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1. Introduction

The Dension Gateway 500S BT lets you connect your USB fl ash drive, 
iPod and iPhone to your original car radio, providing music playback 
and menu based control through your vehicle’s entertainment system, 
using the original controls of the car stereo. The Gateway 500S BT 
also offers Bluetooth connectivity for A2DP music streaming and 
handsfree mobile call handling via the original buttons and screens of 
your vehicle.

Package content:

• Gateway 

interface

•  Optical cable kit (MOST)
• Connector 

port

• Power 

harness

• Microphone 

(generic)

Optional accessories:

•  Lightning cradle (IP6LCRP)
•  Dension 30-pin dock cable (IPDC1GW)
•  Dension 30-pin dock cable kit (IPO5DC9)
•  iPhone Lightning to USB cable (IPLC1GW)
•  3.5 mm jack-jack cable (AUX-IN) (BLR1JJ1)
• DAB+G 

(DBG1GEN)

The Gateway 500S BT is available in 2 different hardware 
versions:

•  Single FOT (GW52MO1)
•  Dual FOT (GW52MO2)

Dual FOT version has two optical inputs: it is recommended for vehicles 
where original CD changer is available to retain that functionality 
(except in the case of the Audi MMI-2 High). 

If there is no factory CD changer, then the Single FOT version Gateway 
is suitable. On the below picture you can see the connection options:

General Installation Guide

Gateway 500S BT

The most important factors of the installation are:

• Programming
•  Gateway installation into the optical ring
•  The factory CD changer
•  The factory phone
•  The 6 DIP switches on the Gateway

2. Programming

The Gateway 500S BT emulates a CD changer and uses the car’s 
original CD changer controls to access offboard audio sources. 
Therefore it may be necessary to have the car programmed by your 
dealer in order to use the Gateway 500S BT with it.

Programming the car for Gateway 500S BT 

Audi:

No programming required

BMW (non iDrive Professional, M-ASK & CCC Profesional):

For programming we recommend to use our GEN2BME enabler tool or 
a 3rd party solution like Autologic. If you are not experienced with this, 
then please ask a service station for coding. For using all the functions 
of the Gateway you need to enable the 

“IPOD” option

 and the 

644 

phone option

 on the car.

Important notes:

•  If there is a factory phone installed, then please also go to: 

Section 6: “Phone””

•  If the software version of the car’s head unit dates before 2005, 

then please update it before programming!

G52-9202-5

Mercedes-Benz

Generally no programming is required but if there was no device on 
the the optical ring installed, then the CD changer option needs to be 
coded with the service computer.

Porsche

If there is no CD changer installed, then you need to program the CD 
changer option.

3. Device installation

After successful programming you can start with the installation.

Please note:

 Installation of the Gateway 500S BT is very complex, 

therefore please have it installed by a professional installer.

There are different installation types, all of them are basically for the 
Single FOT version Gateway, but they are also possible with the Dual 
FOT Gateway. If there is the Dual FOT version and you don’t use the 
right (CD changer side) optical input of it, then you need to put an 
optical loop on this connection. (You can create an optical loop by 
using the second optical cable of the Gateway’s package.)
The only exception is “Type 2a” where ONLY the Dual FOT version 
Gateway can be used and you apply both optical connections of the 
Gateway device.

Important note:

 When you connect the power harness please make 

sure that you feed the Gateway device with 

+12V non-switched 

constant power.

Installation Type 1(Fig. 1):

Vehicles that support two CD changers on the optical ring as an 
original function. 
• 

Audi A4/S4/RS4/A5/A6/S6/RS6/A8/S8/Q7 with MMI-2 High 
(colour) 

These vehicles allow you to select between Gateway audio sources 
and the original CD changer trough the existing car audio controls 
without using the Connector port. 

Installation:

 You add the Gateway to the optical ring as you can see 

on Fig. 1 - the MMI-2 High system will recognise it as a second CD 
changer:

Installation Type 2a (Fig. 2): 

Vehicles with an existing CD changer. 
This installation type is possible with Dual FOT version Gateways 
only. This allows you to select between Gateway audio sources and 
the original CD changer by switching between ACTIVE (Gateway) 
and BYPASS (CD changer) mode with the Connector port. (For exact 
information please read: “5. Connector port”) 

Installation

1.  First please remove the CD changer
2.  Then install the Gateway on the remaining place of the CD 

changer on the optical ring

3.  Finally install the CD changer into the second (CD changer side) 

optical input of the Gateway 

Please note:

 Vehicles that have the original CD changer in the trunk it 

is recommended to use the FOA1PO1 optical extension kit so that the 
Gateway’s hardware can be placed to the front part of the car (behind 
the radio or in the glove box).

30-pin 

dock 

cable

Connector 

port

Microphone

Gateway front view

Power 

harness

Car side 

optical input

Gateway rear view

- red wire (+12V constant power, not switched)
- black (ground)

Not in use

CD changer 

side optical 

input

Connector port

(Fig. 2)

Car side

CDC side

3.

Car side

(Fig. 1)

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