Comfort Roof Control Module for

  • Audi A3 Convertible
  • Audi A4/S4 (B6/B7) Convertible
  • Audi TT Roadster Model Year 2007


  • 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!
    This manual is designed to produce completely filled pages. In order to get best print results, simply set the borders to minimum settings in the browser's page setup menu and disable headers and footers.

    Activate the print preview and if necessary decrease the zoom level until all pages are shown correctly.

    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.
    This module is installed using the 3M wire taps very popular with 12V aftermarket industry for their reliability and durability. The most common problem during installation is a bad contact between the plugs from the supply wires and the wire taps. Please make absolutely sure that the metal blades of the plugs slide into the slots of the t-taps. It happens that the blade "misses" the slot and the connection looks correct, but doesn't make electrical contact!

    The T-taps come in RED (for thin wires), BLUE (for medium wires) and YELLOW (for thick wires).

    To test if you installed the module correctly after all wires are connected, turn the ignition fully on and watch the green LED on the module. It should blink (flash) to signal a correct installation. If the LED either does not turn on or stays on permanently, there is a bad contact or a missing connection! See detailed explanation of the DATA LED.
    Installation - Steps 1-3
    1. Turn the ignition on and open the roof completely. Then start closing the roof and stop when the rear lid is fully open (vertical position). This enables access to the area marked (2). IMPORTANT: Turn off the ignition and remove key before continuing! Remove rear seat bench (lift up front portion with force), then remove T-30 torx screw (1).
    2. Remove rear side panel: First pull towards the center of the car (1) then lift up and slide up and frontward out. Simultaneously pull the back rest up (where the torx screw was removed earlier). The side panel is just snapped into place and can be lifted off along the rubber edge (2). Directly behind the panel is the roof controller box.
    3. Remove the black plug from the controller box (secured with push-in tab), then remove some of the electrical tape around the wires on the black plug. Using combination pliers, attach the two supplied wire taps as shown to one of the brown wires near the grounding bolt and to the red-purple wire on the black plug.
    Installation - Steps 4-6
    4. Remove the red plug from the roof controller.
    5. Connect the red plug to the matching socket on the smartTOP wiring harness. Make sure it slides all the way into the socket and the red latching tab snaps into place with an audible click.
    6. Connect the red plug from the smartTOP wiring harness to the top controller.
    Installation - Steps 7-9
    7. Connect the power wires to the yellow wire taps, first connect the brown (ground) wire, then the red (+12V) wire, while making sure that the contact blades of the plugs slide all the way into the slots of the taps. Reconnect the black plug which was removed in step 3 to the top controller box.
    8. Only on Audi A4 convertibles disconnect the two small connectors from each other (1) before connecting the smartTOP to the plug. Leave this connection open permanently after installing the module in the car.
    9. Attach the smartTOP module using the supplied velcro pad as shown, then connect the black plug to the top controller and tap the unlock button on the remote once. The green LED on the module should blink, indicating a successful installation. Put everything back together in reverse order and configure the module according to our Operation and Programming manual. Done. IMPORTANT: Due to several reports about rain water damage we recommend protecting the module against humidity and water leaks by placing it in the supplied ziploc bag with its opening pointing down.