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A blown fuse or a damaged computer would cause the turn signals, interior lights, and door locks not to work in the Mazda 3. The fuses are located under the dash on the driver's side of the car.
Check for a loose power steering belt.
Bad door lock actuator.
The cause of your power doors and locks and radio volume not to work could be a blown fuse. Locate the proper fuse to ensure it has not blown.
check the fuse
cause you farted on it
I replaced the drivers door switch on mine and it took care of the problem
power door locks don't work on my 1997 Honda crv
Put the key in the lock and turn it to unlock the door.
dodge truck power window mmotor not running and window falls down
If they both don't work, check the fuse. Under the dash on the drivers side. Could be a problem with the master control switch on the drivers door? I've had to replace the window regulators and both door switches, one at a time, never both at the same time.
Computer failure