Key Fob Battery Replacement - Hyundai Forums : Hyundai Forum

Register Home Forums Active Topics Photo Gallery Garage Members List Calendar Auto Loans Search Today's Posts Mark Forums Read Auto EscrowInsurance

Hyundai-Forums.com is the premier Hyundai Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 11-16-2009, 11:48 PM   #1 (permalink)
Junior Member
 
Join Date: Nov 2009
Posts: 3
mymarbles
Thumbs down

For my 2003 Elantra: If I replace the CR2032 battery in my keyless entry fob, does that somehow cancel the code, which would then require me to pay a Hyundai dealer to reset it? Or do the fobs each have their own unique unchangeable code which is saved by my Elantra's ETACS module, meaning I could change the fob battery and still have it operate correctly?

The local Hyundai dealer wants [b]$64 to set a fob for my car (!) so it would be nice to know before making an appointment.

We might just change the battery in one of them as an experiment.
mymarbles is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-17-2009, 03:07 AM   #2 (permalink)
Senior Member
 
Shambles's Avatar
 
Join Date: Feb 2008
Location: Manchester UK
Posts: 423
Shambles
Default

My User Manual says nothing about the retention life of the code, so I would guess that nothing is lost during the changeover

But do please try the experiment and let us know


__________________
Visit us at the i30 Owners Club
Shambles is offline   Reply With Quote Quick reply to this message
Old 11-21-2009, 06:50 AM   #3 (permalink)
Senior Member
 
gazza!!!'s Avatar
 
Join Date: Oct 2008
Location: Birmingham England
Posts: 232
gazza!!! is an unknown quantity at this point
Default

QUOTE (mymarbles @ Nov 17 2009, 12:48 AM)
Quote:
For my 2003 Elantra: If I replace the CR2032 battery in my keyless entry fob, does that somehow cancel the code, which would then require me to pay a Hyundai dealer to reset it? Or do the fobs each have their own unique unchangeable code which is saved by my Elantra's ETACS module, meaning I could change the fob battery and still have it operate correctly?

The local Hyundai dealer wants [b]$64 to set a fob for my car (!) so it would be nice to know before making an appointment.

We might just change the battery in one of them as an experiment.
You must always change the battery within about twenty to thirty seconds or the fob will lose it's program code!!!

Gazza!!!
gazza!!! is offline   Reply With Quote Quick reply to this message
Old 11-23-2009, 05:52 PM   #4 (permalink)
Junior Member
 
Join Date: Nov 2009
Posts: 3
mymarbles
Cool

FOLLOW-UP

Okay, I replaced the battery and it works fine. Had the fob open with the old battery out for about a full minute before putting it back together. I'll bet each transmitter is made with its own unique code which is then saved in the ETACS module during the transmitter code saving procedure.

I bought this car in Jan 2004 from a rental agency who, at first, claimed this car didn't have keyless entry. So I checked into it, found this Elantra was indeed keyless entry-capable and ordered a new fob/transmitter for [b]$124. It cost another [b]$40 for the dealer to set the code. I remember the service guy asking if I had an additional fob so they could do it at the same time but I said no.

Two weeks later, a package arrived in the mail from the place where I bought this car. It contained the original keyless entry fob, attached to a spare key, with a note saying, "We found the original key & fob for your car. Sorry!", but it no longer worked as its code was erased during the recent code saving procedure. I've just never needed a second fob and don't want to pay [b]$64 for code saving since now I have a fresh battery and the codes are intact.

...and if I do lose my fob, I already have the exact replacement.
mymarbles is offline   Reply With Quote Quick reply to this message
Old 11-24-2009, 03:16 AM   #5 (permalink)
Senior Member
 
Shambles's Avatar
 
Join Date: Feb 2008
Location: Manchester UK
Posts: 423
Shambles
Default

You're welcome
__________________
Visit us at the i30 Owners Club
Shambles is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hyundai Forums : Hyundai Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Random Question


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 05:18 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.