91 MIB2 High: Navigation data read error/reboots, DTC B126CF0 stored in the information electronics
control module
91 19 08 2057052/1 October 31, 2019.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A5, Q5

2018 - 2019

All

MIB2 High

A3, A6, A7,
and TT

2016 - 2019

All

MIB2 High

A4, Q7, and
R8

2017 - 2019

All

MIB2 High

Condition
Customer states:
 The MMI shows the
message “Read error
occurred when
accessing the
navigation data” after
initialization (Figure 1).
 The MMI reboots
constantly.

Figure 1. The error message is shown on initialization.
Workshop findings:
The following DTC may be stored in the information electronics, J794 (address word 005F):
 DTC B126CF0 (Navigation system Navigation database malfunctioning).

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© 2019 Audi of America, Inc.
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 Background
If the navigation map database is corrupted during an online update, the message from Figure 1 is displayed and
the navigation system is unavailable. The DTC B126CF0 is entered into the information electronics, J794
(address word 005F).

Production Solution
Not applicable.

Service
1.

In ODIS, please select
“OBD” (1). Then select the
005F – Information Control
Unit 1 (2) (Figure 2).

Figure 2. Select the 005F module.

Page 2 of 7
© 2019 Audi of America, Inc.
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.

2,

In the drop-down menu
“Control module OBD”,
select “Basic Settings” (3),
then click on the arrow to
the right (4) (Figure 3).

Figure 3. Select the basic settings.
3.

In the list on the left, select
“[VO]_HDD_Partition_For
mat” (5), then click the
single right-pointing arrow
in the center (6) (Figure 4).

Figure 4. Select the basic setting.

Page 3 of 7
© 2019 Audi of America, Inc.
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.

4.

Hit the “Next” button on the
bottom right (7) (Figure 5).

Figure 5. Select next.
5.

Make sure that the value
for the parameter
“[LO]_Routine Control
Option Partition” says
“Navigation data base” (8),
then click “Next” (9)
(Figure 6).
Tip: Make sure that
the “Navigation data base”
is selected. An incorrect
selection in this step might
render the control
module/unit nonviable.

Figure 6. Navigation data base partition.

Page 4 of 7
© 2019 Audi of America, Inc.
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.

6.

Click “Next” one more time
(10) (Figure 7).

Figure 7. Select next.
7.

Select “Start” (11). The
basic setting should
complete within a few
seconds (Figure 8).

Figure 8. Execute the basic setting.
8.

Update the navigation database according to the steps in TSB 2037809: “91 How to update MMI MIB
navigation map – potential customer concerns”. This will reinstall a working navigation database.

Page 5 of 7
© 2019 Audi of America, Inc.
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.

Warranty
Claim Type:

 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If the vehicle is outside any warranty, this Technical Service Bulletin is
informational only.

Service Number:

9196

Damage Code:

0039

Labor Operations:

Format the Navigation Database Partition via
OBD

0151 0000

15 TU

Program infotainment control unit & Test
Functionality

9196 0299

70 TU

GFF

0150 0000

Time stated on
the diagnostic
protocol (Max 50
TU)

Road test prior to the service procedure

No allowance

0 TU

Road test after the service procedure

No allowance

0 TU

Diagnostic Time:

Claim Comment:

As per TSB #2057052/1

All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures
Manual. Claims are subject to review or audit by Audi Warranty.

Required Parts and Tools
See TSB 2037809.

Additional Information
The following Technical Service Bulletin(s) will be necessary to complete this procedure:
 TSB 2037809, 91 How to update MMI MIB navigation map – potential customer concerns.
All part and service references provided in this TSB (2057052) are subject to change and/or removal. Always
check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the
Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.

Page 6 of 7
© 2019 Audi of America, Inc.
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.

©2019 Audi of America, Inc. All rights reserved. The 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.

Page 7 of 7
© 2019 Audi of America, Inc.
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.