The key fob for my 99 Toyota 4 Runner unlocks doors,won't lock them.

go to any Toyota dealer. They will sell you a new key fob but they also charge extra for programming. Total cost for the key fob and programming will be around $100. any Toyota dealer can do it for you

Your FOB has gone bad. Try your other FOB just to make sure and let me know ....

Try reprogramming the fob. You can find videos on youtube

When you press the trunk open button, do you hear any "release" noise come from the trunk area? The issue may be a bad battery in the key fob OR there could be an issue with the transmitter located inside the vehicle. Do the doors lock and unlock properly? is the vehicle equipped with security or immobilizer? please advise

On the driver side the actuator is more likely the culprit,the linkage could of come off or the actuator just doesnt work

1. get in the car
2. shut the door
3. place the key in the ignition
4. lock the doors, manually
5. turn the ignition to on then off...do this seven times
6. unlock the doors and try your remote

If the passkey is messed up, there will be a light on the dash that says security, or have a picture of a car with a lock thru it. If there is no light when the key is turned forward, then its NOT a passkey problem.

reprogram the remote transmitter. first leave driver door open all other doors closed,key removed from the ignition switch. insert key into the ignition switch,then remove it.press lock and unlock on the vechicle door lock control switch at 1 second intervals 5 times. close and repoen drivers door.press lock and unlock on the vechicle lock control switch at 1 second intervals 5 times. insert key into ignition switch. switch ignition on and off twice to program a remote transmitter code whilst erasing the original codes or three timre to check how many remote transmitters are currently registered.remove key from the ignition switch.system should now lock and unlock.twice to indicate programming mode or one to four times,slowly to indicate number of remote transmitters registered.for the solara press and hold lock and unlock remote buttons together, press lock remote button for a second period of 1 second. system should now lock and unlock vechicle.once to confirm, twice to indicate registration has failed.if required repeat button procedure to program remaining remote transmitters.note to exit programming mode close drivers door or insert ignition key.maximum of 4 remote transmitters can be programmed.if akk failed let dealership reprogram remote transmitters.

I have the same problem I can unlock my toyota 99 4 runner but does not lock on inside switches or remote.

just found out about it today.

To program a remote... note that you must not delay more than 10 seconds between any of the operations.

Driver's door open, all other doors closed, key removed from the ignition switch.

Insert key into ignitions switch, then remove it.

Press LOCK then UNLOCK on the vehicle door lock control switch at 1 second intervals 5 times.

close and re-open drivers door.

Press LOCK and UNLOCK on the vehicle door lock control switch at 1 second intervals 5 times

Insert Key into ignition switch.

Switch ignition ON and OFF once to program a remote transmitter code while retaining the original codes or twice to program a remote transmitter code while erasing the original codes. three times to check how many remote transmitters are currently registered, or 5 times to erase all registered codes.

Remove Key from ignition switch.

System should now lock and unlock vehicle. Once, twice or five times depending which mode has been selected. It will lock and unlock one to four times slowly, to indicate the number of remote transmitters registered if you chose option 3.

Press and hold remote transmitter LOCK and UNLOCK buttons at the same time.

Press LOCK remote button for 1 second: System should now lock and unlock vehicle once to confirm, twice to indicate registration has failed.

NOTE: to exit programming mode, close drivers door or insert key in the ignition.

NOTE: a maximum of 4 remote transmitters can be programmed