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
© 2024 Audi of America, Inc.
Internal

Page 1 of 5

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
• 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.

© 2024 Audi of America, Inc.
Internal

Page 2 of 5

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.

© 2024 Audi of America, Inc.
Internal

Page 3 of 5

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

Page 4 of 5

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
WA14AAGE0RB029158

WA15AAGE1RB025656

WA1DAAGE5RB026420

WA14AAGE4RB030913

WA15AAGE1RB027780

WA1DAAGE5RB027647

WA14AAGE6RB028175

WA15AAGE1RB022000

WA1DAAGE9RB025108

WA14AAGE7RB024880

WA15AAGEXRB026398

WA1DABGE5RB026200

WA14AAGE9RB028638

WA15AAGEXRB026546

WA14AAGE3RB029574

WA15ABGEXRB026472

WA14ABGE9RB205373

WA15ABGE5RB025102

WA14ABGE9RB026748

WA15ABGE0RB027145

WA14ABGE2RB027000

WA16AAGE7RB025200

WA14ABGE0RB029974

WA16AAGE7RB026394

WA14ABGE4RB025118

WA16AAGE5RB026507

WA14ABGE8RB025526

WA16AAGE3RB025100

WA15AAGE2RB032650

WA16AAGE1RB026259

WA15AAGE0RB026474

WA16AAGE1RB026522

WA15AAGE0RB033134

WA16AAGE1RB027038

WA15AAGE8RB026089

WA16ABGE4RB024852

WA15AAGE6RB027337

WA16CBGE8RB033189

WA15AAGE6RB027435

WA1BAAGE1RB027099

WA15AAGE6RB027841

WA1BAAGE2RB025765

WA15AAGE6RB028178

WA1BAAGE0RB025649

WA15AAGE4RB027496

WA1BABGE0RB025513

WA15AAGE4RB032178

WA1BABGEXRB027348

WA15AAGE4RB027352

WA1CAAGEXRB025839

WA15AAGE9RB031818

WA1CAAGEXRB026943

WA15AAGE7RB025175

WA1CAAGEXRB027333

WA15AAGE7RB026407

WA1CAAGE8RB034040

WA15AAGE7RB027221

WA1CAAGE6RB032741

WA15AAGE3RB032284

WA1CAAGE4RB027490

© 2024 Audi of America, Inc.
Internal

Page 5 of 5

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.