A9824002072715_1

Technical Service Bulletin
93 Q8 e-tron - electric drive: fault. Cooling system - B16A284 B16A285 B16A384 B16A385 P053400
P0CE900 P139B00 P2B2A00
98 24 00 2072715/1 January 23, 2024.
Model(s)
Year
VIN Range
e-tron quattro, etron Sportback
quattro, e-tron S,
and e-tron S
Sportbck
2023
All
Q8 e-tron
quattro, Q8 etron Sportback,
SQ8 e-tron
quattro, and SQ8
Sportback e-tron
Vehicle-Specific Equipment
Not Applicable
2024
See attached VIN List
Condition
Customer States:
One of the following messages appears in the instrument cluster:
Scenario 1
• Electric drive: fault. Cooling system. Please contact workshop.
• In addition, the yellow drive system indicator lamp will light up (Figure 1).
Figure 1. Yellow drive system indicator lamp.
Scenario 2
• Switch off engine and check coolant level. See owner's manual.
• In addition, the red drive system warning lamp will light up (Figure 2).
Figure 2. Red cooling system warning lamp.
Workshop findings:
At least one of the following event memory entries (static or intermittent) is logged in the thermal management
control unit (diagnostic address 00C5):
• B16A284: Refrigerant pressure for cooling interior compartment, signal too low
• B16A285: Refrigerant pressure for cooling interior compartment, signal too high
• B16A384: Refrigerant pressure for heating interior compartment, signal too low
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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
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Technical Service Bulletin
• B16A385: Refrigerant pressure for heating interior compartment, signal too high
• P053400: A/C Refrigerant Charge Loss
• P0CE900: Hybrid/EV Electronics Coolant Pump Control Circuit/Open
• P139B00: Engine Coolant Level Sensor, low coolant level
• P2B2A00: Hybrid/EV Electronics Coolant Pump Dry Run
Technical Background
Potential damage to the cooling system hose.
Production Solution
Not applicable.
Service
Try to reproduce the customer complaint (based on the description/cause of the issue), so that it can be
clearly assigned to this TSB. The following repair must only be carried out if all the criteria (model/type,
chassis number, engine/motor and gearbox code, PR number(s), part number, software version, code
etc.) apply exactly. Otherwise, this solution will not eliminate the problem, and repeat repairs may be
necessary. In such a case, we may reject the warranty claim and re-debit the parts.
TSB applies if the affected vehicle identification number can be found in the header data and one or more
of the event memory entries specified above has been logged.
Before starting repair work, order the coolant hose with part number 4KE 998 465 D in ETKA.
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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 3: Coolant hose (10).
High-Voltage system! High voltage can cause fatal injury.
• The voltage levels in the high-voltage system constitute a safety hazard. Danger of severe or fatal
injuries from electric shock.
• It is essential that you observe and adhere to the safety information in the Workshop Manual during
all work on the high-voltage system.
Perform the repair according to the Audi Workshop Manual and the attached further instructions.
Warranty
Claim Type:
• 110 Up to 48 Months/50,000 Miles.
• G10 for CPO Covered Vehicles – Verify Owner.
• If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.
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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 Number:
1962
Damage Code:
0010
Labor Operations:
Remove and install rear cover
5194 1900
30 TU
Replace coolant hose for high-voltage
battery
1962 5599
220 TU
GFF / Guided Functions
0150 0060
Time stated on
the diagnostic
protocol
Diagnostic Time:
(Max 50 TU)
Claim Comment:
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
No allowance
0 TU
As per TSB 2072715/1
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 part and service references provided in this TSB (2072715) 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.
©2024 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.
© 2024 Audi of America, Inc.
Internal
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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
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WA1CAAGE4RB027490
© 2024 Audi of America, Inc.
Internal
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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.