Keypad entry

Discussion in 'Generation 4 - Maintenance & Troubleshooting' started by Bryan Kuban, Jan 14, 2020.

  1. Bryan Kuban

    Bryan Kuban Member

    Joined:
    Oct 7, 2019
    Messages:
    53
    Likes Received:
    10
    Gender:
    Male
    Location:
    St. Louis, Mo
    I am new here to this forum but was suggested it by someone on another page. Question you guys may or may not know. I have had my 16 SHO for about 1 year now. I had the keypad entry programmed and it has been working fine. The other day it stopped working for some weird reason. I have to master number but when I go to program it, it won't program. The master number doesn't work either. Any ideas?
     
  2. Johnbigdog

    Johnbigdog SHO Member

    Joined:
    Feb 17, 2017
    Messages:
    1,236
    Likes Received:
    1,511
    Gender:
    Male
    Location:
    michigain
    There is a dot led above the number pad. When you press the individual numbers does that dot light up?

    No= pad or circuit fault. I doubt the Remote Function Actuator (module) is bad. The key pad is the whole trim piece and double sided taped to the door.
     
    jtreber and SHOdded like this.
  3. rubydist

    rubydist SHO Master Staff Member Super Moderators

    Joined:
    Jun 25, 2007
    Messages:
    7,034
    Likes Received:
    2,941
    Location:
    Denver
    The touchpads on these models were notorious for failing. When I was at the Lincoln store, we had to replace nearly all of them on the 3 year old cars we were certifying, because they were not working. The replacement parts are supposed to be more reliable.
     
    SHOdded and luigisho like this.
  4. Bryan Kuban

    Bryan Kuban Member

    Joined:
    Oct 7, 2019
    Messages:
    53
    Likes Received:
    10
    Gender:
    Male
    Location:
    St. Louis, Mo

    Yes the light lights up. Factory code won't work either.
     
  5. Johnbigdog

    Johnbigdog SHO Member

    Joined:
    Feb 17, 2017
    Messages:
    1,236
    Likes Received:
    1,511
    Gender:
    Male
    Location:
    michigain
    So the touchpad has power, ground. The dot at the top is to confirm the input. There is a separate circuit that the rfa uses to power the LEDs that backlight the touch pad.

    There are three signal circuits between the touchpad and the rfa that the touchpad uses to communicate the touchpad code being pressed. So it is posible there is still a pad or circuit fault. I believe there is PIDs you can look at to see if the RFA is seeing all three inputs.

    I would assume the master code you have is from the business card that was in the owners info? If not, you can double check the master code through the touchscreen using 2 keys.
     
    jtreber and SHOdded like this.
  6. Bryan Kuban

    Bryan Kuban Member

    Joined:
    Oct 7, 2019
    Messages:
    53
    Likes Received:
    10
    Gender:
    Male
    Location:
    St. Louis, Mo

    Sorry to sound dumb but I am not sure of the acronyms. I am still learning them for these cars. What is PID and RFA? Where would I test thoses? What voltages am I looking for?

    The Code is from the Card, and I verified it is the same that is under the drivers side dash that they are the same.

    How can you verify on the touchscreen by using 2 keys? When I go into the screen settings to set the door code it allows me to erase all and imput a new code and save it but it still does nothing. The 1-2 button isn't as sensitive as the rest of the buttons either.

    thanks in advance for all the help also.
     
  7. rubydist

    rubydist SHO Master Staff Member Super Moderators

    Joined:
    Jun 25, 2007
    Messages:
    7,034
    Likes Received:
    2,941
    Location:
    Denver
    Unfortunately, the above is misleading.

    In order to confirm the keypad actually works, you need to press 1 key and see if it lights up. If it does, you have to wait until the light times out, then press the next key and repeat the process until you get through all of the keys (one at a time and waiting for the light to time out for each key pressed). In 99% of the cases, there is only 1 of the keys that is not working. When you press a key and it does not light up, that means you found which key is bad.
     
    SHOdded likes this.
  8. Johnbigdog

    Johnbigdog SHO Member

    Joined:
    Feb 17, 2017
    Messages:
    1,236
    Likes Received:
    1,511
    Gender:
    Male
    Location:
    michigain
    PID = Paramater IDentification. You would plug in a scan tool and see what the module is seeing.

    RFA = Remote Function Actuator. The keypad is an input to this module. This module also controls the passive key function, and the door locks.

    For Rubydist, the light I'm speaking of is at the very top of the pad and only lights up when one of the buttons is pressed. It's not a back lit button.

    I will agree it is posible for the key pad to see an input, but not send an output (the pad is a module and not just switches) or the input not seen by the FRA module. I was using it as a way to visually see if the buttons are working. Output is another game.

    20200116_063059.jpg 20200116_063051.jpg

    Other than that, you're doing circuit testing. Voltage reading I can tell you. You'll have to check for shorts, opens, high resistance and connectors for contamination.
     
    jtreber and SHOdded like this.
  9. Joel Raymond

    Joel Raymond New Member

    Joined:
    Aug 11, 2019
    Messages:
    1
    Likes Received:
    0
    Gender:
    Male
    Location:
    Richmond, Texas
    Has anyone replaced this personally? Difficult?
    My SHO was bought used and the touch pad has never been reliable
     
  10. SHOdded

    SHOdded SHO Member

    Joined:
    Dec 25, 2011
    Messages:
    8,540
    Likes Received:
    3,921
    Location:
    Maryland
    For a 2010, make sure to set a weekend aside LOL

    Keyless Entry Keypad
    Removal and Installation


    WARNING: Disconnect the window regulator motor connector before working inside the vehicle doors. Service actions inside the door (such as door latch, handle or lock cylinder service) or operating the remote keyless entry (RKE) fob may activate the windows on vehicles equipped with global open/close. Serious injury to hands or arms may occur if a window motor is activated during service. Failure to follow these instructions may result in serious personal injury.

    1. Remove the exterior mirror. For additional information, refer to Section 501-09 .
    2. Lower the door glass all the way to the bottom of its travel.
    3. NOTE: The exterior window glass molding is a one time use. A new exterior window glass molding will need to be installed.
      1. Release the tabs, then lift up and remove the exterior window glass moulding.
    4. Remove the front door trim panel. For additional information, refer to Section 501-05 .
    5. Position the water shield aside.
    6. Raise the door glass all the way to the top of its travel.
    7. Disconnect the window regulator motor electrical connector.
    8. Remove the door lock cylinder. For additional information, refer to Door Lock Cylinder in this section.
    9. Disconnect the front door latch actuator electrical connector.
    10. Remove the door lock rod extension from the rod.
    11. Push the door lock rod and grommet through the door panel.
    12. Push the interior door handle cable and grommet through the door panel, and pull them back out through the door panel access hole.
    13. Remove the door latch carrier screw.
    14. Remove the 2 window glass rear track nuts.
      1. To install, tighten to 11 Nm (97 lb-in).
    15. NOTICE: To prevent the front door glass from breaking, do not use excessive force when pushing on the window glass track.
      1. Push the lower window glass track stud through the door panel and move the bottom of the glass track toward the front of the vehicle.
    16. Loosen the exterior door handle reinforcement bolt.
      1. To install, tighten to 7 Nm (62 lb-in).
    17. Slide the exterior front door handle reinforcement to the front of the vehicle and push inside the door.
    18. Remove the 3 front door latch bolts.
      1. To install, tighten to 12 Nm (106 lb-in).
    19. Remove the complete latch, carrier and handle reinforcement assembly from the door.
    20. Disconnect the keyless entry keypad electrical connector and unclip the connector from the door.
    21. Unclip the keyless entry keypad harness from the door.
    22. Connect the window regulator motor electrical connector.
    23. Lower the window glass all the way to the bottom of its travel.
    24. NOTE: The keyless entry keypad is attached to the door with double-sided tape.
      1. Using a suitable tool such as a trim removal tool, remove the keyless entry keypad.
    25. To install, reverse the removal procedure.
     
    Joel Raymond, luigisho and zoomlater like this.

Share This Page

If you wish to help keep SHOforum running, please click the donation button below