1993 Q45power door locks won't lock with the lock button sometimes

[jasonhirt23]

My 1993 q45 sometimes will lock or not lock the doors when I puch the door lock button inside. What might be causing the problem? The lock "computer" under the console?Thanks.....Jason

[jltibbs]

Have you replaced the battery?

[maxnix]

Could be BCU, but check thoroughly the alternator and battery function first as JTibbs suggests.

[jasonhirt23]

So a weak battery could make the locks not engage or disengage? I can hear the bcu under the console clicking when I press the lock/unlock.

[Jim1999Q45]

Happens to many cars as they age. I was told that you're supposed to open the doors with the key once in a while. I got the locks on a 2000 Ford Ranger working off the button, recently, by greasing the rod and mechanism (took door panel off), and "exercised it with the key for a while.

Good luck!

[Infinitiguy19]

Could be BCU, but check thoroughly the alternator and battery function first as Jtibbs suggests.

No BCM on 1990-1993 Q45, just a ADP (Automatic Driver Postioner) Computer in its place, and I assume that all the other interior electronic have there own control unit.

Original poster see this: http://q45.org/timers.html

[maxnix]

Of course. But do 1993 have remotes?

If no BCM, then each door or pair (front and rear) would need some kind of control unit.

[Infinitiguy19]

Nope 1993 Q45's have no remotes or any of the 1994-1996 Q45's goodies.

The only thing 1993 Q45's share in common with the 1994-1996 Q45's are the seat pockets and colors interior and exterior, supposedly lose sodium filled exhaust valves and the different TCS Throttle body motors. But there may be more things I am forgetting.

I am not sure if the 1990-1993 Q45's have control units for the motors beside a switch and timer.

[Q45tech]

Failure to perform mainteance on lock assembly and plastic components securing metal control rods. Dirt, wear, and lack of proper lubrication.Eventually they will break and get replaced.

[jasonhirt23]

That's the thing,

Happens to many cars as they age. I was told that you're supposed to open the doors with the key once in a while. I got the locks on a 2000 Ford Ranger working off the button, recently, by greasing the rod and mechanism (took door panel off), and "exercised it with the key for a while.

Good luck!

I can't unlock the car via drivers door either. I can lock with the drivers door outside, but the key won't turn to unlock the car. But when I am in the car, sometimes I can lock/unlock with the button and sometimes I can't. I can hear under the console a clicking noise when I press the button, but nothing happens.

[goody90q45]

....I can hear under the console a clicking noise when I press the button, but nothing happens.

The center console? In the 93 FSM on page EL 129 it shows a door lock relay and a door lock timer directly below where a spilled cup of coffee would drip if it were placed in the center console, just forward of the air bag module. BTW- These two relays have been relocated per the 94 FSM.

Read up on universal relays. I'm not sure of the color but this relay may be one that you can swap with another of the same color somewhere else in the car until you can find a replacement. (Hint- Don't buy a new one. Many of us have bags of spare relays.)

[jasonhirt23]

The center console? In the 93 FSM on page EL 129 it shows a door lock relay and a door lock timer directly below where a spilled cup of coffee would drip if it were placed in the center console, just forward of the air bag module. BTW- These two relays have been relocated per the 94 FSM.

Read up on universal relays. I'm not sure of the color but this relay may be one that you can swap with another of the same color somewhere else in the car until you can find a replacement. (Hint- Don't buy a new one. Many of us have bags of spare relays.)

Yeah, good point....console!! I will check this out when I have the chance. You said it is the front relay right?