However if the noise suddenly becomes louder or more.
Power door locks buzzing.
Helpful guide on diagnosing power door lock problems with the passenger multiplex control unit and the door lock actuators.
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Those noises are normal.
Unusual noises coming from inside the door are one of the first symptoms of a potential problem with a power door lock actuator.
They are small electric motors used to lock and unlock the car doors when activated by a switch or remote.
Most power door locks operate using gears or motors that may quietly whir or make noise when they operate.
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Most power door locks operate using gears or motors that may quietly whir or make noise when they operate.
The lock actuator consists of a small electric motor that drives.
Usually the most common problems with power door locks are the actuators.
The buzzing comes from the worm gear on the motor slipping on the gear teeth.
Remove the plastic trim around door handle.
If the electric motor or the mechanism inside the door lock actuator wears out the door lock may lock or unlock slowly or work sometimes but not all the time.
There are 2 screws just above the door handle you need to remove.
Never knew about the trick about taking it apart and rotating the gears.
Common problem on all mazda s not just the millenia.
Then lift up on door panel to disengage the weatherstip on top of panel.
It is a horrendous job removing that door module but even worse trying to get it back in.
Unusual noises coming from inside the door.
Then starting at bottom of door panel pull out to disengage the push pin clips and work your way up both sides of panel.
Mine started the buzzing a while back and after opening the lock actuator i can see that it comes from the teeth being worn off a plastic gear wheel inside the actuator.
Like any electric motor sooner or later it will fail.
In some cars a door lock actuator becomes noisy and produces a squeaking or buzzing noise when the power door locks are locked or unlocked.
Replacing an actuator involves removing the interior door panel for access.