers must fit a NEW still in the packet battery.
Under no circumstances should you swap batteries from a known "good" smart key.
LR part number is YWK10003L. (battery type CR2032)

Please note: CR2032 batteries stored in high humidity +75% & at high ambient temperatures greater then (+25degC) will greatly reduce its shelf life.

After replacement of the battery two smart key authentications need to take place to clear the message and to recognize the new battery voltage.
This is achieved by pressing any button on the smart key twice.
If the "Smart key battery low" message does not clear in the message center fit another new battery and retry.

If the "Smart key battery low" message is still present please replace the smart key, submit an EPQR and retain the smart key and all associated batteries for investigation. Please label the original battery and replaced battery separately. 16MY Estoril Blue SVR.............
17MY Autobiography Dynamic - Corris Grey - WOW.
14MY Autobiography Dynamic - SDV6 - Fuji White
12MY Autobiography - SDV6 - Santorini Black - Dual View - Rear Entertainment - Sunroof.
12MY Autobiography - SDV6 - Orkney Grey - awesome ;(
2005 Java Black - 4.2 V8 Supercharged First Edition- will never be forgotten ;(

Cheers Peachy



Scrumps Somerset - Where the apples do grow and the cider do flow!
2021 Defender 90 D250 HSE in Tasman with white roof.
24MY D300 AB - Verasine Blue - 😀
19MY SDV6 AB - Byron Blue - Gone
17MY D5 SDV6 HSE - Firenze Red - Gone
16MY SDV6 AB -Aruba Silver - Gone
13.5MY SDV6 "HSE Black" - Baltic Blue - Gone
10MY TDV8 HSE Galway Green - Gone
14MY D4 HSE in Scotia Grey - Gone
05 TD5 D90 CSW in Cairns Blue

Guys, many thanks for the replies. Will try it now