I have y reg toyota avensis.My car key was dropped in sea water.After while I dried it completely.i changed the battery the circuit shows me light while pressing the push button on key but it's not locking or unlocking the car.Can any body suggest any guidence please.
Thanks

Bharat Patel, October 2010

if it is a GB built car with the buttons in the key, all you have to do is ,
1. Open drivers door and leave open.
2. Place key in ignition and turn to ON. (Do NOT turn to START.) Leave for 10 seconds.
3. Press unlock button on key twice.
you should now hear locks cycling, once they have stopped the system should be working from your key buttons.

The man, October 2010

hi bharat try this,
driver's door open & key removed from ignition switch.
insert key into ignition switch,then remove it twice within 5 second's.
within 40 second's:close & open driver's twice.
insert key into ignition switch,then remove it
within 40 second's:close & open driver's door twice.
insert key into ignition switch.
close driver's door.
switch ignition on & off once to program a new key codewhilst retaining the original codes or twice to program a new key code whilst erasing the original codes
remove key.
system should now lock & unlock vehicle,once ortwicedepending on whichmode has been selected.
carry out the following button procedure within 20 second's:
avensis verso: simultaneously press & hold lock & unlock button's for 1-1,5 seconds.
avensis:press lock button for minimum of 1 second & release.
within 3 second's:press key lock button for a minimum of 1 second & release.
system should now lock & unlock vehicle.
NOTE:if system lock & unlock's vehicle twice,programming procedure has not been completed.
repeat button procedure.
if required repeat button procedure to program remaining key's.
hope this help's

GHOST, October 2010