A901554 2040593-

Technical Service Bulletin
90 Sporadically the ignition cannot be switched on
90 15 54 2040593/1 May 11, 2015.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A6
2005 - 2011
All
Not Applicable
Q7
2007 - 2015
All
Not Applicable
Condition
• Customer reports that the ignition sporadically cannot be switched on.
• One of the following conditions is found through guided fault finding (GFF):
• DTC 00456 (Access/start control module -J518- no communication) is found in several control modules.
• The access/start authorization control module, J518 (address word 05), identifies itself with implausible data
(for example: O?O?O?O?O?O?)
Tip: If no communication is possible, activate the bus by switching on the hazard warning lights. It should
now be possible to carry out a diagnosis.
Note:
If DTC 00288 (Steering column lock actuator-N360, faulty) is logged in the access/start authorization control
module, J518 (address word 05), this bulletin does not apply. Proceed according to GFF.
Technical Background
Incorrect software.
Production Solution
Optimized software.
© 2015 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
Service
1. Reset the access/start authorization control module, J518
(address word 05), by removing and reinstalling the 30
power fuse for the control module:
• For A6: Remove green 30A fuse SB42 from fuse box
instrument panel left (Figure 1). Reinstall the fuse after
30 seconds.
• For Q7: Remove green 30A fuse SB10 from fuse box
instrument panel left (Figure 2). Reinstall the fuse after
30 seconds.
After the reset, the ignition can be turned on.
Figure 1. SB42 fuse location in A6 vehicles.
Figure 2. SB10 fuse location in Q7 vehicles.
© 2015 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
2. Before proceeding, use ODIS to determine the
hardware part number of the access/start
authorization control module, J518 (address
word 05):
• First, right-click Address 05, then click
Control module OBD from the pop-up
menu (Figure 3).
• Next, in the OBD functions menu, select
Identification, then click Perform (Figure
4).
• Scroll to the bottom of the lower results
window to see the software version and
hardware part number (Figure 5).
Figure 3. Right-click Address 05 (1), then click Control
module OBD (2).
Figure 4. In the OBD functions menu, select Identification
(3), then click Perform.
© 2015 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 5. Bottom of lower results window (4) showing
software version (5) and hardware part number (6).
3. • For model year 2009 - model year 2014 vehicles:
Perform SVM update with code 05A005, following the instructions below.
• For model year 2005 - model year 2008 vehicles:
• If the hardware part number is 4F0905852D, 4F0905852E, 4F0905852F, or 4F0905852H, perform SVM
update with code 05A005, following the instructions below.
• If the hardware part number is not listed above, do not perform the SVM update. Proceed to step 4.
Tip: In vehicles with hardware part numbers 4F0905852D or 4F0905852E, the permanent entry DTC
1314 (Engine control module (ECM) - no signal/communication) is logged in the access/start
authorization control module, J518 (address word 05). This entry is related to functions of the start/stop
system that are not supported by this vehicle. The entry can be ignored, as it does not affect any functions.
Further GFF is not necessary.
4. Replace the access/start authorization control module, J518 (address word 05).
5. Check the software version in the new access/start authorization control module, J518 (address word 05). If
the software version is under 0210, perform an update with SVM code 05A005, following the instructions
below.
© 2015 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
SVM Update Instructions
1. Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
2. Update the access/start authorization control module, J518 (address word 05), using the SVM action code as
listed in the table below if necessary.
Model
Old Software Part
Number
Old Software
Version
New Software Part
Number
4F0905852F
Q7
A6
4F0905852D
*
4F0905852D
4F0905852H
4F0905852E
4F0905852E
4F0905852H
(or higher)
SVM Code
Input
4F0905852F
4F0905852H
4F0905852D
New Software
Version
4F0905852D
*
4F0905852H
4F0905852F
0210
05A005
0210
05A005
4F0905852F
Warranty
Claim Type:
Use applicable claim type. If vehicle is outside any warranty, this Technical Service
Bulletin is informational only.
Service Number:
9668
Damage Code:
0040
Labor Operations:
SVM update
0151 0000
Time stated on
diagnostic protocol
(Max 100 TU)
Immobilizer ECM replace (If needed)
9668 5500
250 TU (For Q7)
160 TU (For A6)
Diagnostic Time:
GFF
No allowance
0 TU
Road test prior to service procedure
No allowance
0 TU
Road test after service procedure
0121 0004
10 TU
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 #2040593/1
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.
© 2015 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
Additional Information
The following Technical Service Bulletin will be necessary to complete this procedure:
• TSB 2011732 00 Software Version Management (SVM), operating instructions.
All part and service references provided in this TSB (2040593) are subject to change and/or removal. Always
check with your Parts Dept. and service manuals for the latest information.
© 2015 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.