Driver Side Sliding Door Won't Open at All - 07 Quest

Here are the codes you posted along with the possible issues that may have caused each code to be triggered. It's possible the circuit these switches share has a problem that needs to be diagnosed.

It could well be a problem with the wiring or a problem with the connections between the switches and the Multiplex Control Unit, or possibly with the Multiplex Control Unit itself.

B1129

• Driver Side Door Lock Knob Switch Signal Error
• Faulty Driver Side Door Lock Knob Switch
• Driver Side Door Lock Knob Switch harness is open or shorted
• Driver Side Door Lock Knob Switch circuit poor electrical connection
• Faulty Door Multiplex Control Unit

B2077

• Right Power Sliding Door Remote Control Switch 1 Signal Error
• Faulty Right Power Sliding Door Remote Control Switch 1
• Right Power Sliding Door Remote Control Switch 1 harness is open or shorted
• Right Power Sliding Door Remote Control Switch 1 circuit poor electrical connection
• Faulty Right Power Sliding Door Control Unit

B2078

• Right Power Sliding Door Remote Control Switch 2 Signal Error
• Faulty Right Power Sliding Door Remote Control Switch 2
• Right Power Sliding Door Remote Control Switch 2 harness is open or shorted
• Right Power Sliding Door Remote Control Switch 2 circuit poor electrical connection Faulty Right Power Sliding Door Control Unit

B2079

• Right Power Sliding Door Remote Control Switch 3 Signal Error
• Faulty Right Power Sliding Door Remote Control Switch 3
• Right Power Sliding Door Remote Control Switch 3 harness is open or shorted
• Right Power Sliding Door Remote Control Switch 3 circuit poor electrical connection
• Faulty Right Power Sliding Door Control Unit

How about a year, make, model????? Not all cars are the same

What kind of vehicle is it?

use ur key to open the driver side of the door while door is open,,,it should shut off

U will have to take the inside door cover off and manualy open it. And replace the electric door locking switch. Very common problem. Get the new lock and latch assembly from dealer,

More than likely the connecting rod that goes from the door lock actuator to the locking mechanism itself came unattached. These rods are usually held in place by a small piece of plastic that the rods "pop" in and out. The only other thing i can imagine possible is that the door lock itself is actually seized up. In order to attempt to fix this, you would have to remove the door side panel to see the inner workings of the door, and this is quite difficult on most side sliding doors (i have a 2000 pontiac montana w/dual sliding doors). Hope this can help you solve your problem.

Look at the other door and look on the front edge to see where the child safety lock switch and see if that is the problem with the other door. That has happened with mine several times. Someone will play with it leaving it on so it can't be opened.

open the front door...
now you have to push the locking rod towards the rear so you can open the sliding door from the inside
just follow the B pillar down and use the passenger side as reference of that black rod

the child lock rod may have been extended...
open the driver side door, and with a skinny finger, push that child lock rod back in towards the rear of the sliding door
use the passenger side as reference
once you pushed it in, you can now open it from the inside handle