Battery changing and re-synchronisation procedures

If your key fob has stopped working or maybe it is just not responding as well as it used to then you will probably find the key fob is not transmitting at full strength, this is caused by the batteries being low on power and needing replacing. 

This is a very simply process which you can complete yourself, no specialist tools are required and it takes just a few seconds to do.

Re-synchronisation may be required if your old batteries have either completely discharged or if they have been removed from the key fob for more than a short period of time. 

The re-synchronisation procedure allows the key fob to obtain new codes from the vehicles ECU in order for it to operate again.

Select your vehicle model & age from the list below and complete this easy to follow procedure. Any questions email sille@btconnect.com


Range Rover P38 MkII 1994 - 2002

Key fob operation

  • Pressing key padlock button (1) once locks the vehicle & activates the alarm.

  • Pressing key padlock button (1) twice within 1.5 seconds activates double locking system.

  • Pressing key unlock button (2) once unlocks the vehicle & deactivates the alarm.

 

Replacing batteries

  • Look at the rear of your key fob. Both the key fob and the battery cover are marked with a small arrow. Hold the key fob in your hand, face down with the key blade pointing in the 12 o’clock position. You should notice the battery cover has a small arrow marked on it at the 3 o’clock position. The key fob should also have a small arrow marked on it at the 2 o’clock position.  

  • It is important these arrows are lined up when removing the battery cover. Use a coin (the larger the better) to twist the battery cover anti clock wise until the arrows meet. The battery cover & batteries should then drop out when you turn the key fob over. You may need to give it a little tap in the palm of your hand. If your key fob is old & tatty you may find that grease & dirt have been trapped around the edge of the battery cover making it harder to remove, if this is the case once the arrows are lined up pries the battery cover out using a small knife or screwdriver.  

  • The batteries fit into the back of the battery cover, if you are just replacing the batteries you swap the old with the new making sure you replace them the same direction as the ones you removed. Be careful when you handle the new batteries as finger grease on the battery may stop it from making the correct electrical contact. Now place the battery cover back into the key fob and lock it down by turning in a clock wise direction.

  • To check the key fob is working press the unlock button (2) and make sure the small red light on the front of the key fob lights up.

Synchronision procedure

  • On vehicles up to 1997, re-synchronisation is achieved by locking or unlocking the driver’s door using the vehicle key and then with the key still in the door immediately pressing the button on the remote handset. The BeCM monitors the condition of the driver’s door CDL switch to initiate the re-synchronisation.

  • On vehicles from 1997, friendly resynchronization was introduced on vehicles with passive immobilisation. A remote handset that is not synchronised to the BeCM will automatically be re-synchronised when the key is inserted in the ignition without using the vehicle key or Emergency Key Access (EKA) procedure. The re-synchronisation uses a pick-up coil in the remote handset and a passive coil located around the ignition barrel. The passive coil provides a signal for the remote handset to transmit an unlock signal to remobilise the vehicle.


Do you get the 'WINDOWS NOT SET' error message every time you open or close a window!

It's a common error message you will receive if your vehicles 12 volt battery is disconnected or if it runs flat for any reason. Just follow the simple procedure below and all will be fine again.

Windows Initialisation

Initialisation of the windows enables the one shot function on the front windows and the anti-trap function on all windows after battery disconnection.

Initialisation is achieved by holding the applicable window switch in the down position until the window stalls. Then hold the switch in the up position and when the window is fully closed hold the switch in the up position for a further 1 second. An audible chime will sound and the message centre will display a 'WINDOW SET' message to confirm that the applicable window has been set.

Sunroof Initialisation

Initialisation of the sunroof enables the one shot and anti-trap functions after battery disconnection.

Initialisation is achieved by holding the sunroof slide slide switch in the open position until the sunroof stalls. Then hold the sunroof slide switch in the closed position until the sunroof stalls at fully closed. Repeat the operation for the tilt open and close functions.

When the sunroof is successfully initialised, the message centre will display a ’SUNROOF SET’ message.


Emergency Key Access (EKA)  

You'd better make sure you know how to enter your EKA code, you will need it sooner or later...

If the vehicle is locked using the remote handset and loss or failure of the handset occurs, the vehicle can be unlocked and the alarm disarmed by entering a four digit code using the key in the driver’s door lock. The code is either a unique code for the vehicle and can be found on the security information card or a default value obtainable from the factory.

EKA procedure - Vehicles up to 96MY

1. Unlock driver’s door with the key.

2. Open the door and the alarm sounder will sound twice. If the key is inserted in the ignition at this point and an attempt is made to start the engine, the engine will not crank and the message centre will display ’ENGINE DISABLED PRESS REMOTE OR USE KEY CODE’.

3. Close the driver’s door and ensure that all doors, tail door and bonnet are closed.

4. Turn the key to the lock position.

NOTE: The code cannot be entered if the message centre displays ’KEY CODE LOCKOUT’.

5. Enter the code as follows. At each turn of the key to the lock or unlock position, the side lamps warning lamp in the instrument pack will flash to indicate that the key turn has been recognised.

6. Enter the first digit. If the first digit is 2, turn and release the key two times in the unlock direction.

7. Enter the second digit. If the second digit is five, turn and release the key five times in the lock direction.

8. Enter the third digit. If the third digit is four, turn and release the key four times in the unlock direction.

9. Enter the fourth digit. If the fourth digit is two, turn and release the key two times in the lock direction.

10. Turn the key to the unlock direction and, provided that the code has been entered correctly, all the doors and the tail door will be unlocked and the alarm will be partially disarmed.  

When the EKA code has been entered, the security LED will continue to flash in deterrent mode to show that the alarm is partially disarmed and will be triggered if the bonnet is opened. If the EKA code is entered incorrectly, on the final unlock turn of the key, a mislock will sound and the remaining doors and the tail door will remain locked and the alarm partially armed. If five incorrect attempts are made to enter the code, the BeCM enters a ten minute ’lockout’ period. Further attempts to enter the code will cause a mislock to sound each time the key is turned. During the lockout period, the message centre displays ’KEY CODE LOCKOUT’. If either of the front doors are opened while entering the code, a mislock will sound and the door will need to be closed and key locked and the code re-entered from the beginning. This will not count as an incorrect entry. With the vehicle in EKA mode, if the remote handset unlock button is pressed all doors will be unlocked and the alarm disarmed. The lock button will not operate while entering the EKA code.

EKA procedure - Vehicles from 96MY

If the vehicle is locked using the remote handset and loss or failure of the handset occurs, the vehicle can be unlocked and the alarm disarmed by entering a four digit code using the key in the driver’s door lock as described in the EKA procedure for vehicles up to 96MY with the following exceptions:

1. If the vehicle had not been locked with the remote handset, then in step 4, the key must be turned four times to the lock position.

2. The number of incorrect attempts is reduced to three and the lockout period increased to thirty minutes.