A911311 2027718-

Technical Service Bulletin
91 Bluetooth call quality issues for caller on other end of call
91 13 11 2027718/5 October 31, 2013. Supersedes Technical Service Bulletin Group 91 number 13-86 dated
June 11, 2013 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
TT, A5 Cab,
A6, A7, A8
2011 - 2014
All
Bluetooth hands-free telephone system
Condition
REVISION HISTORY
Revision
Date
Purpose
5
-
Revised Service (Added note to call TAC for certain repairs)
Revised Required Parts and Tools (Changed quantity)
4
6/11/2013
Revised Service (Clarified information)
Revised Warranty (Updated Diagnostic Time)
Revised header data (added model year)
3
11/12/2012
Revised Warranty (Adjusted TUs)
2
8/6/2012
Revised Service
1
10/25/2011
Original publication
When the driver uses the Bluetooth hands-free telephone system to make a call, the listener on the other end
cannot clearly understand the driver. The driver’s voice sounds muffled, as if it is being heard from under water.
Technical Background
The microphone seal is damaged during installation into the roof module.
Production Solution
Improved microphone installation procedure and optimized microphone seal staring with January 2012 vehicle
production. Microphones with improved seals are at the 03S level or greater.
© 2013 Audi of America, Inc.
Page 1 of 9
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
Tip: This bulletin does not allow for replacement of the microphones unless there is physical damage found
to the rubber seal on the end of the microphone. Because there has been no hardware optimization to the
microphone, replacing a microphone that is not damaged will not improve the sound quality.
Confirm that the sound quality issue is not due to the phone or phone service provider:
1. Ensure that the customer’s phone is an Audi-approved Bluetooth device by checking the list located at
http://microsites.audiusa.com/ngw/12/experience/bluetooth/index.html.
2. Before making any repairs, road test the vehicle at a minimum speed of 45 mph with the top up (if applicable)
and all windows closed.
3. During the road test, verify the call quality issue by making a Bluetooth call to someone at the workshop.
Make sure that the same person will be available to answer another call after any repairs are made so that the
call quality improvement can be verified.
4. If no call quality issues are confirmed during the road test, end all analysis. The issue is most likely due to the
customer’s phone and/or service provider, which can be demonstrated to the customer by using a different
paired phone with a different service provider. In addition, it is normal to have a small amount of road noise in
the A5 Cabriolet or TT Roadster, as the location of the microphone at the top of the windshield allows for
noise to be easily transmitted. None of the repairs below will eliminate this small amount of road noise.
If call quality issues are confirmed, proceed with the repair procedure below.
Remove the trim plate in order to inspect the microphone
1. Remove the roof module from the vehicle according to ElsaWeb>>Repair Manual>> Electrical
System>>Electrical Equipment>>96 Interior Lights, Switches>>Removal and Installation>>Roof Trim Lamps
and Switches.
2. Remove the decorative trim plate from the roof module in order to inspect the seal of the microphone:
For A6 and A7 vehicles:
• Remove the decorative trim from the base plate
with your fingers. If necessary, gently pry the trim
with a trim stick or bone tool, then finish removing it
with your fingers.
• There are a number of different clips holding the
trim plate to the base plate depending on the trim
level of the vehicle (Figure 1).
Figure 1. Clip location for A6/A7 high-line roof
module (left) and for mid-line roof module (right)
© 2013 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
For TT and A5 Cabriolet vehicles:
• The decorative trim plate should only be pried from the base plate after the LED circuit boards are
removed from the LED jewels in order to prevent the LED jewels from breaking and causing a rattle after
reassembly.
• To remove the LED circuit boards,
first pry the top of the small circuit
board away from the LED jewel, in
the direction indicated by arrow 1
(Figure 2). It will only need to be
lifted 1-2mm. Then, pull up on the
circuit board in the direction
indicated by arrow 2 (Figure 2) to
release the circuit board from the
LED jewel. There are three
different attachment points of the
LED circuit board and LED jewel
(Figure 3).
• Repeat for the other side.
• Once the LED jewels are free from Figure 2. Prying the LED circuit-board of the jewel.
the circuit boards, the decorative
trim plate can be detached from
the base plate. Use your fingers to
pry the two pieces apart.
There are many clip points holding
the two pieces together. Sliding
your finger slowly around the
perimeter is the most effective way
to separate the two parts without
damaging them (Figure 4).
Note:
The use of a bone tool or screw driver
is not recommended for this roof
module assembly because it can
damage the soft touch paint on the
edge of the trim, which can be visible
once the part is reinstalled in the
headliner.
Figure 3. LED jewel attachment points.
© 2013 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 4. Prying the trim plate from the base plate.
Inspect and replace the microphone
1. Inspect the seal of the microphone for
damage:
• There are two splits in the rubber
seal. This is normal as long as the
two halves of the seal are touching
each other (Figure 5).
Figure 5. Undamaged seal
© 2013 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
• If the two halves of the seal are
loose and move freely, the seal is
damaged (Figure 6).
Figure 6. Examples of damaged seals
2. If none of the seals are damaged:
• Ensure that the microphones are firmly seated. A loud snap can be heard and felt when the microphone is
fully seated.
If any of the seals are damaged:
• If the vehicle is a 2013+ A6/A7
built after VIN DN005481, contact
TAC prior to proceeding with
repairs for special instructions.
When calling, please provide
repair order number, as well as
part numbers for microphones and
interior light assembly.
• If the vehicle does not fall into the
above range, replace the
microphone set by installing the
replacement microphone while the
decorative trim is removed from
the base plate. Take care when
doing so to prevent damaging the
new microphone’s seal by slowly
installing it perpendicular to the
base plate (Figure 7). Do not
install the microphone at an angle,
as this may pinch the seal (Figures
8 and 9)
Figure 7. Proper installation.
© 2013 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 8. Incorrect installation at an angle, showing a pinched seal on
the left.
Figure 9. Damage caused by a pinched seal.
• Carefully inspect the new microphone seal after it has been snapped into place.
3. If the vehicle is a TT or A5 Cabriolet:
• Visually inspect the round felt
material on the underside of the
decorative trim (Figure 10). The
felt material pushes against the
microphone’s rubber seal and
forms a barrier. The decorative
trim should be replaced (see
ETKA) if the material is bunched
up or not centered perfectly, as it
can potentially affect the call
quality.
Figure 10. Felt on backside of decorative trim.
© 2013 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 installing the new
microphone, partially pull out the
foam that is inserted in the
microphone to allow for a better
seal against the felt material
(Figures 11 and 12).
Figure 11. Foam is partially pulled out of the microphone.
© 2013 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 12. Foam is partially pulled out of the microphone.
Complete the repair
1. After the repair, road test the vehicle at a minimum speed of 45 mph with the top up (if applicable) and all
windows closed.
2. During the road test, verify the call quality issue by making a Bluetooth call to the same person at the
workshop that was called before the repair in order to verify call quality improvement.
3. If the call quality is still poor, call the Technical Assistance Center (TAC).
4. If the seals and microphones are installed properly, continue with diagnosis. Refer to TSB 2026895, 91
Microphone testing tips and TSB 2026888, 91 Bluetooth Phone: Poor call quality.
© 2013 Audi of America, Inc.
Page 8 of 9
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
Warranty
Claim Type:
Use applicable claim type. If vehicle is outside any warranty, this Technical Service Bulletin
is informational only.
Service Number:
9157
Damage Code:
0010
Labor Operations:
Remove and install interior light
9620 1900
See Elsa
Remove and install telephone microphones
9157 1950
10 TU
Extended Road Test before and after repair
9157 9999
A-Time (Not to
exceed 40 TU)
GFF
No allowance
0 TU
Road test prior to service procedure
0121 0002
10 TU
Road test after service procedure
0121 0004
10 TU
Diagnostic Time:
Technical diagnosis at dealer’s discretion
(Refer to Section 2.2.1.2 and Audi Warranty Online for DADP allowance details)
Claim Comment:
As per TSB # 2027718/5
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
Part Number
Part Description
Quantity
See ETKA
Microphone
As needed
Additional Information
The following Technical Service Bulletin(s) may be necessary to complete this procedure:
•
TSB 2026895, 91 Microphone testing tips
•
TSB 2026888, 91 Bluetooth Phone: Poor call quality
All parts and service references provided in this TSB (2027718) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
© 2013 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.