mods4cars product manual

OPERATION AND PROGRAMMING

STHFCT1

Comfort Roof Control Module designed for

• Chevrolet Corvette C8 (2020+)

Firmware v1.20 and up

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

PLEASE READ THE COMPLETE MANUAL CAREFULLY BEFORE USING THIS PRODUCT.

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. Operation must be supervised and paid attention to in order to ensure that there are no objects or persons in range of moving parts due to the fact that top mechanics do not have pinch protection. Please study and be aware of the procedures to interrupt an ongoing operation in an emergency.

Important Information. READ BEFORE USING!
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	TROUBLE SHOOTING - NEED TO CONTACT US? 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 www.mods4cars.com/support 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 www.mods4cars.com/usb. 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.

Detailed function description (Factory setting underlined)

Function 1 - MODULE MODE + MASTER SWITCH ( 0=OFF / 1=ON / 2=EXT )
The module can quickly and easily be enabled and disabled using this function. It acts like a master switch. When disabled, the module becomes completely inactive and behaves as if it was not installed while keeping all other function settings intact for when it is re-enabled later. • Setting 1 is the regular operation mode with emphasis on safety. Turning the ignition on or off as well as hitting any button on the remote at any time during remote operation immediately stops an ongoing top operation. • Setting 2 is the extended operation mode with emphasis on convenience. Starting or stopping the engine will not stop a top operation and it is possible to lock or unlock the doors one time from the remote while the top is moving. Setting 2 requires extra responsibility and caution to avoid injury by moving top parts to passengers not expecting the top to continue running after the engine is turned off and due to the fact that the first key press on the remote to lock or unlock the doors (or continued toggling of the door locks) will not stop the top! To abort the operation, press unlock while the doors are unlocked or lock while they are locked. EXTREMELY IMPORTANT: In order to avoid problems with diagnostic tools and to avoid confusion or risk of injury by unexpected top movement, we urge you to ALWAYS DISABLE the module before taking the car in for routine maintenance or lending it to a third person! In case of any top malfunction NEVER take the car with the module still installed to an unsuspecting dealer! In such cases ALWAYS contact Mods4Cars for support first at www.mods4cars.com or completely uninstall the module before a dealer visit.

Function 1 - MODULE MODE + MASTER SWITCH ( 0=OFF / 1=ON / 2=EXT )

The module can quickly and easily be enabled and disabled using this function. It acts like a master switch. When disabled, the module becomes completely inactive and behaves as if it was not installed while keeping all other function settings intact for when it is re-enabled later.

• Setting 1 is the regular operation mode with emphasis on safety. Turning the ignition on or off as well as hitting any button on the remote at any time during remote operation immediately stops an ongoing top operation.
• Setting 2 is the extended operation mode with emphasis on convenience. Starting or stopping the engine will not stop a top operation and it is possible to lock or unlock the doors one time from the remote while the top is moving.

Setting 2 requires extra responsibility and caution to avoid injury by moving top parts to passengers not expecting the top to continue running after the engine is turned off and due to the fact that the first key press on the remote to lock or unlock the doors (or continued toggling of the door locks) will not stop the top! To abort the operation, press unlock while the doors are unlocked or lock while they are locked.

EXTREMELY IMPORTANT: In order to avoid problems with diagnostic tools and to avoid confusion or risk of injury by unexpected top movement, we urge you to ALWAYS DISABLE the module before taking the car in for routine maintenance or lending it to a third person! In case of any top malfunction NEVER take the car with the module still installed to an unsuspecting dealer! In such cases ALWAYS contact Mods4Cars for support first at www.mods4cars.com or completely uninstall the module before a dealer visit.

Function 2 - Console Switch One-Touch ( 0=OFF / 1=ON )
This function allows full automatic top operation using the console switch. • Setting 1 enables One-Touch operation and comfort close for all windows. Top operation with the console switch: • Holding down the switch (longer than 1 sec) in either direction will operate the top in manual mode for as long as the switch is held. • Tap open 1x: Open the top and bring the windows into the programmed position. • Tap open 2x: Open the top and bring the windows into the opposite position this one time. • Tap close 1x: Close top and windows. • Tap close 2x: Close only the top and leave the windows open. Comfort close for all windows: • Tap the top close switch while the top is already closed to roll all windows up. To interrupt an ongoing operation: Tap the console switch in any direction at any time - even if the top was started by remote!

Function 2 - Console Switch One-Touch ( 0=OFF / 1=ON )

This function allows full automatic top operation using the console switch.

• Setting 1 enables One-Touch operation and comfort close for all windows.

Top operation with the console switch:
• Holding down the switch (longer than 1 sec) in either direction will operate the top in manual mode for as long as the switch is held.
• Tap open 1x: Open the top and bring the windows into the programmed position.
• Tap open 2x: Open the top and bring the windows into the opposite position this one time.
• Tap close 1x: Close top and windows.
• Tap close 2x: Close only the top and leave the windows open.

Comfort close for all windows:
• Tap the top close switch while the top is already closed to roll all windows up.

To interrupt an ongoing operation: Tap the console switch in any direction at any time - even if the top was started by remote!

Function 3 - Console Switch Invert ( 0=OFF / 1=ON )
This function allows reversing the direction of the console switch. • Setting 1 activates reversed direction operation.

Function 4 - Remote Top ( 0=OFF / 1=HOLD / 2=TAP / 3=BOTH )
This function allows full automatic top operation with the original remote fob by pressing the lock and unlock buttons. Important limitations and caveats: 1) The lock and hold sequence is artificially range limited from the factory. The unlock and hold sequence works up to the full range of the remote fob. 2) In order to use the LOCK button for any of the TAP sequences, the car needs to be set to emit flasher signals when locking the car (in the center console car settings screen). • Setting 1 (Hold) allows opening and closing of the top by holding down buttons on the remote. • Setting 2 (Tap) allows opening and closing of the top by tapping buttons on the remote multiple times. • Setting 3 (Both) allows both of the methods to be used. Top operation with the remote fob using HOLD: • Tap UNLOCK once, then hold ROOF button down for about 4 sec: Toggle roof (raise if down and close windows, lower if up, bring windows in programmed position). • Tap LOCK once, then hold ROOF button down for about 4 sec: Close top and windows. (limited range). Top operation with the remote fob using TAPS: • Tap UNLOCK 3x in 1 sec intervals: Toggle roof (raise if down and close windows, lower if up, bring windows in programmed position). recommended method • Tap UNLOCK 4x in 1 sec intervals: Toggle roof (raise if down and leave windows down, lower if up, bring windows in opposite position). • Tap LOCK 3x in 1 sec intervals: Close top and windows. (flasher confirmation required). • Tap LOCK 4x in 1 sec intervals: Close only the top while leaving the windows down. (flasher confirmation required). The recommended way to open and close the roof is by using TAPS and always using TAP UNLOCK THREE TIMES. That will work up to the full range of the remote, is not dependent on the flasher setting in the car computer and is easiest to remember. To interrupt an ongoing operation: Tap unlock again or press the roof switch in the driver's door in any direction. IMPORTANT: Keep in mind that in EXTENDED mode (Fn 1 Set 2) switching the ignition on or off will not interrupt an ongoing roof operation!

Function 4 - Remote Top ( 0=OFF / 1=HOLD / 2=TAP / 3=BOTH )

This function allows full automatic top operation with the original remote fob by pressing the lock and unlock buttons.
Important limitations and caveats:
1) The lock and hold sequence is artificially range limited from the factory. The unlock and hold sequence works up to the full range of the remote fob.
2) In order to use the LOCK button for any of the TAP sequences, the car needs to be set to emit flasher signals when locking the car (in the center console car settings screen).

• Setting 1 (Hold) allows opening and closing of the top by holding down buttons on the remote.
• Setting 2 (Tap) allows opening and closing of the top by tapping buttons on the remote multiple times.
• Setting 3 (Both) allows both of the methods to be used.

Top operation with the remote fob using HOLD:
• Tap UNLOCK once, then hold ROOF button down for about 4 sec: Toggle roof (raise if down and close windows, lower if up, bring windows in programmed position).
• Tap LOCK once, then hold ROOF button down for about 4 sec: Close top and windows. (limited range).

Top operation with the remote fob using TAPS:
• Tap UNLOCK 3x in 1 sec intervals: Toggle roof (raise if down and close windows, lower if up, bring windows in programmed position). recommended method
• Tap UNLOCK 4x in 1 sec intervals: Toggle roof (raise if down and leave windows down, lower if up, bring windows in opposite position).
• Tap LOCK 3x in 1 sec intervals: Close top and windows. (flasher confirmation required).
• Tap LOCK 4x in 1 sec intervals: Close only the top while leaving the windows down. (flasher confirmation required).

The recommended way to open and close the roof is by using TAPS and always using TAP UNLOCK THREE TIMES. That will work up to the full range of the remote, is not dependent on the flasher setting in the car computer and is easiest to remember.

To interrupt an ongoing operation: Tap unlock again or press the roof switch in the driver's door in any direction. IMPORTANT: Keep in mind that in EXTENDED mode (Fn 1 Set 2) switching the ignition on or off will not interrupt an ongoing roof operation!

Function 5 - Remote Windows ( 0=OFF / 1=HOLD / 2=TAP / 3=BOTH )
This function allows separate control of the windows with the original remote fob. • Setting 1 (Hold) allows opening and closing of the windows by holding down buttons on the remote. • Setting 2 (Tap) allows opening and closing of the windows by tapping the buttons on the remote multiple times. • Setting 3 (Both) allows both of the methods to be used. Window operation with the remote fob using HOLD: • Tap UNLOCK once, then hold roof button down for about 1 sec: Toggle windows (raise if down, lower if up). • Tap LOCK once, then hold roof button down for about 1 sec: Close all windows. (limited range). Window operation with the remote fob using TAPS: • Tap UNLOCK 2x in 1 sec intervals: Toggle windows (raise if down, lower if up). recommended method • Tap LOCK 2x in 1 sec intervals: Close all windows. (flasher confirmation required). The recommended way to open and close the windows is by using TAPS and always using TAP UNLOCK TWO TIMES. That will work up to the full range of the remote, is not dependent on the flasher setting in the car computer and is easiest to remember.

Function 5 - Remote Windows ( 0=OFF / 1=HOLD / 2=TAP / 3=BOTH )

This function allows separate control of the windows with the original remote fob.

• Setting 1 (Hold) allows opening and closing of the windows by holding down buttons on the remote.
• Setting 2 (Tap) allows opening and closing of the windows by tapping the buttons on the remote multiple times.
• Setting 3 (Both) allows both of the methods to be used.

Window operation with the remote fob using HOLD:
• Tap UNLOCK once, then hold roof button down for about 1 sec: Toggle windows (raise if down, lower if up).
• Tap LOCK once, then hold roof button down for about 1 sec: Close all windows. (limited range).

Window operation with the remote fob using TAPS:
• Tap UNLOCK 2x in 1 sec intervals: Toggle windows (raise if down, lower if up). recommended method
• Tap LOCK 2x in 1 sec intervals: Close all windows. (flasher confirmation required).

The recommended way to open and close the windows is by using TAPS and always using TAP UNLOCK TWO TIMES. That will work up to the full range of the remote, is not dependent on the flasher setting in the car computer and is easiest to remember.

Function 6 - Window positions after opening top ( 0=NONE / 1=FRONT / 2=ALL )
This function determines the position of the windows after an automatic top opening run. Important: On 2024+ models the rear window can not be raised by the module. Use only setting 0 or 1 on those. • Setting 0 leaves all windows down. • Setting 1 raises the front windows only. • Setting 2 raises all windows (before model year 2024 only)

Function 7 - Hazard flashers ( 0=OFF / 1=ON )
This function activates the hazard flashers during remote controlled top operation or when the top continues running after the ignition has been turned off. • Setting 1 flashes the blinkers similar to the regular hazard flashing signal.

Function 8 - Signal Beeps ( 0=OFF / 1=REM / 2=ON )
This function emits a sequence of brief beeps when starting the top by remote or roof switch. • Setting 1 activates 4 beeps when using the remote. • Setting 2 activates 4 beeps when using the remote and 2 beeps when using the roof switch. IMPORTANT: This function is meant as a safety measure by giving an audible confirmation and warning that the top is about to move fully automatically. Under normal circumstances this function should stay enabled.

Function 8 - Signal Beeps ( 0=OFF / 1=REM / 2=ON )

This function emits a sequence of brief beeps when starting the top by remote or roof switch.

• Setting 1 activates 4 beeps when using the remote.
• Setting 2 activates 4 beeps when using the remote and 2 beeps when using the roof switch.

IMPORTANT: This function is meant as a safety measure by giving an audible confirmation and warning that the top is about to move fully automatically. Under normal circumstances this function should stay enabled.

Programming
	This module offers several different functions, each with several settings. All functions and settings are described in detail above and a quick reference table (matrix) can be found at the end of this manual. We recommend printing the matrix and storing it in the glove box! To activate the programming mode, turn the ignition fully ON (no need to start the engine), make sure the roof and windows are FULLY CLOSED, press and hold the brake pedal, then hold down the convertible top CLOSE switch (1) until the cluster beeps once and shows a "top not secure" message (2). Now let go. The module outputs the current function via the beeper followed by a short pause, then that function's setting via the beeper. As an example, one beep followed by a brief pause and two beeps: Function 1 is currently set to setting 2. To select the function, tap the top switch briefly. To change the setting of the selected function, hold the switch for about 1 sec. A brief tap on the top open switch advances to the next function, a brief tap on the top close switch returns to the last one. After counting the current function and setting via the beep signals, a one second hold on the top open switch increases the setting while a one second hold on the top close switch decreases it. To end programming mode, either turn the ignition off or hold down the top switch in either direction for a longer time (about 5 sec) until the cluster beeps once (and the same top message appears). Programming mode also terminates automatically after 60 sec. of inactivity. • Shortcut to toggle Main Switch: With the ignition on and roof/windows fully closed as above, press the brake pedal and keep the roof CLOSE switch pressed (ignoring the first cluster beep signal) for a full 10 seconds, until the cluster beeps once again, then let go. After a brief pause the beeper will indicate the new Function 1 (Main Switch) setting (silence=OFF, 1x=ON, 2x=EXT).

Programming

This module offers several different functions, each with several settings. All functions and settings are described in detail above and a quick reference table (matrix) can be found at the end of this manual. We recommend printing the matrix and storing it in the glove box!
To activate the programming mode, turn the ignition fully ON (no need to start the engine), make sure the roof and windows are FULLY CLOSED, press and hold the brake pedal, then hold down the convertible top CLOSE switch (1) until the cluster beeps once and shows a "top not secure" message (2). Now let go.
The module outputs the current function via the beeper followed by a short pause, then that function's setting via the beeper. As an example, one beep followed by a brief pause and two beeps: Function 1 is currently set to setting 2.
To select the function, tap the top switch briefly. To change the setting of the selected function, hold the switch for about 1 sec. A brief tap on the top open switch advances to the next function, a brief tap on the top close switch returns to the last one. After counting the current function and setting via the beep signals, a one second hold on the top open switch increases the setting while a one second hold on the top close switch decreases it.

To end programming mode, either turn the ignition off or hold down the top switch in either direction for a longer time (about 5 sec) until the cluster beeps once (and the same top message appears). Programming mode also terminates automatically after 60 sec. of inactivity.

• Shortcut to toggle Main Switch: With the ignition on and roof/windows fully closed as above, press the brake pedal and keep the roof CLOSE switch pressed (ignoring the first cluster beep signal) for a full 10 seconds, until the cluster beeps once again, then let go. After a brief pause the beeper will indicate the new Function 1 (Main Switch) setting (silence=OFF, 1x=ON, 2x=EXT).

Function/Setting Matrix (green fields are defaults)
Product: STHFCT1 - SmartTOP for Chevrolet Corvette Firmware: v1.20 and up
	SETTING 0	SETTING 1	SETTING 2	SETTING 3
Function 1	OFF	ON	EXT
MODULE MODE + MASTER SWITCH	Module Disabled	Module Enabled	Extended Mode READ MANUAL!
Function 2	OFF	ON
Console Switch One-Touch	Factory behavior	One-Touch operation
Function 3	OFF	ON
Console Switch Invert	Factory Behavior	Switch inverted
Function 4	OFF	HOLD	TAP	BOTH
Remote Top	No remote functions	Hold remote for 3 sec.	Tap remote 3x	Hold and Tap enabled
Function 5	OFF	HOLD	TAP	BOTH
Remote Windows	No remote functions	Hold remote for 2 sec.	Tap remote 2x	Hold and Tap enabled
Function 6	NONE	FRONT	ALL
Window positions after opening top	All windows down	Front windows up	All windows up
Function 7	OFF	ON
Hazard flashers	Disabled	Enabled
Function 8	OFF	REM	ON
Signal Beeps	No Beeps	Remote	Remote and Switch