Technical Service Bulletin
37 Incorrect coding in control module after software update (DTC P1749 stored in TCM)
37 14 36 2037151/1 July 14, 2014.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A8

2013 - 2014

All

4.0TFSI

Condition
• After an SVM update, the following DTC appears in the Transmission Control Module (TCM) J217 (address
word 02):
• DTC P174900 (Automatic transmission control module incorrect code)
• There are no performance issues, and the MIL is not illuminated. The fault is only noticed when the TCM fault
memory is interrogated.

Technical Background
The self-coding function of the TCM may not complete during a software update.

Production Solution
Not applicable.

Service
The coding cannot be changed with Guided Fault Finding or Guided Functions. Use the following ODIS
instructions to manually code the TCM with the scan tool.
1.

Before proceeding, confirm that DTC P174900 is stored in the TCM. If there is no record of the fault, the
warranty claim will not be reimbursed.

2.

In the Control Modules tab in ODIS, select “Transmission Control Module”.

3.

Right-click to select “Transmission Control Module” again, which will open a pop-up menu.

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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
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Technical Service Bulletin
4.

Select “Control module OBD”
(Figure 1).

Figure 1. Selecting “Control module OBD”.
5.

In the OBD functions menu (Figure 2),
select “Code” then “Perform”.

Figure 2. ODB functions menu

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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
6.

A message appears with the warning:
“The operation to read the date failed.”
(Figure 3). Select “Ok” to continue.

Figure 3. Warning message
7.

The coding menu will be displayed.
Highlight “[LO]_Block 5”, then select
“Binary coding” (Figure 4).

Figure 4. Coding menu
8.

The binary coding screen appears. Select the row for Byte no. 2 to open the Binary coding input pop-up
menu (Figure 5).

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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. Binary coding input pop-up menu
9.

In the pop-up menu, enter “01” in the Hex Entry field (top-right field), then select “Apply”.

10. The coding menu will now show the changes ready to be made in the row for Byte no. 2 (Figure 6), under
“Hex input”. Select “Apply” on the bottom of the screen.

Figure 6. Coding changes ready to be made
11. A pop-up menu with the message: “Do you
really want to perform the coding?” appears
(Figure 7). Select “Yes” to continue.

Figure 7. Coding pop-up screen

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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
12. A pop-up menu with the message: “The
encoding string could not be checked for
errors. Do you want to save anyway?”
appears (Figure 8). Select “Yes”.

Figure 8. Error checking pop-up
13. One or more additional pop-up messages
appear. Select “OK” for each message.

Figure 9. Pop-up messages
14. After the pop-up messages have been cleared, the updated coding will be displayed under “Current hex
value” (Figure 10).

Figure 10. Updated coding
15. Clear the P1749 fault from the memory.
16. Perform an SVM specified-actual.

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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
Warranty
Claim Type:

Use applicable claim type. If vehicle is outside any warranty, this Technical Service Bulletin
is informational only.

Service Number:

3730

Damage Code:

0039

Labor Operations: Code the TCM

3730 2599

50 TU

Diagnostic Time:

GFF

0150 0000

Time stated on
diagnostic
protocol
(Max 40 TU)

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

No allowance

0 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 #2037151/1

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.

Additional Information
All parts and service references provided in this TSB (2037151) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.

© 2014 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.