Comfort Roof Control Module for

  • Mazda MX-5 PRHT


  • 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.

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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

    EXTREMELY IMPORTANT: In order to avoid problems with diagnostic tools and to avoid confusion or injury by unexpected features or functionality we urge you to ALWAYS DISABLE the module before taking the car to a shop or lending it to anyone! If problems arise while the module is installed that might be related to our product, ALWAYS contact Mods4cars directly first and enter a support ticket at NEVER take the car to a dealer without getting support first!

    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.
    The green DATA LED signals a correct installation and shows the status of the module.

  • Ignition OFF: CAN bus and module are in low-power standby mode. This is normal.
  • Ignition ON: Either power connection or CAN bus connection is interrupted. Check the two wire taps for power and ground as well as the CAN connectors. Also make sure the CAN polarity is correct.
    LED either dimly lit or flickering erratically
  • A dim or flickering LED is an indicator for interrupted or missing POWER or GROUND connections. The module will get some leakage current from the CAN bus which causes the LED to stay dimly lit or flicker erratically. See previous paragraph about wire taps if applicable!
    LED permanently ON
  • Module is connected to CAN and power, but does not receive the correct data. Recheck all connections thoroughly. A VERY COMMON source of problems is reversed polarity on the CAN wires. Double-check the POLARITY and wire-colors of all connections!
    LED blinks
  • CAN bus is active, the module is connected correctly and ready for use.
  • Installation - Steps 1-3
    1. Open the convertible top for better access. IMPORTANT: Turn off ignition and pull key out before continuing! Open the cover behind the driver's seat (left side of the car) as shown. Use a flat screw driver or any flat object like a coin to pry it out on the top.
    2. Lift up the padding to reveal the convertibe top controller. The bottom plug (marked with the arrow) will have to be removed in the next step.
    3. For better visualization the locking mechanism is shown on the smartTOP plug (1), marked with an arrow. It needs to be pushed down while pulling hard on the plug. Once the plug is out, plug it into the matching socket on the smartTOP wiring harness (2).
    Installation - Step 4
    4. Connect the smartTOP plug (1) to the top controller, then connect the smartTOP module to the harness. Turn the ignition on. A rapidly blinking green LED (2) will indicate proper installation. Lastly, program the module as desired, according to the operation manual.