28 13 21 2017555

Technical Service Bulletin
28 Key does not stay or engage in ignition lock
28 13 21 2017555/8 April 19, 2013. Supersedes Technical Service Bulletin Group 28 number 12-19 dated May 1,
2012 for reasons listed below.
Model(s)
Year
A4
2009 - 2014
A5 / S5
2008 - 2014
A5 / S5
Cabriolet
2010 - 2014
Q5
2009 - 2014
A8
2011
VIN Range
Vehicle-Specific Equipment
All
N/A
All
With ignition switch (E415)
Condition
REVISION HISTORY
Revision
Date
Purpose
8
-
Revised header data (Added MY2014 & DTC)
7
5/1/2012
Revised header data (Added model year and A8)
6
12/1/2010
Revised header data (Added model years)
5
2/2/2010
Revised header data (Added VIN breaks)
Revised Condition (Added warning message and DTC)
4
5/22/2009
Revised header data to add Q5 and A5 Cabriolet
3
1/14/2009
Revised header data to add MY 2009 A4 and A5
2
11/25/2008
Revised title to include Repair Group
© 2013 Audi of America, Inc.
Page 1 of 4
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
The master key with remote control does not engage or stay in the ignition lock.
• On vehicles without Advanced Key, the remote keys are inoperable.
• On vehicles with Advanced Key:
• Keyless unlocking/locking using the door handle and keyless opening of the trunk lid using the trunk handle
are inoperable.
• The vehicle cannot be started with the Start/Stop button.
• The remote keys are inoperable.
• These conditions may be present:
• The message "ignition lock faulty" may appear in the instrument cluster driver information display.
• DTC 00166 (Access/Start Authorization Switch -E415- Incorrect Signal) may be stored in Comfort System
Central Control Module J393 (address word 46).
Technical Background
It is possible that objects have been inserted into the ignition lock, which causes the slide of the ignition lock to
become stuck in the rear part of the lock (S-contact position). The stuck slide is not allowed to return to the
starting point (0-position).
Production Solution
Not applicable.
© 2013 Audi of America, Inc.
Page 2 of 4
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
1. With the ignition lock installed in the vehicle, return the slide to its starting point.
2. Insert your index finger into the ignition lock,
gently press the slide to the end stop (max.
force 30N, about 5mm), then release,
allowing the slide to bounce back.
Figure 1. The slide.
3. With your index finger, hold the lower locking
latch (Figure 2) and pull the slide out
approximately 7mm.
Figure 2. The lower locking latch (blue circle).
4. Additionally, light compressed air may be used to blow out dirt or debris from the ignition lock.
5. Please explain to the customer that the problem is caused by inserting unsuitable objects into the ignition lock.
© 2013 Audi of America, Inc.
Page 3 of 4
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
This TSB is informational only and not applicable to any Audi warranty.
Additional Information
All parts and service references provided in this TSB 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.
Page 4 of 4
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.