I have synced one key and i am trying to program the second key but it wont accept it

Help please

Note the last point which may assist you:
To synch the keys
1) Get in and close all doors. Turn ignition on and off quickly and remove the key (all within about 5 seconds).

2) Within 30 seconds of turning the ignition off, while holding down the "unlock" button, press the "lock" button three times. Release the "unlock" button. (You may or may not get the confirmation from the door locks.) Holding the key at your head level provides best results as the key sensor is in the side window pillar.

3) Repeat for each key you want to initialize within 30 seconds after the last one you initialized (if you have more).

4) Right after doing the last key, quickly put the key back in the ignition and turn it on/off again to finalize.

Between stages 2 and 3 above DO NOT put the additional key in the ignition (stage 1) as this starts the whole process again. John
2008 Stornoway Grey 3.6 Tdv8 Vogue
2005 TD6 Java Black Vogue - Written off!!
GAP iiD BT
2003 Discovery TD5 Auto, Nanocom Evolution - gone to a new home!
MasseyFerguson 152 - No electronics!! - Sold

When trying to synch another key it may be possible that the address list for the keys is full and requires electronically clearing. There are some threads on this subject if you carry out a search.

Also, it is a cheap easy option to try fitting a new battery into the other key, just in case, Hope this helps

PS - It will help people to help you if you add your vehicle to your profile so we know which model / year etc you have, L322 / 405 etc

He’s posted in L322 so I took it that is what he has. Could be wrong, of course.🤔 John
2008 Stornoway Grey 3.6 Tdv8 Vogue
2005 TD6 Java Black Vogue - Written off!!
GAP iiD BT
2003 Discovery TD5 Auto, Nanocom Evolution - gone to a new home!
MasseyFerguson 152 - No electronics!! - Sold

Thanks everyone for your help - its much appreciated I will try later to today and update the post.

My vehicle is an L322 2006 4.4 petrol

Thanks Bruce

Update after trying the above and I still cannot get the second key to marry in with those steps and it has a new battery. Maybe the memory is full like one of the posts suggests, i have an IID Tool so maybe that might help????

I had the same problem

turning the ignition on/off once will clear all keys and allow re-programming of only ONE key

Try this:

Fit the working key in the ignition and turn on and off TWICE
remove key

go through the process for both keys Current: 2003 TD6 HSE. 161,000 miles
Previous 1993 Classic 3.9