InCarTec 29-UC-050-MB2 Mercedes NTG2 Steering Wheel Control User Manual

InCarTec 29-UC-050-MB2 Mercedes NTG2 Steering Wheel Control

Product Information

The 29-UC-050-MB2 Mercedes NTG2 Steering Wheel Control is an interface box designed for use with Mercedes vehicles that have original NTG2 head units. It is compatible with a range of Mercedes models including A-Class, B-Class, C-Class, CLK, E-Class, GL, ML, R-Class, SLK, Sprinter, Viano, and Vito. The interface box allows for the retention of steering wheel controls when upgrading to an aftermarket head unit.

The interface box has various input and output connections including handbrake output, CAN high, illumination output, SWC data output, 12V ignition output, 12V permanent input, SWC ground output, CAN low, reverse 12V output, speed pulse output, SWC RES output, and ground input. The interface box also has a green LED that flashes to indicate vehicle recognition and head unit compatibility.

Product Usage Instructions

1. Connect the cables to the interface box and the car. Connect the patch lead to the 4 pole black connector and the two 8 pin ISO connectors and the patch lead to the aftermarket head unit. The green LED on the interface will repeatedly flash once followed by a pause.

2. Set the interface to the brand of head unit you are fitting by using the VOL + and VOL – buttons on the car’s steering wheel to adjust the number of flashes between pauses. Consult the table in the user manual to determine the correct number of flashes needed for each head unit brand. Press SEEK+ to confirm and the LED will turn solid green.

3. If fitting a Chinese or resistive programming head unit, set the number of flashes to 6 and confirm the setting by pressing SEEK+. Press the reset button 5 times to enable prolonged pressure on the steering controls. Use the radio’s resistive learning menu to learn and memorize the buttons, waiting at least 5 seconds between each button press. When finished, turn the ignition off and on and the LED will return to solid green.

4. To reprogram the interface for another head unit brand or if the LED is solid green before setting the head-unit brand, push the reset button and hold it for 10 seconds. Release the button and the LED should start flashing green.

5. If fitting an Alpine head unit, set jumper J1 by moving it to
   position 1-2 on the PCB inside the interface box.

6. If necessary, adjust the jumpers on the PCB inside the interface box to suit the specific vehicle and head unit being used. The default jumper settings will usually suffice.

7. Connect the reverse and speed pulse cables only if required. The reverse output (blue wire) is needed for fitting a reverse camera to the new head unit, while the grey speed pulse wire is needed for head units with built-in satellite navigation or some Kenwood models. If not required, these cables can be insulated and ignored.

For Mercedes vehicles with origianl NTG2 head units
A-Class (04-18), B-Class (05-18), C-Class (00-14), CLK (02-10), E-Class (09-16), GL (06-16), ML (97-15), R-Class (05-13),
SLK (11-16) Sprinter (06-18), Viano (14-20) and Vito (14-20)

1. Yellow/White| Handbrake Output| 8. Black| SWC Ground Output
---|---|---|---
2. Green| CAN HIGH| 9. White| CAN LOW
3. Orange| Illumination Output| 10. Blue| Reverse 12v Output
4. Brown| SWC Data Output| 11. Grey| Speed Pulse Output
5. Red| 12V Ignition Output| 12. Purple| SWC RES Output
6. N/A|  | 13. N/A|
7. Yellow| 12v Permanent Input| 14. Black| Ground Input

1. Connect the cables to the interface box and to the car, and the patch lead to the 4 pole black connector (this is attached to pins 4, 8 and 12 of the control box). Connect the two 8 pin ISO connectors and the patch lead to the aftermarket head-unit. When connected to the car the interface will automatically recognise the vehicle. The green LED on the interface will repeatedly flash once followed by a pause.
2. You need to set the interface to the brand of head unit you are fitting. The number of flashes between pauses corresponds to the make of head unit, see the table below for the number of flashes needed for each one. Press the VOL + and VOL – buttons on the cars steering wheel to increase or decrease the number of flashes. When you have the correct number of flashes, press SEEK+ to confirm and the LED will go to a solid green.

For Chinese and resistive programming head-units.
Set the number of flashes to 6. Confirm the setting by pressing SEEK+. Now press the reset button 5 times, the interface will start to flash yellow ( this allows prolonged pressure on the steering controls ). Using the radios resistive learning menu you can now learn and memorize the buttons. Wait at least 5 seconds between each button press. When finished turn the ignition off and on and the LED will go back to solid green. To reprogram the interface for another head unit brand or if the light is solid green before you have had the chance to set the head -unit brand. Push the reset button in and keep it pushed in for 10 seconds and then release the button. At this point the LED should start to flash green.

Resistive 2 wire Resistive 3.5mm jack

7| Sony 3.5mm jack

If fitting an Alpine, please set jumper J1, please see overleaf.

Setting the Jumpers
The Jumpers are on the PCB inside the interface box. By default they are set up to suit most vehicles and should usually only need to be changed if fitting an Alpine head unit. The jumpers are set by moving them between positions 1 and 2 or positions 2 and 3.

The Reverse and Speed Pulse cables
The reverse output (blue wire) is only needed when fitting a reverse camera to the new head unit. The grey speed pulse wire is needed when fitting head units with built in satellite navigation and some Kenwoods. If not required these can be insulated and ignored. Make sure the patch lead is connected to the 4 pin plug on the interface and the input on the new head unit. 29-UCCAB patch lead wiring information – shown from wire entry side of connector:

29-UCCAB-001 Alpine (CBL007UNA22)
29-UCCAB-007 Pioneer/Sony (CBL007UNPI12) BLACK to BASE
WHITE to RING (13.7k resistor inline on 29-UCCAB-001 for Alpine) RED to TIP

29-UCCAB-003 Clarion (CBL07UNJV12)
BLACK to BASE
RED to TIP

29-UCCAB-005 Kenwood/JVC (CBL007UNPN21)
BROWN single wire, connect to blue/yellow wire on Kenwood/JVC marked “System Remote Control” or “Steering Wheel Remote Input”

29-UCCAB-000 or 29-UCCAB-016
Resistive programming and Chinese (CBL007UNCC11) Connect the two wires (BLACK AND PURPLE) or the 3.5mm jack to the steering wheel control inputs on the head unit. If head unit uses 2 wire system then connect to SWC1 and SWC Ground or KEY1 and KEY Ground wires. The steering wheel controls will need to be programmed into the head unit after setting the number of flashes. See overleaf.

Connect the 3.5mm jack plug on these patch leads to the SWC or remote input on the after market head unit.

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