Comfort Roof Control Module for

  • Porsche Carrera (997) Convertible


  • Further information and manuals for all products can be found on our web site

    w w w . m o d s 4 c a r s . c o m

    We explicitly point out that all functions of this control unit should be used only while exercising caution and responsibility. We can NOT be held liable for any damage or injury caused by installing or using this product.
    Important Information. READ BEFORE INSTALLING!
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    If you run into any problems after installing the module, please go over the manual again in great detail, clicking every photo for full size!
    We now have a full Knowledge Base with Support Ticket system available online at

    If you need to contact us, the best and fastest way to do so is by opening a support ticket there

    This module comes with our USB Field Upgrade and Configuration Port! We recommend connecting it to a computer BEFORE YOU INSTALL and using our support app "m4cconnect" to do a quick firmware update check. M4cconnect as well as all other information regarding USB update and configuration can be found at You can even configure and activate your favorite module functions and settings on screen before the module is installed in the car! It is a good idea to permanently install the USB cable with the module in the car, leaving the computer plug in an easily accessible spot for later use with a Wifi/3G/4G connected laptop.

    If the top does not work properly or at all after installing the module, these tips can be very helpful:

    • 1) Turn Function 1 (Main Switch) off (Setting 0). The module will be completely passive. If the problem still persists and the top won't work, check all connections. Please also check the green DATA LED on the module!

    • 2) Function 2 now has a valet mode (Setting 2) on many modules. Valet mode completely disables opening of the top. Check the setting for function 2 and make sure the module is NOT in valet mode!

    IMPORTANT: Not all modules have the valet mode! Please check the Operation and Programming Manual!

    The DATA LED shows the module status and helps troubleshooting issues during installation:

    • When the ignition is ON: The LED should BLINK (flash) in a regular pattern (about 1x per second). This indicates that the module is receiving data and should work OK.

    • When the ignition is OFF: The LED should BLINK (flash) as long as the data bus is still active and turn off after a while (max 5 min) indicating that the car has entered stand-by (sleep) mode.

    • If the LED is permanently lit with the ignition ON, the module is NOT receiving data from the top controller and all connectors should be checked.

    • If the LED does NOT light up at all when turning the ignition ON, the module is either not getting power or not receiving ANY data. All connectors should be checked.
    Installation - Steps 1-3
    1. Open the roof to the service position as shown. This is done by first closing the top completely, then opening it only until the rear rim just touches the carpet in the back area. Turn off ignition and pull key from ignition lock.
    2. Locate the holding wires and the ball-and-socket joints that hold them. The joints are at the bottom of the wires.
    3. Unplug the ball-and-socket joints by pulling towards the middle of the car, away from you. Moving them in small circles helps to get them off easier.
    Installation - Steps 4-6
    4. Open the back part of the roof as shown. This works the same way with the glass rear window.
    5. Carefully remove the plastic plugs using a knife or screwdriver. Unhook the carpet from under the plastic "brackets" by pulling gently in the middle and on the sides.
    6. Remove the carpet to see the big grey (sometimes black) box which is the convertible top control. It carries the words "Steuergerät Verdeck" in German.
    Installation - Steps 7-9
    7. Unlock the left connector by pushing the little black tab under the white bracket in and simultaneously moving the white bracket to the right as shown.
    See picture #9 to locate and see the little tab that locks the white bracket in the closed position.
    8. Unplug the connector.
    9. Connect the plug with the matching socket on the wiring harness.
    Installation - Steps 10-12
    10. Flip the white locking lever (1) all the way up and make sure it latches. Then insert the plug from the wiring harness into the top controller, making sure its white locking lever (2) latches it securely into place.
    11. Connect the module to the wiring harness (1). The green LED on the module should now light up (module boots up), then turn off. Turn the ignition on and check the LED. If it blinks, everything is connected correctly. Attach the module securely to the cross bar with the supplied velcro sticker (as shown). IMPORTANT: Do NOT mount the module in the area on the left (2) where it could block mechanical movement of the little flap servo.
    12. Put the carpet back in place and fix with the black plugs. Plug the ends of the holding wires back onto the ball-and-socket joints.

    NEVER test the installation or operate the roof mechanism before the back part of the top (with the rear window) is flipped back down and the ball-and-socket joints are securely reattached! Failure to do so can lead to jamming of the roof mechanism and is an expensive repair trip to the Porsche dealer!