Car won't lock / unlock
Car won't lock / unlock
Guys,
This just happened today out of the blue.
I have an '04 coupe and neither of my remotes will lock/unlock doors (batteries seem good).I have to lock the passenger side from inside the car manually and then use key to lock drivers side from outside and cannot lock the trunk. Also, the auto lock works ok when you drive off, and when I open the drivers door, the passenger one unlocks as it should. The interior switch works fine, locking and unlocking everything. The indicators flash as normal when using the remotes, so it appears they are communicating with the car.
Any ideas?
This just happened today out of the blue.
I have an '04 coupe and neither of my remotes will lock/unlock doors (batteries seem good).I have to lock the passenger side from inside the car manually and then use key to lock drivers side from outside and cannot lock the trunk. Also, the auto lock works ok when you drive off, and when I open the drivers door, the passenger one unlocks as it should. The interior switch works fine, locking and unlocking everything. The indicators flash as normal when using the remotes, so it appears they are communicating with the car.
Any ideas?
Last edited by UK Sid; 09-02-2017 at 01:01 PM.
Re: Car won't lock / unlock
Guys,
This just happened today out of the blue.
I have an '04 coupe and neither of my remotes will lock/unlock doors (batteries seem good).I have to lock the passenger side from inside the car manually and then use key to lock drivers side from outside and cannot lock the trunk. Also, the auto lock works ok when you drive off, and when I open the drivers door, the passenger one unlocks as it should. The interior switch works fine, locking and unlocking everything. The indicators flash as normal when using the remotes, so it appears they are communicating with the car.
Any ideas?
This just happened today out of the blue.
I have an '04 coupe and neither of my remotes will lock/unlock doors (batteries seem good).I have to lock the passenger side from inside the car manually and then use key to lock drivers side from outside and cannot lock the trunk. Also, the auto lock works ok when you drive off, and when I open the drivers door, the passenger one unlocks as it should. The interior switch works fine, locking and unlocking everything. The indicators flash as normal when using the remotes, so it appears they are communicating with the car.
Any ideas?
Worth a try I'd say.
Re: Car won't lock / unlock
Thanks 180.
I did try that earlier. This method...
Sat in the car, aimed remote at rear view mirror. Press one of the buttons twice. Place in ignition and turn on. Tried with both - no effect.
Also, when using the key in the lock, it only locks / unlocks the drivers door. No effect on passenger door or trunk.
I suppose I can assume it's not the pump, as the dash switch works ok, as does the auto lock.
I did try that earlier. This method...
Sat in the car, aimed remote at rear view mirror. Press one of the buttons twice. Place in ignition and turn on. Tried with both - no effect.
Also, when using the key in the lock, it only locks / unlocks the drivers door. No effect on passenger door or trunk.
I suppose I can assume it's not the pump, as the dash switch works ok, as does the auto lock.
Re: Car won't lock / unlock
Sid , go to the electrical section in the repair manual available here on the Forum for download it will help you track down your problem.
Re: Car won't lock / unlock
Thanks 180.
I did try that earlier. This method...
Sat in the car, aimed remote at rrear view mirror. Press one of the buttons twice. Place in ignition and turn on. Tried with both - no effect.
Also, when using the key in the lock, it only locks / unlocks the drivers door. No effect on passenger door or trunk.
I suppose I can assume it's not the pump, as the dash switch works ok, as does the auto lock.
I did try that earlier. This method...
Sat in the car, aimed remote at rrear view mirror. Press one of the buttons twice. Place in ignition and turn on. Tried with both - no effect.
Also, when using the key in the lock, it only locks / unlocks the drivers door. No effect on passenger door or trunk.
I suppose I can assume it's not the pump, as the dash switch works ok, as does the auto lock.
The red light is just a battery check.
Re: Car won't lock / unlock
Cheers buddy,
Just looking now. Seems fuse 9 does the following:
Sends a feed to the bcm. It also splices off to:
Alarm siren
Garage door opener?? / tps
Cargo lamp
Dome lamp
I had a quick look at the cargo lamp earlier and it looks good with no dodgy connections / short.
As it blew instantly, I must assume a short somewhere.
I wonder if it's the siren? - that's never worked since I've had the car.
I'm hoping it's not something internal in the bcm as they are costly!
Only thing I don't understand is that I can see no ref on the diagrams that this fuse would affect the remote locking system? - unless that goes via the bcm and that particular part / section of the bcm now has no supply, preventing the remotes from working.
Any other input is welcome..
Just looking now. Seems fuse 9 does the following:
Sends a feed to the bcm. It also splices off to:
Alarm siren
Garage door opener?? / tps
Cargo lamp
Dome lamp
I had a quick look at the cargo lamp earlier and it looks good with no dodgy connections / short.
As it blew instantly, I must assume a short somewhere.
I wonder if it's the siren? - that's never worked since I've had the car.
I'm hoping it's not something internal in the bcm as they are costly!
Only thing I don't understand is that I can see no ref on the diagrams that this fuse would affect the remote locking system? - unless that goes via the bcm and that particular part / section of the bcm now has no supply, preventing the remotes from working.
Any other input is welcome..
Last edited by UK Sid; 09-03-2017 at 12:34 PM.
Re: Car won't lock / unlock
Cheers buddy,
Just looking now. Seems fuse 9 does the following:
Sends a feed to the bcm. It also splices off to:
Alarm siren
Garage door opener?? / tps
Cargo lamp
Dome lamp
I had a quick look at the cargo lamp earlier and it looks good with no dodgy connections / short.
As it blew instantly, I must assume a short somewhere.
I wonder if it's the siren? - that's never worked since I've had the car.
I'm hoping it's not something internal in the bcm as they are costly!
Only thing I don't understand is that I can see no ref on the diagrams that this fuse would affect the remote locking system? - unless that goes via the bcm and that particular part / section of the bcm now has no supply, preventing the remotes from working.
Any other input is welcome..
Just looking now. Seems fuse 9 does the following:
Sends a feed to the bcm. It also splices off to:
Alarm siren
Garage door opener?? / tps
Cargo lamp
Dome lamp
I had a quick look at the cargo lamp earlier and it looks good with no dodgy connections / short.
As it blew instantly, I must assume a short somewhere.
I wonder if it's the siren? - that's never worked since I've had the car.
I'm hoping it's not something internal in the bcm as they are costly!
Only thing I don't understand is that I can see no ref on the diagrams that this fuse would affect the remote locking system? - unless that goes via the bcm and that particular part / section of the bcm now has no supply, preventing the remotes from working.
Any other input is welcome..
Here is a list of the settable functions for the Crossfire. CLICK
Last edited by onehundred80; 09-03-2017 at 12:41 PM.
Re: Car won't lock / unlock
The garage door module is a transmitter/receiver, maybe it is also the receiver for the fob signal.
Here is a list of the settable functions for the Crossfire. CLICK
Here is a list of the settable functions for the Crossfire. CLICK
However, it's the fuse blowing / short that's the issue - just need to trace what's causing it.
Re: Car won't lock / unlock
The garage door module is a transmitter/receiver, maybe it is also the receiver for the fob signal.
Here is a list of the settable functions for the Crossfire. CLICK
Here is a list of the settable functions for the Crossfire. CLICK
Re: Car won't lock / unlock
180 is correct at least on the Roadster it is all Incorporated at the rear view mirror. The left side of my map/ dome light stopped working took it apart to see what the problem was, I found that one of the metal conducting strips had come loose and was not making contact, so I put it back in place and reattached it using a hot glue gun been working ever since. Might be worth taking a look at your short could be in there
Gut feeling is something to do with the dome light or siren assembly.
Won't have any time now until next weekend though - can't really be bothered after work in the evenings!..
I can live with the issue in the meantime. Only thing I can't lock is the trunk, but where I live is pretty quiet and I work at a high security site where the car park is monitored 24/7.
Re: Car won't lock / unlock
Will do buddy - cheers.
Gut feeling is something to do with the dome light or siren assembly.
Won't have any time now until next weekend though - can't really be bothered after work in the evenings!..
I can live with the issue in the meantime. Only thing I can't lock is the trunk, but where I live is pretty quiet and I work at a high security site where the car park is monitored 24/7.
Gut feeling is something to do with the dome light or siren assembly.
Won't have any time now until next weekend though - can't really be bothered after work in the evenings!..
I can live with the issue in the meantime. Only thing I can't lock is the trunk, but where I live is pretty quiet and I work at a high security site where the car park is monitored 24/7.
Re: Car won't lock / unlock
180 is correct at least on the Roadster it is all Incorporated at the rear view mirror. The left side of my map/ dome light stopped working took it apart to see what the problem was, I found that one of the metal conducting strips had come loose and was not making contact, so I put it back in place and reattached it using a hot glue gun been working ever since. Might be worth taking a look at your short could be in there
Re: Car won't lock / unlock
My siren started going crazy 2 years ago, I removed fuse 9
and have been driving it like that ever since, can't lock trunk you
say? Temporary fix: Grab some duck tape or whatever
strong tape you have and tape the little open/closed
door switch "door ajar" on the drivers side, It might take a few strips
of tape to hold it down .. Now when you exit the car the trunk
and passenger door will not automatically unlock and will
stay locked until you manually open them with button
on the center console, the driver door continue to use key to lock it.
Good luck
PS: You say the alarm has never worked since you got the car?
that's strange! usually they either go bad and never shut up like mine did!
or else they continue to work just fine ... I would def look at the alarm siren
first, take it off and leave it off .. put fuse 9 back in and see if it blows..
Last edited by BenzFire; 09-05-2017 at 02:54 AM.