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lamontgomery
lamontgomery, Ford Mechanic
Category: Ford
Satisfied Customers: 466
Experience:  14 years experience, 2000-2006 Senior Master, ASE master in Truck and Auto, Level 1 Fire mechanic
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2004 ford freestar: the power door locks will unlock..drivers side

Resolved Question:

I have a 2004 ford freestar, the power door locks will unlock okay, but only the drivers side will unlock. Why?
Submitted: 6 years ago.
Category: Ford
Expert:  lamontgomery replied 6 years ago.
Are you using the keyless entry remote? Or the unlock button on the door?
Customer: replied 6 years ago.
Only the drivers side will unlock, all doors will lock. It does not matter if i use the remote. The remote or switch on the drivers side will unlock the drivers door, but nothing else, but the switch or remote on the drivers side will lock all the doors fine.
Expert:  lamontgomery replied 6 years ago.

Do you have any type of alarm installed on your Freestar? The keyless entry remote is a factory remote? Or is it from the installed alarm?

Customer: replied 6 years ago.
The remote is factory with not alarm.
Expert:  lamontgomery replied 6 years ago.

I was just looking at the wiring diagram, there are 3 seperate relays controlling the door locks. It's possible that the unlock relay is not working or the smart junction block is not commanding it to work. The smart junction block is a body control module that controls much of the interior electrical functions. I could not locate these relays in the wiring diagram. I'll need to do a little more digging to see if it's integrated into the module or if it is seperate.graphic

Customer: replied 6 years ago.

Thank you,

 

I will check later.

Expert:  lamontgomery replied 6 years ago.

I was digging in the service manual and following through the pinpoint tests, it looks like that the relays are integrated into the module. Your problem could be as simple as an open in the wiring, or you can have a faulty smart junction box. It would be best to see if there are any codes stored in the smart junction box and have the appropriate pinpoint test performed. I thought this would be something simple to isolate and repair, but it looks like you will need a Ford specific scantool to do the appropriate testing.

Sorry I could not give you a simple fix,

Loy

This is a brief description from the service manual, the problem you have falls under this pinpoint test.

graphic

Customer: replied 6 years ago.
The locks will work intermittenly. They will always lock from the remote or the drivers side door, but sometimes the driver's door is the only one to unlock from the remote or button. I do not think it is an actuator, is there a way to replace a relay and where is it located?
Expert:  lamontgomery replied 6 years ago.
Just looking at the wiring diagrams and the service manual and it looks like the lock and unlock relays are integrated into the smart junction box. The smart junction box is the large fuse panel located at the LH side of the dash, just in front of your LH foot.
Expert:  lamontgomery replied 6 years ago.

Just looking at the wiring diagrams and the service manual and it looks like the lock and unlock relays are integrated into the smart junction box. The smart junction box is the large fuse panel located at the LH side of the dash, just in front of your LH foot. It may be as simple as a poor electrical connection if it's working intermittently.

lamontgomery, Ford Mechanic
Category: Ford
Satisfied Customers: 466
Experience: 14 years experience, 2000-2006 Senior Master, ASE master in Truck and Auto, Level 1 Fire mechanic
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