Technical Service Bulletin
91 MMI3G+ Audi connect only reaches 2G service - Telephone module replacement instructions for
A4,A5,A5 cab,Q5,Q7,A8
91 15 06 2039476/4 July 28, 2015. Supersedes Technical Service Bulletin Group 91 number 15-01 dated June 30,
2015 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A4, A5,
A5 Cabriolet, Q5

2013

All

Audi connect

A8

2010 - 2013

All

Audi connect

Q7

2012 - 2013

All

Audi connect

Condition
REVISION HISTORY
Revision

Date

Purpose

4

-

Revised header data (Updated PR codes to exclude pull-ahead A8)
Revised Condition (Updated affected areas; added Tip about A8)
Revised Warranty (Added time for A8; added time for GFF for all vehicles)

3

6/30/2015

Revised Condition (Updated affected areas)

2

5/15/2015

Revised Condition (Updated affected areas)
Revised Service (Completely revised “Software Updates” section)

The customer complains that the Audi connect online service in their 2011-2013 A8, 2012-2013 Q7, or 2013 A4,
A5, A5 cabriolet, or Q5 vehicle only reaches 2G service when in the following metropolitan areas:

State

Metropolitan Areas
(Including surrounding areas)

State

Metropolitan Areas
(Including surrounding areas)

Arizona

Nogales

Kentucky

Louisville

California

Los Angeles; Madera

Louisiana

Baton Rouge

Colorado

Pueblo

Missouri

St. Louis; Kansas City

Florida

Miami

Mississippi

Biloxi

Georgia

Columbus; Savannah; Griffin

New Mexico

Albuquerque

Idaho

Boise

Oklahoma

Oklahoma City

© 2015 Audi of America, Inc.

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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of
Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior
expressed written permission of the publisher.

Technical Service Bulletin
Illinois

Chicago

South Carolina

Charleston

Indiana

Indianapolis

Texas

Houston; El Paso; Laredo

Kansas

Kansas City

Virginia

Roanoke

This bulletin applies only to model year 2011-2013 A8, 2012-2013 Q7, and 2013 A4, A5, A5 cabriolet, and
2013 Q5 vehicles. For 2012-2013 A6 and A7 vehicles see TSB 2039515.
The model year 2014 A8 is not included in this repair. Model year 2014 was the last year before the A8
product improvement and ElsaPro may classify these vehicles as model year 2013 because these vehicles are the
same from a technical and design standpoint. But unlike the model year 2013 vehicles, the model year 14 vehicles
already have the updated telephone module in the MMI.

Technical Background
Recently, T-Mobile (the service provider for Audi connect) has repurposed some of the GSM spectrum (3G on
2100Mhz band) to maximize 4G LTE coverage in certain metropolitan areas.
Devices that do not support 3G service on the 1900MHZ band (including MMI main units of the vehicles to which
this bulletin applies) will only receive 2G service when the switch is completed.
The change currently only affects the markets listed above, but will affect other markets in coming years. This
bulletin will be updated to include these markets as changes occur.

Production Solution
A telephone module that supports 3G service on the 1900MHZ band was installed beginning with model year 2014
vehicles. No repairs are necessary for model year 2014 vehicles and later.

Service
The telephone module can be replaced with an upgraded module that supports the additional 3G GSM spectrum.
Tip: The upgraded telephone module will only allow 3G to be received again in markets where T-Mobile has
repurposed the GSM spectrum for 4G LTE. It will not allow Audi connect to receive 4G LTE, which is not possible
with the MMI3G+ hardware.

© 2015 Audi of America, Inc.

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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of
Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior
expressed written permission of the publisher.

Technical Service Bulletin
Before starting the repair:
• Review the Required Parts and Tools section of this bulletin.
• Obtain the telephone module retrofit kit listed in the Required Parts and
Tools section of this bulletin.
• Obtain the ZUG K0814 update on SD card listed in the Required Parts and
Tools section of this bulletin.
• Obtain the telephone driver script from ServiceNet
(ServiceNet>>AUDI>>Technician References>>Audi MMI Scripts). The file
name is MMI3GP_UMTS_Driver_Script.zip. Extract the three files to a
separate SD card. Ensure that all three files are extracted to the root
location on the SD card (do not store the files in a folder on the SD card
and do not copy the zip to the SD card; files must be extracted).
• Verify that the VAS6613 ESD work surface contains three grounding
straps. The repair cannot be completed without all three grounding straps,
including the ESD mat.
• Watch the “91 MMI3GP Telephone Module Replacement Instructions for
A4, A5, A5 CAB, Q5, Q7, and A8” video at
https://audi-external.kzoplatform.com:443/swf/player/300 (Figure 1). (See
TSB 2039206 for more information about viewing videos.)

Figure 1. QR code for viewing the
video with a QR code reader on
phones and tablets. Alternatively,
the video can be accessed
through computer internet
browsers at the link provided in
this bulletin.

Repair Procedure:
Note:
This exchange of the telephone module should only be performed in a clean environment due to sensitive
electronics. The repair should not be performed in a workshop environment.

1. Remove the MMI main unit from the vehicle according to the instructions in the Elsa Repair Manual.
• For Q7: Electrical System>>Communication>>MMI Infotainment (USA)>>Information Electronics Control
Module 1 J794, Removing and Installing
• For A4, A5, A5 cabriolet, Q5, and A8: Electrical System>>Communication>>91
Communication>>Infotainment System>>Information Electronics Control Module 1 J794, Removing and
Installing

2. Prepare for the ESD work surface by cleaning the work area of all loose debris and then drying the area with a
towel. Doing so ensures that no debris will be rolled into the mat when it is rolled up after use, which could
cause long-term damage to the ESD work surface.

3. Place the ESD anti-static mat onto the surface. Ensure that all three grounding straps are securely strapped to
the ESD mat.

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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of
Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior
expressed written permission of the publisher.

Technical Service Bulletin
4. Ground the ESD mat by plugging the 110V grounding
strap into a wall socket or power strip (Figure 2). If a
power strip is used, it must be plugged into a grounded
wall outlet. (See attached user instructions for VAS6613
titled “VAS6613 ESD Workspace Guide.pdf”.)

Figure 2. VAS6613 ESD work surface grounding
plug.

5. Ground yourself by placing the elastic strap around your
wrist. Make sure it is securely touching your skin. It
cannot be loose-fitting or over your shirt cuff (Figure 3).

Figure 3. VAS6613 ESD work surface grounding
wrist strap.

© 2015 Audi of America, Inc.

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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of
Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior
expressed written permission of the publisher.

Technical Service Bulletin
6. Ground the MMI main unit by placing an alligator clip on
the back, ensuring that it makes contact with the metal
housing of the main unit. The most secure location is at
the MOST connector (Figure 4).
A foam block can be used as a spacer under the main
unit to keep the grounding strap connected.

Figure 4. VAS6613 ESD work surface grounding
device clip.

Warning:
Your wrist, the ESD mat, and the main unit must remain grounded during the entire process.

7. Remove the seven screws that are holding the MMI top
cover in place (Figure 5).

Figure 5. MMI main unit with screw locations for top
cover indicated by the red arrows.

© 2015 Audi of America, Inc.

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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of
Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior
expressed written permission of the publisher.

Technical Service Bulletin
8. Break the white warranty seal on the back of the main
unit (Figure 6).