NavLinkz RL4-MBN4 User manual

Version 15.02.2023 HW CAM (V100) / (EF2L145/V20) RL4-MBN4
Video-inserter
RL4-MBN4
Compatible with
Mercedes Benz vehicles
with Comand APS HD NTG3, Comand APS NTG4,
Audio20 NTG4 and Audio50 APS NTG4 infotainment
with 10pin LVDS connector at the monitor
Video-inserter for front- and rear-view camera
and two additional video sources
Product features
Video-inserter for factory-infotainment systems
1 CVBS Input for rear-view camera
1 CVBS Input for front camera
2 CVBS Video-inputs for after-market Video sources (e.g. USB-Player, DVB-T Tuner)
Automatic switching to rear-view camera input on engagement of the reverse gear
Automatic front camera switching after reverse gear for 10 seconds
Video-in-motion (ONLY for connected video-sources)
Video-inputs NTSC compatible

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Contents
1. Prior to installation
1.1. Delivery contents
1.2. Checking the interface compatibility of vehicle and accessories
1.3. Connectors - video interface
1.4. Dip-switch settings
1.4.1. Settigs of 8 dip –black
1.4.1.1. Activating the front camera input (dip 1)
1.4.1.2. Enabling the interface’s video inputs (dip 2-3)
1.4.1.3. Rear-view camera setting (dip 5)
1.4.1.4. Monitor selection (dip7-8)
1.4.2. Settigs of 4 dip - red
2. Installation
2.1. Place of connection
2.2. Connection scheme
2.3. Connection –LVDS switchable
2.4. Connection –10pin power/CAN cable
2.4.1. Special case –Vehicles with Comand APS NTG3 (e.g. W221 S-Klasse)
2.5. Analogue power supply
2.6. Power supply output
2.7. Connection –video sources
2.7.1. Audio insertion
2.7.2. After-market frontcamera
2.7.3. After-market rear-view camera
2.7.3.1. Case 1: Interface receives the reverse gear signal
2.7.3.2. Case 2: Interface does not receive the reverse gear signal
2.8. Connection –external keypad
3. Interface operation by external keypad
3.1. By Comand buttons
3.2. By external keypad
4. Picture settings
5. Specifications
6. Frequently asked questions
7. Technical support

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Legal Information
By law, watching moving pictures while driving is prohibited, the driver must not be
distracted. We do not accept any liability for material damage or personal injury resulting,
directly or indirectly, from installation or operation of this product. This product should only
be used while standing or to display fixed menus or rear-view-camera video when the
vehicle is moving, for example the MP3 menu for DVD upgrades.
Changes/updates of the vehicle’s software can cause malfunctions of the interface. We
offer free software-updates for our interfaces for one year after purchase. To receive a free
update, the interface must be sent in at own cost. Labour cost for and other expenses
involved with the software-updates will not be refunded.
1. Prior to installation
Read the manual prior to installation.
Technical knowledge is necessary for installation. The place of installation has to be free of
moisture and away from heat sources.
1.1. Delivery contents

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Requirements
Brand
Compatible vehicles
Compatible systems
Mercedes-Benz
C-class (W204) from 03/2007 till 02/2011,
CL-class (C216) from 01/2006 till 05/2009,
CLC-class (CL203) from 09/2008,
E-class (W212) from 04/2009 till 05/2011,
E-class Coupe (W207) from 05/2009 till 05/2011,
CLS-Coupe (C218) from 01/2011 till 05/2011,
GLK-class (X204) from 09/2008,
S-class (W221) from 10/2005 till 05/2009,
SLS (C197) from 03/2010
Comand APS HD NTG3
Comand APS NTG4,
Audio20 NTG4,
Audio50 APS NTG4
with 10pin LVDS connector on the
monitor
Limitations
Video only The interface inserts ONLY video signals into the infotainment.
For inserting Audio signals either the possibly existing factory audio-AUX-input or
a FM-modulator can be used.
In case that 2 AV sources shall be connected, a desired audio switching will
require additional electronic.
Factory rear-view camera Automatically switching-back from inserted video to factory rear-view camera is
only possible while the reverse gear is engaged. To delay the switch-back an
additional electronic part is required.
After market front camera The front camera will automatically be switched for 10 seconds after disengaging
the reverse gear. A manually front camera switching is possible by external
keypad.
Video input signal NTSC video sources compatible only.
1.2. Checking the compatibility of vehicle and accessories

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1.3. Connectors - video-interface
The video-interface (daughter PCB) converts the video signals of connected after-market
sources in a factory monitor compatible picture signal which is inserted in the factory
monitor, by using separate trigger options.
1.4. Dip-switch settings
1.4.1. Settings of 8 dip - black
Some settings have to be selected by the dip-switches on the
video interface.
Dip position down is ON and position up is OFF.
*The front camera will automatically be switched for 10 seconds after disengaging the
reverse gear (see following information).
After each Dip-switch-change a power-reset of the Video Interface has to be performed!
Dip
Function
ON (down)
OFF (up)
1
Front camera
enabled*
disabled
Power supply
output
(red wire)
+12V (max. 3A) when reverse gear
is engaged incl. 10 seconds delay
and +12V by manual switching to
front camera by keypad
+12V (max. 3A) ACC
2
CVBS AV1-input
enabled
disabled
3
CVBS AV2-input
enabled
disabled
4
No function
Set to OFF
5
Rear-view cam type
after-market
factory or none
6
No function
Set to OFF
7
Monitor
adjustment
Refer to chapter 1.4.1.4. (Monitor adjustment)
8

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1.4.1.1. Activating the front camera input (dip 1)
If set to ON, the interface switches for 10 seconds from the rear-view camera to the front
camera input after having disengaged the reverse gear. In addition, a manual switch-over to
the front camera input is possible via keypad (short press) from any image mode.
Description of the front camera power supply: see chapter “Power supply output”.
1.4.1.2. Enabling the interface’s video inputs (dip 2 and 3)
Only the enabled video inputs can be accessed when switching through the interface’s video
sources. It is recommended to enable only the required inputs, disabled inputs
will be skipped when switching through the video-interfaces inputs.
1.4.1.3. Rear-view camera setting (dip 5)
If set to OFF, the interface switches to factory picture while the reverse gear is engaged to
display factory rear-view camera.
If set to ON, the interface switches to its rear-view camera input „V4 Reverse“ while the
reverse gear is engaged.
1.4.1.4. Monitor adjustment (dip 7 and 8)
Dip 7 and 8 are for monitor-specific video settings which cannot be predicted as even within
the same head-unit version, the monitor specifications may vary.
In the event of a poor quality image with the following settings, also try the dip switch
setting of the 4th (additional option).
Fahrzeug/Navigation
Dip 7
Dip 8
7inch 800x480 display
OFF
OFF
5.8inch 480x240 Display
OFF
ON
5inch 280x100 Display
ON
OFF
Additional option
ON
ON
Note: Dip 4 and 6 are out of function and have to be set to OFF.
After each Dip-switch-change a power-reset of the Video Interface has to be performed!
1.4.2. Settings of 4 dip - red
By using the Dip-switches, the factory Head-unit or vehicle can be chosen which the
interface will be connected to.
Dip position down is ON and position up is OFF.
Set all dip switches to off
Vehicle/Navigation
Dip 1
Dip 2
Dip 3
Dip 4
All vehicles
OFF
OFF
OFF
OFF

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2. Installation
To install the interface, first switch off the ignition and disconnect the vehicle’s battery.
Please read the owner`s manual of the car, regarding the battery`s disconnection! If
required, enable the car`s Sleep-mode (hibernation mode)
In case the sleep-mode does not succeed, the disconnection of the battery can be done
with a resistor lead.
As with any installation of retrofit equipment, a stand-by test is neccessary after the
installation of the video interface, to ensure that the unit also switches off after reaching
the vehicle‘s sleep mode.
Before the final installation, we recommend a test-run of the interface. Due to changes in
the production of the vehicle manufacturer, there’s always the possibility of
incompatibility.
2.1. Place of connection
The video interface has to be connected on the rear-side of the vehicle’s monitor (picture
signal) and on the rear-side of the vehicle’s head-unit (Power and CAN at the Quadlock).

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2.2. Connection scheme

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2.3. Connection –LVDS switch
Connect the female 10pin connector “To interface” of the LVDS switch to the video
interface’s male 10pin connector.
Connect the female 10pin connector of the factory harness to the male 10pin
connector “Monitor Cable In” of the LVDS switch (Pay attention to correct pin
arrangement).
Attention: The angle position of the factory female 10pin LVDS connector’s cable
may vary and moreover the connection isn’t non-interchangeable!
Pay attention to a correct connection of the 10 pins inside!
Connect the female 10pin LVDS connector to the previously become free 10pin LVDS
connector of the factory monitor

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2.4. Connection –10pin Power / CAN cable
Power and CAN must be connected to the quadlock on the back of the head unit!
No liability for vehicle wire colors and pin definition!
Possible changes by the vehicle manufacturer. The given
information must be verified by the installer.
Connect the enclosed 10pin Power / CAN cable’s female10pin connector to the male 10pin
connector of the video interface.
Connect the single grey wire „CAN LOW“ of the 4 cables to the vehicle’s CAN low wire and
isolate the connection
Connect the single blue wire „CAN HIGH“ of the 4 cables to the vehicle’s CAN high wire and
isolate the connection
Connect the single red wire to stabile +12V terminal 30.
Connect the single black cable to the vehicle’s negative Ground.
Cable colour
Assignment
●●Red/Blue
+12Volt Permanent 15
●Brown
Ground Pin 12
●●Brown/Red
CAN HIGH Pin 11
●Brown
CAN LOW Pin 9