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How to find the lock relay. the automatic lock does not work - and the inside button will unlock but not the doors. The remote sounds like it is locking the doors but they are not locked.
Re: How to find the lock relay. the automatic lock does...
Really need the year make and model...but most relays are in the underhood fuse box. Do any of the doors lock? Did they all quit locking at once? Have you tried the other lock button?
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I have read this 6 times and still not sure what the issue is? I have a 2005 ES330. To open all the doors with the key fob, you have to double press the Unlock Button. Pressing the Unlock button once, only opens the driver door.
The door lock module and further help is in the link.
If you hit the unlock button in the door 2 times, it should unlock the tailgate. Otherwise you may have to go back to the dealership and have them program a new remote for you. If the battery in your remote went dead, it may work again by replacing the battery.
This is a wild guess, but it sounds like the switch that controls the door is constantly trying to open the door. It could be the door switch. Try locking the door with the door switch and then hold the lock slightly down to see if it is a mechanical failure in the switch. If not, the remote system may be sending the unlock. You could always pull the fuse for the automatic locks and see if the key will lock/unlock without problem. But then you'd never have remote entry.
check door locks fuses and relays.if all is good and you cant operate door lock buttons manually problem could be in the generic electronic module.if door locks dont work from the remote battery could be dead in remote transmitter.try to reset door locks control module first obtain all remote transmitter.sit inside vechicle with all doors closed.switch ignition from off to on 8 times in 10 seconds. doors should lock then unlock.when this procedure works then press any button on any of the remote transmitter doors should lock and unlock.if all fails let dealership fix..
both the rear passenger side wont unlock ???? How many doors are on the passenger side ? Or both back doors don't unlock ?
Two relays lock / unlock the back door's Not the lift gate . The BCM controls the relay's . The relay's are located in the rear fuse box . Under back seat .
You must reset your remote control in order for the lock/unlock to work properly.
To reset remote you would: 1)Insert Key in Ignition Turn to Position 1(Don't Start the Engine) for about 5 seconds 2)Turn Key Off and HOLD the LOCK button on Remote while pressing the UNLOCK 3 TIMES 3)Release both lock and unlock buttons you are holding 4)All doors should automatically unlock
if you can here relays when unlocking/locking check for power at door lock actuators inside doors, if you have power on lock/unlock and good earth from connector actuators are faulty.
if no power on test light when operating check output from central door lock module while operating, none coming out of module then it might need replacing.
check 30Amp power fuse for main relay under bonnet (which goes to pin 8 white/blue on module)and 10Amp gauge fuse in cab(pin 1 blue/red on module),pin 15 is also power when relay is on(red/blue) with test light, and module/ actuators.
check outputs from module pin 3 & 4
blue/red
blue/black
that go to door locks
I am having a similar issue but I can't even unlock the passengers side door and the remote is not operating properly either. Sadly, the car alarm is also causing problems - arming, disarmning and sounding at will. The mechanic informed me that the control inside the door (that operates the locks) is corroded from water getting inside the door. The cost to repair is approx. $600.
Thanks 2008 Pontiac Grand Prix
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