Steps to Grease Your Window Regulator Rail
If your car's windows don't fully close, this is due to a faulty window regulator rail. The window regulator rail is a component of an assembly that enables your car window to roll up and down. If your window regulator rail is defective, this poses a problem for you because you need to have windows that function properly. This is particularly true when you're driving in harsh weather conditions that require you to close your windows fully so that your car's climate control system can operate. If you can't replace your window regulator rail, you can opt to grease it.
Difficulty level: Difficult
Things you'll need:
- 10m socket and ratchet (Note: It is best to use a 3-inch extension or a deep socket.)
- Head screwdriver
- Synthetic grease
Step 1: Pry up the window control unit using a flat head screwdriver.
Step 2: Disengage the wire harness and push through behind the door panel.
Step 3: Use a small object that can get behind the prying point and then remove the cover. Be careful that you do not leave scratches.
Step 4: Use a head screwdriver to remove the two screws.
Step 5: Move the latch assembly away from the door.
Step 6: Identify the location of the securing clip, push it off the latch cable, and then remove the plug. Then push the plug behind the door panel. Once you have removed the latch assembly, remove one more screw in the upper right corner of that pocket.
Step 7: Remove the last two screws that hold the door panel to the doorframe.
Step 8: Push out the plastic clips that hold the door panel to the door using a panel popper or a flat head. Once these plastic clips have been pushed out, ease the door panel up and away from the door. Ensure that there is a plastic covering between the door panel and doorframe to prevent water from infiltrating electrical components.
Step 9: Reconnect the window control unit in order for you to be able to slide your window up and down. Then, unscrew the bolts that hold window to regulator assembly.
Step 10: Hold the window glass from the top. Use the window control unit to slide the window halfway up. Then, manually ease the rest of the window out. It would probably be easier for you to tip your window forward and back it out.
Step 11: To remove the regulator assembly, loosen the bolts located in the yellow squares. Remove the two bolts located in the red squares and disconnect the connection to the assembly.
Step 12: Remove the assembly from the door.
*Note: If you heard a rattling noise from your door while you were lowering or raising your window, this step will let you identify if the noise is from the regulator or the slider that holds the glass.
Step 13: Check the clips that hold the glass and see if any are loose.
Step 14: Reconnect the power cable to the regulator assembly. Ask someone to hold the regulator for you and listen to it as it moves up and down. The window regulator rails may need further greasing to fix the rattling noise. If the rattling noise doesn't get resolved, you may need to replace the whole assembly.