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!
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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.
    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. Open trunk and remove bottom cover. It can be folded and then diagonally eased out (pull carefully but with force). The roof controller box (1) sits openly embedded in the styrofoam floor cover and can easily be accessed. Remove plugs from controller box (they are secured with push-in tabs).
    2. The styrofoam is divided, so the right half can be lifted up and removed. Pass the wires through while lifting the cover up and out.
    3. Shown here are the data plug (1) and the power plug (2) from the top controller box. Remove some of the electrical tape (3) around the wires going to the black power plug. The supplied wire taps will have to be attached here.
    Installation - Steps 4-6
    4. Attach the supplied power taps using combination pliers to the wires going to the black plug exactly as shown. Attach the +12V wire tap directly to the THICK RED-GREY wire in contact slot no.8. Connect the GROUND wire tap to the THICK BROWN wire in contact slot no.9. IMPORTANT: There are several brown wires! Check the contact slot numbers! They are printed on the black plug.
    5. Thanks to the new SmartTOP plug-and-play harness the installation is very simple! Connect the SmartTOP harness in between the red data plug and the top controller.
    6. Attach the power connections first, red wire (1) for +12V and brown wire (2) for ground. Make sure the coding connection (3) is closed (plugs connected). Then connect the SmartTOP module to the matching plug on the wiring harness. Now tap the unlock button on the remote once and the green LED on the module should BLINK (see InstallAID LED section). If it does, then all connections are good.