91 A3 e-tron smartphone app & web portal vehicle data cannot be updated with error "Vehicle not
reachable"
91 17 65 2049406/1 December 7, 2017.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A3

2016 - 2017

All

e-tron

Condition
The customer states that the Audi connect services
from the A3 e-tron smartphone app or web portal do
not work. The message “Vehicle not reachable”
appears when refreshing the data or when
attempting to update the vehicle charge or HVAC
settings (Figure 1).

Figure 1. Error message in e-tron smartphone app.
All e-tron remote features which require the vehicle to send updated data to the Audi connect server via the app
or web portal can be affected. Those can include the following:
 Vehicle park position.
 Vehicle door or lighting status.
 Remotely turning on or off auxiliary climate control or setting a timer.
 Remotely turning on or off battery charging or setting a timer.

Page 1 of 7
© 2017 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
The control module for emergency call module and
communication unit (OCU), J949 (address word 0075) utilizes a
cellular antenna located inside the control module. When the
vehicle is parked in an area where the OCU has little or no 3G
GSM data reception, the vehicle cannot send or receive data.
The emergency call module and communication unit (OCU),
J949 (address word 0075) is located behind the instrument
cluster in the dash panel (Figure 2). The solution is to provide a
connection to an external (outside of the module) antenna to
improve the data reception to the OCU.

Figure 2. OCU location (Red).
Tip: The emergency call module and communication unit (OCU), J949 (address word 0075) is only a data
communication module in the A3 e-tron. There is no emergency call feature in the A3 e-tron.

Production Solution
An external cellular antenna was added to the control module for emergency call module and communication unit
(OCU), J949 (address word 0075) starting in calendar week 45/16.

Service
This repair involves installing an extra external cellular antenna in the vehicle. The new antenna will either be
used by the MMI, PR Code 7UG, or connected directly to the control module for emergency call module and
communication unit (OCU), J949 (address word 0075), PR Code 7Q0. It is important to note there are two
different possible MMI systems (PR codes 7UG or 7Q0) with two different repair processes.
Required equipment:
 Access to the customer’s e-tron app or access to the customer so that the customer can test the e-tron app
functionality after completion of repair.
 The attached detailed repair instructions.

Page 2 of 7
© 2017 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.

 For PR Code 7UG: Additional antenna with bracket and adapter/extension wires/cables (see Required Parts
and Tools). Read full Service section before ordering parts and attachment “pr_code_7ug-a3_etron_ocu_antenna_v4”.
 For PR Code 7Q0: Additional antenna with bracket and adapter cable (see Required Parts and Tools). See
attachment “pr_code_7q0-a3_e-tron_ocu_antenna_v4”.
Note:
Vehicles that do not have Audi connect, the repair time and parts required are less than for PR Code 7UG.
 Tools to remove glovebox, cluster, and MMI main unit (see ElsaPro repair manual).
 VAS 6720 Antenna Cable Repair Kit (if you have not used this tool, see Figure 3 at end of the Service).
Time to complete update:
 Repair solution 1 (PR code 7UG): Approximately 1.5hrs - 2hrs for repair (depends on instrument cluster type –
FPK or Standard), which includes removal and installation times for components.
 Repair solution 2 (PR code 7Q0): Approximately 1 - 1.5hrs for repair which includes removal and installation of
the instrument cluster, MMI main unit, and glove compartment.

REPAIR SOLUTION 1 (PR CODE 7UG, VAS 6720 Needed): For vehicles with MMI Navigation plus and
Audi connect (reference attached detailed repair instructions titled “pr_code_7ug-a3_etron_ocu_antenna_v4”.).
This repair involves rerouting the existing LTE2 antenna connection at the MMI to the OCU and connecting the
new antenna to the MMI main unit. Access to the LTE2 antenna in the bumper is not required.
1.

Remove the instrument cluster control module, J285 (address word 0017) to gain access to the OCU.

2.

Remove the information electronics control module 1, J794 (address word 005F) (MMI main unit) to gain
access to the LTE connectors in the back of the MMI main unit.

3.

Remove the glove compartment to gain access behind the dash panel to route the new extension cable.

4.

Attach the bracket (8V4 035 596) to the vehicle & snap in the additional antenna (4M0 035 504) into the
bracket.

5.

Remove one of the spare cables from the double connector cable (000 098 713 A) and modify the straight
end of the spare cable to replace the male end with a female end (see attachment “pr_code_7ug-a3_etron_ocu_antenna_v4”). This step requires the VAS 6720.

6.

Disconnect the LTE2 antenna wire from information electronics control module 1, J794 (address word 005F)
(MMI main unit).

7.

Connect the new antenna to the modified short extension cable and then connect the short adapter cables
together. Next connect the 2nd short adapter cable to the back of the information electronics control module
1, J794 (address word 005F) (MMI main unit).

Page 3 of 7
© 2017 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.

8.

Modify the harness connector end, which was removed from the J794, to add the straight connector
(original is a 90 degree bend connector), (see attachment). This step requires the VAS 6720.

9.

Route the long extension cable behind the instrument panel and connect the long extension cable to
emergency call module and communication unit (OCU), J949 (address word 0075) and connect the other
end to the modified harness connector for the LTE antenna. Be sure to wrap cable to existing harnesses to
prevent future noise concerns.

10. Reinstall the instrument cluster control module, J285 (address word 0017), information electronics control
module 1, J794 (address word 005F), and glove compartment.
11. Check the function of the e-tron app if possible.
12. You may test the e-tron app with the vehicle parked at a location where the existing 3G GSM cellular
reception is typically low, or provide the vehicle back to the customer and ask them to verify the repair.

REPAIR SOLUTION 2 (PR CODE 7Q0, VAS 6720 Not Needed): For vehicles with MMI radio and without
Audi connect (no LTE antennas) (reference attached detailed repair instructions “pr_code_7q0-a3_etron_ocu_antenna_v4”).
This repair involves connecting the new additional antenna directly to the OCU (there are no pre-existing LTE
antennas connected to the MMI main unit).
1.

Remove the instrument cluster control module, J285 (address word 0017) to gain access to the OCU.

2.

Remove the information electronics control module 1, J794 (address word 005F) (MMI main unit) to gain
access to the new mounting location for the new antenna and for cable routing.

3.

Remove the glove compartment to gain access behind the dash panel to gain access to the new mounting
location for the new antenna and for cable routing.

4.

Attach the bracket (8V4 035 596) to the vehicle and snap in the additional antenna (4M0 035 504) into the
bracket.

5.

Connect the new antenna with the short extension cable (000 098 710 A) to the emergency call module
and communication unit (OCU), J949 (address word 0075).

6.

Remove the violet locking tab from the OCU’s double connector cable which was installed by the
factory. The connector will be populated with the GPS connection and will also have an open slot.

7.

Remove the female 90° degree connector from the short adapter cable (000 098 710 A) and install it on
the OCU’s double connector cable.

8.

Route the long extension cable behind the instrument panel and connect to the short adapter cable which
was already connected to the new antenna. Be sure to wrap cable to existing harnesses to prevent future
noise concerns.

Page 4 of 7
© 2017 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.

9.

Connect the short adapter cable, which was connected to the OCU, to the long extension cable (000 098
653) and wrap connection to prevent vibration noises.

10.

Reinstall the instrument cluster control module, J285 (address word 0017).

11.

Check the function of the e-tron app if possible.

12.

You may test the e-tron app with the vehicle parked at a location where the existing 3G GSM cellular
reception is typically low, or provide the vehicle back to the customer and ask them to verify the repair.

Tip: The repair procedure for cars without Audi connect should NOT be performed on cars with Audi
connect despite the shorter repair time. Cars with Audi connect will benefit greatly from using one of the preexisting LTE antennas instead of connecting the new antenna directly to the OCU. Despite the use of LTE
antennas on the vehicle for this service solution, the OCU will continue to only utilize 3G GSM cellular data
connection.

Reference video for VAS 6720 (Figure 3): https://audiacademy.kzoplatform.com/player/medium/818200463223559289?autoplay=on.

Figure 3. QR Code for
Supporting Video.

Warranty
Claim Type:

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

Service Number:

9170

Damage Code:

0040

Labor Operations: PR Code 7UG + 9S6: MMI Navigation plus with High Color Cluster

Page 5 of 7
© 2017 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.

Instrument cluster remove + reinstall

9025 1900

30 TU

Glove compartment remove + reinstall

6815 1900

50 TU

Install antenna including antenna wires

9138 2399

80 TU

ECM information display control head remove +
reinstall

9196 1900

30 TU

PR Code 7UG + 9S8: MMI Navigation plus with Virtual Cockpit Cluster
Instrument cluster remove + reinstall

9025 1910

60 TU

Glove compartment remove + reinstall

6815 1900

50 TU

Install antenna including antenna wires

9138 2399

80 TU

ECM information display control head remove +
reinstall

9196 1900

30 TU

PR Code 7Q0 + 9S6: MMI Radio with High Color Cluster

Diagnostic Time:

Claim Comment:

Instrument cluster remove + reinstall

9025 1900

30 TU

Glove compartment remove + reinstall

6815 1900

50 TU

Install antenna including antenna wires

9138 2399

50 TU

ECM information display control head remove +
reinstall

9196 1900

30 TU

GFF

0150 0000

Time stated on
diagnostic
protocol (Max
50 TU)

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

No allowance

0 TU

As per TSB #2049406/1

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.

Page 6 of 7
© 2017 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.

Required Parts and Tools
Part Number

Part Description

Quantity

Required For PR Code 7UG & 7Q0
4M0 035 504

Antenna (Additional GSM Antenna)

01

8V4 035 596

Antenna bracket

01

000 098 710 A

Adapter antenna cable (short)

01

000 098 653

Antenna cable 2000 mm (long)

01

D 373 125 A2

Textile adhesive tape

As needed

Required For PR Code 7UG Only (with MMI Navigation; Not needed for MMI Radio)
VAS 6720

Antenna Cable Repair Set

Dealer tool

000 098 713 A

Double Adapter Cable (Double Connector)

01

6Q0 035 575 K

Housing for Antenna Male Connector

01

000 979 911

Antenna Male Terminal Kit

01

6Q0 035 576 K

Housing for Antenna Female Connector

02

000 979 910

Antenna Female Terminal Kit

02

Additional Information
All parts and service references provided in this TSB (2049406) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
©2017 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.

Page 7 of 7
© 2017 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.