Since it is the windshield, you will have to reprogram it 2x, once with the ignition on and once with it off. Here's a overview of the procedure.
MCD Windshield Shade Upper and Lower Limit Adjustment Simplified
NOTE: Please Read the Directions in its Entirety Before Performing the Adjustments
1) Locate the learning button for the shade you want to set the limits for. The button will be on the motor side of the shade where the power wires go into the unit. The button is attached to a small gray wire. Turn your ignition key switch on. You will now set the upper limit and middle limit of the shade, above your eye level.
Note: You may need two people to perform this adjustment depending on where the buttons and switches are located.
2) Push the learning button ON and, at the same time, push the shade dash mounted rocker switch you use to put that shade up or down. Push the button so the shade travels “up” if it is in the down position or “down” if the shade is in the up position. Release both buttons when the beeping starts. You are now in the learning mode.
Note: Sometimes the programming buttons will become lost or disconnected from the gray learning wire at the motor end of the shade. If that is the case, you can perform this shade adjustment by touching the metal tips of the two ends of the gray wires together. This will simulate pushing the learning button on.
3) Press the same dash button in the same direction you were just going (either up or down) and hold it until it gets close to the upper or lower limit you want the shade to be set at. Release the dash button. You can now “bump” the shade button in the same direction of travel by repeatedly pushing it until you get it to the limit position you desire. Reverse the shade direction (up or down) from the direction you were initially moving the shade and do not release the button until the shade reaches the other limit you want to set. You will first hear a beep before the shade travels in the opposite direction. This
indicates that that limit has been set.
Note: This adjustment is for ignition ON so be sure you set your lower limit above your eye level. This is a safety feature and the shade should NOT go all the way to the dash with the ignition key switch on. The lower limit must not block your view of the road on either the day or night shade.
4) You can now once again “bump” the shade in the same direction of the desired limit. When there, reverse the shade travel with the dash switch. A beep is heard. Both limits are now locked in.
5) Test the shade limits by pushing the dash switch up to the upper limit and down to the lower limit. If all is well, you can now perform the same adjustment on the other shade (day or night) with the ignition ON if you desire.
Note: Once the ignition ON settings are changed, you MUST reset the limits for ignition off on the same shade. Changing the adjustments in one mode affects the other mode.
Setting the shade limits with the ignition OFF.
The procedure is the same as above, but with the ignition off, you can bring either shade totally down to the dash for complete coverage of the windshield when you are parked.
Note: If you release the dash button too soon when reversing the direction of the shade and you have a long distance to your stop point limit, the motor will only allow you to “bump” the shade up or down a little at a time. It may be quicker to reverse the direction again, which takes it out of the learning mode, and begin the procedure all over again (item #2 above) by holding both buttons and waiting for the beeps.