If we changed the battery for the lock and unlock remote control for a Range Rover HSH 2006 and the code is lost, how do I reset the code.

There is a sequence of left and right turns of the key in the driver's door that will reset your bECM (Rovers brain) if the following have been tried.
1. Replace batteries in remote and 're-sync by depressing lock button on remote while physically turning and locking the door. Don't release button until locked and key removed. Repeat for unlock button.
2. Disconnect negative/earth cable from battery. While disconnected open driver's door, turn ignition to position 2, return to battery leaving driver's door open and reconnect the negative cable. Proceed to ignition. Turn off completely. Close all doors and hood and attempt starting.
Should both of these methods fail, run a search here on fixya for "engine disabled Range Rover P38" This will take you to step by step instructions on resetting the bECM which I opened this post with. It has been covered many times here, including by myself, no reason to post it again.
Good Luck!

Removing the battery on these vehicles often results in an "arming" of the alarm system and needs to be reset by a dealer or a shop with qualified equipment. You can try disconnecting the battery for 10 minutes, hooking it back up and using the key fob to lock and unlock the vehicle before trying to start it. If the vehicle does not crank after the above procedure, then fault codes may need to be cleared and/or programming may need to be carried out.

dead battery or you made need a new remote

Check the batery in your remote

take yor remote to a cobler key shop should be abel to help

You need to re-sync the Remote...

The remote handset uses a "rolling code" algorithm, meaning the code is changed every time remote locking or unlocking is performed. If you have removed the battery - then that Rolling code was lost.

If the normal Synchronization does not work, Possibly you will need to use the EKA Proceedure (Emergency Key Access).

Use this link to the appropriate information to aid you in solving your issues.

put the key into the ignition and turn to position 2 leave it for 10 mins it will charge the battery on the key remote

Unfortunately, there is a trick to replacing the battery.
1) Open the Driver side door.
2) Open the Bonnet and take the battery cover off.
3) Use your remote to lock and unlock the car (keeping the driver side door open)
4) Pull the Negative Lead from the battery first, followed by the Positive Lead.
5) Change or replace with charged battery.
6) Closed down Bonnet.
7) Your windows, sunroof, and key FOB will not work... so follow the next steps.

7a) Insert your key, with door closed into the exterior lock on driver's side.
7b) While turning the key to lock the door, hold down the "lock" button on your remote for 5 seconds while in "lick" position
7c) Your remote will reset, and you should be able to use your remote now
7d) While driving, roll each window down twice. On your third attempt, you should only have to touch the window button, and the window will have reset

Enjoy your Rover!
MIke

This car is in super lock mode... when you press remote 2times to lock or when you lock with remote and try to unlock using key manually.

there is a 4 digit number to open the door, its like opening a safe, starting from the left(key in car door) it goes L/R/L/R. so if number code is 1234..... left 1, right 2, left 3, right 4.

or if this too troublesome you can ask landrover dealer to remove the KEYCODE.

happy trying.....
adrian/kk.

Prob your RF reciver. Change it for about £130 ish. Make sure your access code works before the change to avoid confusion. Use part YWY 500 170 only.
If you can't get the £££ unplug the RF reciver (behind rear NS passenger seat) and use the key manualy. Good luck.