Category Archives: In Car Entertainment

Volkswagen Media Device Interface (MDI)

MDI
MDI

The Media Device Interface (MDI) offers support for USB devices (memory sticks and hard drives), iPod integration and Aux In along with displaying ID3 tags over the CANbus to the MFD and the RCD310, RCD510 and RNS510 headunit. The unit is available for the Passat which mounts in the glovebox and the Golf which mounts in the centre console replacing the 6 stacker cd changer. It is possible to mount the unit elsewhere in the car.

UPDATE: Volkswagen have released a retrofit kit that comes without the additional trim for the cd changer mounting and is designed for mounting behind the dash. See here for further information.

  • Module with USB cable for Golf/Passat/Jetta: Part Number 5N0 035 341 B (5N0035341 B)  – 1stvwparts.com USD$255.86
  • Module with USB cable for Tiguan: Part number 5N0 035 341 (5N0035341) 1stvwparts.com USD$300.94)
  • iPod cable: Part Number 000 051 446 C (000051446C)  – 1stvwparts.com ~USD$51
  • AUX in cable: Part Number 000 051 446 D (000051446D)
  • Extension cable for MDI interface 000 051 447 (000051447)

If you want to install the unit into the cd changer location on a GTI with Anthracite trim that doesn’t have a changer installed in the console between the seats you will need the following parts

  • CD Changer Center Console: Part Number 1K0 863 323A 71N (1K0863323A71N)
  • CD Changer Insert: Part Number 1K0 863 328A 71N (1K0863328A71N)
  • CD Changer Air Duct: Part Number 1K0 864 255C (1K0864255C)
MDI installed in CD Changer Location
MDI installed in CD Changer Location

To remove the CD Changer housing to make the MDI easier to mount (Glovebox for example) remove the two T20 screws and then press down on the two clips on the unit to release it.

Pinouts on Media Device Interface (MDI), Bold connections only used if CD changer being retained.

Pin 1: Ground
Pin 2: CAN Low
Pin 3: not used
Pin 4: NFR+/AUX R+
Pin 5: NFL+/CD Changer pass thru
Pin 6: NFR+/CD Changer pass thru
Pin 7: 12V
Pin 8: CAN High
Pin 9: NFL+/AUX L+
Pin 10: NF-/AUX –
Pin 11: NF-/CD Changer pass thru
Pin 12: Shield for CD Changer pass thru cable

Make custom harness for connecting to headunit

  • 2m of 2 conductor shielded wire
  • 2m of unshielded twister pair
  • 4m of 18 guage wire
  • 5 x 000 979 009 repair wire
  • 8E0 972 112 housing

Place two connectors on the UTP for CAN High and CAN Low, two connectors on the 18guage wire for 12V and Ground and two connectors to the 2 conductor shielded wire. This is the end for the MDI and for the end on the head unit side you can splice these wires or use a bluetooth or similar harness.

MDI Interface    Headunit

Pin 1 Ground – T16/12
Pin 2 CAN Low – T16/10
Pin 4 NFR+/AUX R+ – T12B/7
Pin 7 12V – T16/15
Pin 8 CAN High – T16/09
Pin 9 NFL+/AUX L+ – T12B/1
Pin 10 NF-/AUX- – T12B/2

Add Auxiliary input with MDI fitted.

  • Aux in port: Part number 1K0 035 724B
  • 3 wire connector housing: Part number 1C0 973 119B
  • Terminals (2): Part number 000 979 009

Pin 1 of the 3 pin connector (R+) goes to Pin 4 of the MDI
Pin 2 of the 3 pin connector (-) goes to Pin 10 of the MDI
Pin 3 of the 3 pin connector (L+) goes to Pin 9 of the MDI

Kufatec sell this unit as a kit, click here for further information.

When using the USB with removable hard drive ensure that the drive is using a FAT32 file system, other types such as NTFS will not be usable.

Volkswagen Skoda Bluetooth Car Kit Install in Volkswagen Golf

VW / Skoda Bluetooth UnitVolkswagen in Australia and other countries offers a parrot car kit as their “OEM” car kit and don’t offer the excellent VW/Skoda fully integrated unit. The units are available from a number of sources in Europe and the US.

Part numbers for the kit include

  • 1Z0 035 729 (1Z0035729) – Interface Unit (older models don’t support the RNS 510)
  • 8P0 035 503 E (8P0035503 E) – Bluetooth Antenna
  • 3B0 035 711 B (3B0035711 B) – Microphone
  • 1Z0 971 813 62U (1Z0971813 62U – Covering Black or
  • 1Z0 971 813 3AU (1Z0971813 3AU) – Covering Ivory
  • N90 946 001 (N90946001) – Expanding Nut x2
  • N90 817 003 (N90817003) – Torx Screw x2
  • 6U0 819 055 (6U0819055) – Clip x2
  • Wiring loom – Strongly recommend a full plug and play unit

Bluetooth unit prior to installation. The 1Z0035729B as shown is compatible with the RNS 510.

Tools required for the install include


Wiring Harness

There are a few options here to connect the bluetooth unit to the factory harness behind the headunit.

  • purchase a fully built plug and play harness
  • build an inline adapter and connect to the harness that comes with the kit so you have a plug and play harness as above
  • use connector housings and repair wires to plug inline with the factory headunit harness
  • cut and splice (not recommended)

Plug n Play Harness

A problem with the Plug n Play harnesses is that they don’t have compliant CAN bus cabling which has to have a twist maintained throughout. The solution is to replace it with CAN bus repair wire.

Performing repairs on CAN bus wiring

Inline Adapter

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Connector housing and repair wires

This process involves joining the connectors to the harness and doesn’t involve adding bulky adaptors or cutting the harness.

  • 1 x 000 979 133 (000979133) – 1mm repair wire – CAN bus Hi and Lo female.
  • 1 x 000 979 134 (000979134) – 1mm repair wire – CAN bus Hi and Lo male.
  • 1 x 000 979 225 (000979225) – 2.5mm repair wire – 12v and ground female.
  • 1 x 000 979 226 (000979226) – 2.5mm repair wire – 12v and ground male.
  • 4 x 191 972 701 (191972701) – Housing
  • 4 x 191 972 711 (191972711) – Connector Housing

Build harness using connector housings and repair wires for Volkswagen Skoda Bluetooth Install

Splice

Splicing the cables like shown here is not recommended.

Connection behind headunit

Bluetooth Interface Unit

Remove the two carpet squares that are premarked under the drivers seat using a small knife, don’t cut too deeply or you will cut into the paint on the sheet metal underneath. Insert the two plastic plugs and screw the bracket into place. Note that the bluetooth unit in this photo is upside down. Before you slide the unit in bend the metal bracket inwards so that it holds the unit tightly to prevent rattles.

Next remove the sill panel trim on the right hand side of the car, this only has to be removed for the front door and requires the clips to be removed so the edge of the carpet can be accessed.

Volkswagen Golf Sill Panel Trims – Removal and Installation

The next step required the installation of the microphone.

Volkswagen Skoda Bluetooth Car Kit Microphone Install in Volkswagen Golf

Remove the dash vent (or tray on non Climatronic units) by following this guide.

Volkswagen Golf Dash Panel Centre Vents – Removal and Installation

Remove the trim around the head unit using this guide.

Volkswagen Golf Centre Dash Panel Trim – Removal and Installation

Remove the headunit by unscrewing the 4 screws and carefully sliding it out, watch out when the unit is released as it could drop and scratch the climatronic.

Release the cables from the rear of the headunit and put the headunit aside safely.

The unit that I installed came from the UK, contact the owner of this site to purchase a kit.

Another installation guide is available from his website.