Technical Service Bulletin
91 MMI3G+ GPS navigation location inaccurate or navigation takes a very long time to aquire location
91 16 56 2040406/5 July 7, 2016. Supersedes Technical Service Bulletin Group 91 number 15-22 dated October
16, 2015 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A4, A5, A5
Cabriolet, RS 5, RS
5 Cabriolet, Q5, A6,
A7, and A8

2013 - 2014

All

MMI3G+

A4

2015

A5

2015

000001 - 029734

MMI3G+

RS 5

2015

900001 - 900909

MMI3G+

A5 Cabriolet

2015

000001 - 005135

MMI3G+

RS 5 Cabriolet

2015

900001 - 900262

MMI3G+

Q5

2015

000001 - 066126

MMI3G+

A6, A7

2015

000001 - 031274

MMI3G+

RS 7

2015

900001 - 999999

MMI3G+

A8

2015

000001 - 023803

MMI3G+

A000001 - A063835
N000001 - N020338

MMI3G+

Condition
REVISION HISTORY
Revision

Date

Purpose

5

-

Revised Service (Updated ZUG levels and software numbers)
Revised Required Parts and Tools (Updated media part numbers)

4

10/16/2015

Revised Technical Background (Completely revised)
Revised Service (Added information about incorrect ETKA part number
suggestions; revised entire section for clarity)

3

8/25/2015

Revised Technical Background (Added information about antenna
hardware failure)
Revised Service (Completely revised)
Revised Warranty (Completely revised)
Revised Required Parts and Tools (Added cable and antenna part
numbers)

© 2016 Audi of America, Inc.

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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
• When the vehicle is started, the GPS location or vehicle
direction indicated on the MMI navigation map does not
match the vehicle’s actual location or direction of travel for a
long period of time (often as long as 10 minutes):
• The issue occurs in open sky, with no large buildings
obstructing the sky view.

Figure 1. No satellite reception.
• The issue is intermittent, but it can occur for long periods of time during a single day. The issue resolves itself
intermittently.
• The issue typically happens on very warm days when the HVAC system blower is at a medium to high
setting (auto or manual), with air being directed out of the panel vents.
• When the issue occurs, the GPS navigation system satellite reception shows 0 satellites. Due to the
infrequency of the issue, this might not be verifiable. (To view the number of satellites being received, go to
Nav >> Route >> Select Current Position (first item in list) and scroll up (Figure 1)).
• No DTCs related to the GPS antenna or MMI system are present.
• The vehicle is an A4 (including S4 and allroad variants), A5 (including Cabriolet, S5, and RS 5 variants), A6
(including S6 variant), A7 (including S7/RS 7 variants), A8 (including long wheelbase, S8, or W12 variants) or
Q5 (including SQ5 and hybrid variants). (Q7 and Q3 vehicles are not affected by this condition. See TSB
2030465, 91 MMI3G+ GPS navigation location inaccurate or navigation takes a very long time to acquire
location (Q7 or Q3) for Q7 and Q3 vehicles.)
Tip: If the sky view is blocked because the vehicle is in a parking structure, below ground, or next to large
buildings, it is normal for the GPS location or vehicle direction indicated on the MMI navigation map to not match
the vehicle’s actual location or direction of travel. The blocked sky view prevents the vehicle from receiving
satellites, and the system may be temporarily lost (for example, the system may show the wrong location on the
map screen) until four satellites can be received. This behavior can last for several minutes even in clear sky view
when the vehicle is exiting a parking structure or underground structure. The MMI can take up to 5-10 minutes to
sufficiently get a 3D-GPS fix once the vehicle has clear view of the sky. This is a normal condition, and is not
related to the condition described above. Replacing the MMI main unit, replacing the GPS antenna, or updating
the MMI software will not change this behavior.

© 2016 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
Technical Background
For MY 2013 Vehicles:
A potential software failure or internal hardware failure of the MMI main unit can cause the GPS signal to be
blocked, even if good reception is available (clear sky with clear view of sky). The failure can happen at start-up or
while the vehicle is being driven. The issue typically starts when the vehicle is driven on curvy or circular roads,
driven in circles (such as when driven around a parking lot), or driven on or off an expressway.
For MY 2014-15 Vehicles:
A potential internal hardware failure of the MMI main unit can cause the GPS signal to be blocked, even if good
reception is available (clear sky with clear view of sky). The failure can happen at start-up or while the vehicle is
being driven. The issue typically starts when the vehicle is driven on curvy or circular roads, driven in circles (such
as when driven around a parking lot), or driven on or off an expressway.
For All Model Years:
Additionally, there is a potential antenna hardware failure that can affect some vehicles. It is important to check the
antenna before replacing the MMI main unit. This antenna hardware failure will produce a static condition of no
satellite reception, which is the same behavior as the other failure modes.

Production Solution
• New software was introduced in production starting calendar week 22 of 2013 (start of model year 2014
production).
• New hardware was introduced in production starting with calendar week 45 of 2014 (mid-model year 2015
production).
• New GPS antenna hardware introduced in production starting with calendar week 45 of 2014 (mid-model year
2015 production).

© 2016 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
Service
Follow one of the repair options below. Note that replacing the MMI hardware in Repair Option 3 is not always
necessary. Needless replacement of the MMI hardware without identification of the true root cause can create an
unnecessary repeat repair and additional frustration for the customer.

Repair Option 1 (MY2013):
Updating the MMI software for model year 2013 vehicles with a GPS location concern but with good
satellite reception at the time of service.
If the vehicle arrives with good satellite reception, shows at least four satellites as being received, and is a model
year 2013 vehicle:
• Check the MMI ZUG version in the MMI (Menu>>Setup MMI>>Software Versions).
• If the value shows anything less than K0715 (such as P0566), proceed to step 1 and update the MMI
software only.
• If the software is already updated to K0715 or later (such as K0814), skip steps 1 and 2 below and proceed
to “Repair Option 3: Replacing the MMI main unit”. The software fix was introduced in P0715/K0715 and
updating the MMI software does not apply this scenario. (K=Kunden or Customer software release” and P =
Production software release.)
1. Update the MMI software using ZUG K0942 (see TSB 2030465: 91 MMI 3G+ Various technical Issues (K0942
ZUG update; supersedes K0814 update)).
2. Perform the required SVM feedback according to the instructions in TSB 2030465:
• A4, A5, Q5 use SVM code 3GPUS942AU3G
• A6, A7, A8 use SVM code 3GPUS942AU
The required SVM code is also included in the ZUG K0942 update medium.

Repair Option 2 (All Model Years):
Checking satellite antenna for all vehicles with static “0” satellite reception at the time of service or
verified by the customer.
If the vehicle arrives with a static condition of “0” satellite reception, or was verified by the customer using the
MMI, first verify that the antenna is not the root cause of the condition:
1. Move the vehicle outside to a clear view of the sky.
2. Allow the car to sit with the ignition on for at least five minutes, then use the table below to check Measured
Value Blocks 97, 107, and 192 in the information electronics control module 1, J794 (address word 5F).
The “Good Values (Bad Values)” column shows the known good values with the known bad values in
parentheses. The GPS Status, GPS 3D Fix, and number of Received/Used Satellites will be the most helpful
in determining if the MMI is receiving GPS information from the satellites.

© 2016 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
Measured Value
Block

Name

Good Values (Bad Values)

MVB 97.1

Received Satellites

4-16 (0)

MVB 97.2

Used Satellites

4-16 (0)

MVB 97.3

Code-locked satellites

4-16 (0)

MVB 97.4

Phase-locked satellites

4-16 (0)

MVB 107.1

GPS Status

Valid (Not Valid)

MVB 107.3

GPS 3D Fix

4 = 3D Fix (0 or 1 = No GPS data; 2 = No
Fix; 3 = 2D Fix, 255 = Not connected)

MVB 192.1

0 Satellite Condition Start
Date

This will show the date when the “0”
satellite condition started.

MVB 192.2

0 Satellite Condition Start
Time of Day

This will show the time of day when the “0”
satellite condition started.

3. If it is determined that the antenna is potentially faulty, obtain a known good GPS antenna and coaxial cable to
verify that they will fix the issue. Attach the antenna coaxial directly to the back of the MMI main unit using a
service repair coaxial cable (see ETKA using part number 000 098 650). There are varying lengths that can be
purchased. For instance, part number 000 098 650 = 300mm/1ft and part number 00 098 658 =
7000mm/23ft). Then connect the other end of the coaxial to the test antenna (new service part).
Tip: If a C7 or B8 antenna and cable are ordered, they can be used as a test setup for all Audi models
with MMI3G+. There is no need to order a different test antenna for each model because the internal design is
the same for all vehicles for MMI3G+. The only difference is the size and mounting scheme of the different Q5
and A8 antennas.
4. Check the MMI to see how many satellites are received with the new antenna when the car is parked outside
with clear view of the sky. To view the number of satellites being received, go to Nav >> Route >> Select
Current Position (first item in list) and scroll up. If needed, recheck the Measured Value Blocks and verify the
values change to good values.
5. If it is determined the antenna is faulty, replace the GPS antenna using the parts listed in the parts table below.
If the coaxial cable is replaced, order the correct cable adapter with the 90 degree bend in the connector (See
ETKA).
Note:
For A4, A5, A6, and A7 vehicles, do not order the “K” suffix antenna, which ETKA may suggest. The “K” suffix
antenna is only used for model year 2016 A6 and A7 vehicles with XM satellite service and will not work with
model year 2013 – 2015 A4, A5, A6, and A7 vehicles with Sirius satellite service. The “J” suffix antenna must
be ordered for model year 2013 – 2015 A4, A5, A6, and A7 vehicles.

© 2016 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
Repair Option 3 (All Model Years):
Replacing the MMI main unit for any of the following conditions:
• All vehicles with “0” satellite reception at the time of service and a known good GPS antenna (not
resolved by Repair Option 2).
• Model year 2014 – 2015 vehicles with intermittent satellite reception that cannot be verified at the time
of service (but customer confirms that the Condition applies)
• Model year 2013 vehicles with the latest MMI software and intermittent GPS reception.
Perform the following repair steps for replacing the MMI main unit. Replace the MMI main unit with the part
numbers listed in the parts table below. If ETKA suggests different part numbers, ignore the suggestion and use
the part numbers in the table.
1. If the vehicle does not have K0814/P0814, update the MMI software using the latest available ZUG update (as
of calendar week 22/16, ZUG K0942 is the latest; see TSB 2030465: 91 MMI 3G+ Various technical Issues
(K0942 ZUG update; supersedes K0814 update)).
Tip: This update ensures that the MMI control panel (E380) will be able to communicate with the new
MMI main unit (J794). If the update is not performed, the MMI control panel button LED lights will flash
constantly to indicate a software incompatibility in the MMI main unit.
2. Perform the required SVM feedback according to the instructions in TSB 2030465:
• A4, A5, Q5 use SVM code 3GPUS942AU3G
• A6, A7, A8 use SVM code 3GPUS942AU
The required SVM code is also included in the ZUG K0942 update medium.

© 2016 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

Figure 2. Example of integrated circuit chip without coating (left) and with coating (right). Parts without the
coating over the integrated circuit chip are not okay and should be replaced.
3. Order a replacement MMI main unit using the applicable part number listed in the parts table below. There are
different variants of main units that have support for a SIM card slot and some variants that do not. Once the
new part arrives, check the integrated circuit chip of the GPS oscillator on the internal circuit board. The chip
should have a translucent yellow coating (Figure 2).
Some early service parts did not have the coating despite the updated hardware part number (G suffix) and