A9321512059309_4

93 "Electrical system: Malfunction! Safely turn off vehicle" is in the cluster, DTC P0AC000 is stored in
battery module
93 21 51 2059309/4 May 26, 2021. Supersedes Technical Service Bulletin Group 93 number 20-34 dated
September 18, 2020 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
Q5 PHEV
2019 - 2021
All
PHEV
A7 PHEV
2021
All
PHEV
Condition
REVISION HISTORY
Revision
Date
Purpose
4
-
Revised Service (Changed to software updates)
3
05/26/2021
Revised header (Added A7 and Q5 MY 2021)
Revised Condition (Updated Workshop findings)
Revised Production Solution (Updated information)
Revised Service (Changed to software updates)
Revised Warranty (Added table)
Revised Additional Information (Added reference)
2
09/18/2020
Revised header (Updated model)
Customer states:
 When the "ignition" is switched on, a red warning light appears and the
vehicle cannot be moved.
 In the instrument cluster, the red battery symbol (Figure 1) with the text
"electrical system: Malfunction! Safely turn off vehicle" is shown.
Figure 1. Red battery symbol.
 After turning the car off and then on again, the warning light usually
goes out and the vehicle works properly again.
Workshop findings:
 According to Guided Fault Finding, the BJB (Battery Junction Box – SX6) should be replaced but the
replacement is not effective.
The following DTC is stored in the hybrid battery management module, J840 (address word 008C):
Page 1 of 8
© 2021 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.
 DTC P0AC000 (Hybrid/EV Battery Pack Current Sensor "A" Circuit Range/Performance).
Technical Background
The internal communication between the BJB (Battery Junction Box – SX6) electronics and the current/voltage
sensor is under extremely unusual conditions and registers as inaccurate.
Production Solution
Improved software.
Service
The TSB applies if in the battery regulation control module, J840 (address word 008C) one of the following DTC
combinations is logged:
DTC
Combination/Not
Other DTC
Instructions
P0AC000
As the only entry in 008C N/A
Perform TSB
P0AC000
In combination with
P33F000
Perform TSB
P0AC000
In combination with
U059B00
Perform TSB
The TSB does not apply if other DTCs in addition to the DTC combinations above are logged in the battery
regulation control module, J840 (address word 008C). If this is the case, standard diagnosis continues outside of
this TSB.
Tip: To prevent the high-voltage battery from charging during the software update, the high-voltage charging
cable on vehicles with high-voltage components must be unplugged BEFORE the SVM code is entered. Please
note that charging the high-voltage battery during a software update can cause damage to the high-voltage
components.
Tip: To ensure the flashing procedure does not fail, please ensure the diagnostic scan tool has been
updated to the latest level
Tip: As the Battery Junction Box (SX6) is a slave of the hybrid battery management module, J840 (address
word 008C) it does not display the software version of the control modules directly in the diagnostic log,
instructions on how to evaluate the various software versions are provided below.
Page 2 of 8
© 2021 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.
Identifying the control modules:
1. To obtain the data we need to use the diagnostic scan tool then right-click and select the hybrid battery
management module, J840 (address word 008C), and select “Guided Functions” (Figure 2).
Figure 2. Guided Functions.
2. In the Guided Functions menu select 008C –
Identification and click “Perform” (Figure 3).
Figure 3. Guided Functions Menu.
Page 3 of 8
© 2021 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.
3. The Identification data of the hybrid battery management module, J840 (address word 008C) is now
displayed (Figure 4). Write down the Software part number, Software Version number, Hardware part
number, and Hardware version number, as this information will be needed in the following steps. After you
have saved the data for later, answer yes to the question “Do you still want additional identification data?”
Figure 4. Identification data, Hybrid Battery Management module.
4. After selecting “Yes” the scan tool will obtain more data from the hybrid battery management module, J840
(address word 008C). This data is not needed for this TSB so we can ignore it and click “Continue”.
5. The next screen will ask “Do you want to read and display the subsystems” and it will display the number of
slave control modules. Select “Yes”.
6. After selecting “Yes” the scan tool will obtain the identification of all the slave modules of the hybrid battery
management module, J840 (address word 008C). The Battery Junction Box (SX6) should be the 1st Slave
displayed but if it is not scroll down until you find it and write down the Software part number, Software
Version number, Hardware part number, and Hardware version number, as this information will be needed
in the following step.
Page 4 of 8
© 2021 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.
Figure 5. Battery Junction Box (SX6) Identification.
7.  Now compare your actual software and hardware with the table below and if the vehicle has the affected
software in either the hybrid battery management module, J840 (address word 008C) or the Battery
Junction Box (SX6) then update the control modules according to the SVM instructions below.
 If both of the control modules already have the improved software this TSB does not apply.
Affected Software
Control Software part
Module
number
Improved Software
Software
Level
Hardware part
number
Software part
number
Software
Level
Hardware part
number
4K0915233
0275
4KD915233
4K0915233A
0278
4K0915233
4M0915233R
0274
4M0915233C
4M0915233AE
0278
4M0915233C
4K0915254C
0205
4K0915254C
4K0915254D
0206
4K0915254C
SX6
80A915253C
0103
80A915253C
(06D0)
80A915253E
0106
80A915253C
80A915253C
0105
80A915253C
80A915253D
0105
80A915253D
80A915253E
0106
80A915253D
008C
SVM Update Instructions
8.
Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
Page 5 of 8
© 2021 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.
Update the Hybrid Battery Management module, (J840) and/or the Battery Junction Box (SX6) using the
SVM action codes as listed in the table below.
10.
For this SVM update, two SVM action codes will have to be performed and they must be performed in the
order described below.
Note:
If the sequence “SVM code 1 before SVM code 2” is not followed precisely when flashing or not followed
through to the end, it may not be possible to operate the vehicle.
Step Model
Control
Module
Old Software
Part Number
Old
Software
Version
New Software
Part Number
New
SVM Code
Software Input #1
Version
(or
higher)
Q5 TFSI e
A7 TFSI e
4K0915233
0275
4K0915233A
0278
4M0915233R
0274
4M0915233AE
0278
4K0915254C
0205
4K0915254D
0206
SX6
80A915253C
0103
80A915253E
0106
(06D0)
80A915253C
0105
80A 15253E
0106
80A915253D
0105
80A915253E
0106
008C
(PHEV, Hybrid)
8CA006
1
Step
Model
Control
Module
Old Software Old
Part Number Software
Version
New Software
Part Number
New
Software
Version
SVM Code
Input #2
(or higher)
Q5 TFSI e
A7 TFSI e
4K0915233
0275
4K0915233A
0278
4M0915233R
0274
4M0915233AE
0278
4K0915254C
0205
4K0915254D
0206
80A915253C
0103
80A915253E
0106
80A915253C
0105
80A915253E
0106
008C
(PHEV, Hybrid)
2
SX6
(06D0)
8CA006KONF
Page 6 of 8
© 2021 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.
80A915253D
0105
80A915253E
0106
11. After completion of both SVM updates the installed software should match the target software shown in the
table in step 7.
Warranty
Claim Type:
 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
9327
Damage Code:
0040
Labor Operations:
Software Updates
0151 0000
Time stated on
the diagnostic
protocol (Max 70
TU)
Diagnostic Time:
GFF
0150 0000
Time stated on
the diagnostic
protocol (Max 40
TU)
Road test prior to service procedure
No allowance
0 TU
Road test after service procedure
0121 0004
10 TU
Claim Comment:
As per TSB #2059309/4
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
The following Technical Service Bulletin(s) 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 (2059309) are subject to change and/or removal. Always
check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the
Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
Page 7 of 8
© 2021 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.
©2021 Audi of America, Inc. All rights reserved. The 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 8 of 8
© 2021 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.