91 Multiple vehicle features (ACC, Nav, DriveSelect, etc.) are not available, DTC P164700 stored in the
ECM
91 20 76 2042506/10 June 5, 2020. Supersedes Technical Service Bulletin Group 91 number 20-34 dated
February 6, 2020 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

R8

2017 - 2020

All

Not Applicable

Q5

2018 - 2020

All

Not Applicable

A3, S3

2015 - 2020

All

Not Applicable

TT, TTS

2016 - 2020

All

Not Applicable

A4, A4
allroad, S4,
A5, and Q7

2017 - 2019

All

Not Applicable

A6, A7, S6,
S7, and
RS7

2016 - 2018

All

Not Applicable

Condition
REVISION HISTORY
Revision

Date

Purpose

10

-

Revised header (Removed FoD vehicles)

9

02/06/2020

Revised header (Changed title to include DTC code)
Revised Service (Added Note for ODIS feedback)

8

12/06/2019

Revised header (Updated DTC and added MY 2020)
Revised Condition (Updated DTC)
Revised Warranty (Removed table)

Page 1 of 7
© 2020 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.

Customer states:
One or more of the following conditions:
 Audi drive select functions cannot be selected
(Figure 1).
 Cruise control does not work (except for A6
and A7) and DTC P164700 (ECM incorrect
coding) is stored in the engine control module
(address word 0001 (ECM), etc.).
 Navigation is not activated (Figure 2 and
Figure 3).
 Bluetooth is unavailable.
 Audi smartphone interface, including CarPlay
or Android Auto, is not available.
 Voice recognition is unavailable (in all cars
except A3 Cabriolet. For A3 Cabriolet, see
TSB 2038136: 91 Voice recognition is not
available or not enabled).

Figure 1. Audi drive select functions unavailable and greyed
out.

Figure 2. Navigation not activated message (Original MIB
HMI).

Page 2 of 7
© 2020 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.

Figure 3. Navigation not activated message (New MIB2 HMI).
Workshop findings:
The following DTC is stored in the engine control module (ECM), J623 (address 0001):
 DTC P164700 (Checking coding/versions of control modules in drivetrain).

Technical Background
Audi drive select, ACC, regular cruise control, navigation, Audi smartphone interface, Bluetooth, and voice
recognition are functions controlled by activation keys, which are stored in certain control modules in the
vehicle. These activation keys are designed to allow the customer to purchase features/functions as an aftersales
add-on. Some features are standard in the North American market but optional in other markets, so the activation
codes are preprogrammed into the control modules when a car for the North American market leaves the factory.
The activation keys are stored in an AUDI AG backend server and can be obtained through the SVM Activations
test plan.
The following scenarios can cause the issues listed in the Condition:
 Replacement or vehicle-to-vehicle swap of the data bus diagnostic interface (Gateway), J533 (address word
0019), without running the SVM Recovery Activation test plan (automatically added in 19-GFF replacement
test plan), or if the test plan is executed and fails.
 Replacement of the information electronics control module 1 (MMI), J794 (address word 005F), without
running the SVM Recovery Activation test plan (automatically added in 5F-GFF replacement test plan), or if
the SVM Activation test plan is executed and fails.
 Replacement of the complete lock set in the vehicle without running the SVM Activations test plan, or if the test
plan fails.

Page 3 of 7
© 2020 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.

Note:
Always run the appropriate GFF Replacement test plan for an ECU when replacing the control module. Do not
rely on SVM spec/actual or SVM configuration.
 DTC P164700 (Checking coding/versions of control modules in drivetrain) is set in one or more of the control
modules on the Powertrain CAN bus when the ACC or regular cruise control function is not activated in the
Gateway. This is by design to indicate to the technician that the feature will not be functional until the activation
is completed in the Gateway module.

Production Solution
Not applicable.

Service
Required equipment:
 ODIS Tester.
Time to complete update:
 Varies based on concern and solution: 30-90 minutes.
Note:
Please submit an ODIS feedback to expedite the development of a new test plan.
Repair procedure:
1. For MMI related concerns (Navigation/Bluetooth/Smartphone Interface/Voice Recognition): Enter the
Red Engineering Update menu to view the status of all activation keys of the information electronics control
module 1 (MMI), J794 (address word 005F): Red Engineering Menu >> System >> Activation Keys. It is not
possible to view the activation keys of the data bus diagnostic interface (Gateway), J533 (address word
0019) without using ODIS.
For other non-MMI related concerns (Drive Select/ACC/Cruise Control): Skip to the repair procedure
below.
2. For A3 MIB1: Hold north-west soft key + BACK button for 5-10 seconds (Press the BACK button first).
For A6 and A7 MIB2: Hold north-west soft key + BACK button for 5-10 seconds (Press the BACK button
first).
For TT, R8, B9, and Q7: Hold left NAV toggle UP + right Media toggle DOWN for 5-10 seconds (Press NAV
toggle up first).

Page 4 of 7
© 2020 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.

ACTIVATION KEY DEFINITIONS:
Legal = The activation key is activated in the
MMI and the function should be active. If the
function remains inactive, contact TAC.
Temporarily withdrawn or Temp illegal =
This indicates that the SVM activation test plan
was not completed (Figure 4). This status is
normal for all parts that have been swapped
from a different vehicle. Perform the SVM
Activations test plan as indicated below, under
Repair Procedure.

Figure 4. Activation keys showing “Temporarily withdrawn”.
Illegal = This indicates that the activation key currently stored in the MMI is not for the vehicle in which it is
currently installed. This status is normal for all service parts. If the part is original, this can be an indication of
a software issue. Follow the Repair Procedure below.
Repair Procedure:
1. There is a known issue with the activations
keys stored in the MMI where they can
become corrupt, thus the first step will be to
delete the activation keys in the MMI. Delete
the activations of the affected system using
the ODIS test plan DIAGNOSIS >> START
DIAGNOSIS >> SPECIAL FUNCTIONS >>
“SVM – Erase activations” (Figure 5).

Figure 5. SVM – Erase activations.
2. When prompted choose the appropriate system to delete activations based on the customer’s concern:
 For concerns with Navigation, Bluetooth, Audi smartphone interface, or voice recognition, select option -1for the MMI (Information Electronics Control Module 1).
 For concerns with Audi drive select, adaptive and regular cruise control, select option -2- for the Gateway
(Data Bus On Board Diagnostic Interface) (Figure 6).

Page 5 of 7
© 2020 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.

Figure 6. MMI (Information Electronics Control Module 1); Gateway (Data Bus On Board Diagnostic
Interface).
3. After deleting the activations it may be required to adapt the component protection of the entire vehicle
system. To do this select the test plan “Diagnostic Interface f.Data.component.protection (basis)” under
“Special Functions >> Component Protection functions”.
4. Next, execute the SVM Activations test plan at DIAGNOSIS >> START DIAGNOSIS >> SPECIAL
FUNCTIONS >> SVM Activations >> PERFORM TEST >> -2- Obtain existing activations from server for
replacement control module?
This test plan will recover all activation codes for both the MMI and Gateway functions.
5. When prompted, select “obtain existing
activations” (Figure 7).

Figure 7. Obtain existing activations.
6. Next, recheck the functionality. A three-finger reset may be required of the MMI system when performing the
activations with the MMI (see the attached file mib_mmi_shortcut_keys.pdf). A reset is not required if the
Gateway activations were recovered.
7. If the problem persists, then contact TAC. No hardware replacement is authorized under this bulletin.

Warranty
This TSB is informational only and not applicable to any Audi Warranty.

Page 6 of 7
© 2020 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.

Additional Information
The following Technical Service Bulletin will be necessary to complete this procedure:
 TSB 2038136, 91 Voice recognition is not available or not enabled.
All parts and service references provided in this TSB (2042506) 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.
©2020 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
© 2020 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.