94 Rear lights do not switch from bumper to the hatchgate
94 21 48 2047618/5 September 22, 2021. Supersedes Technical Service Bulletin Group 94 number 20-23 dated
April 20, 2020 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

Q7, SQ7

2017 - 2023

All

Not Applicable

Condition
Revision

Date

Purpose

5

-

Revised header (Added Model Years 2022 - 2023)
Revised Warranty (Updated SRT)

4

04/20/2020

Revised header (Added Model Years 2020 - 2021)
Revised Production Solution (Solution modified)
Revised Service (Service procedure modified)
Revised Warranty (Additional repair option SRT)

3

02/07/2019

Revised header (Added Model Year 2019 with VIN break)
Revised Production Solution (Solution specified)
Revised Service (Description of solution)
Revised Warranty (Removed temporary solution)
Revised Required Parts and Tools (Added table)

Customer states:
 When the rear lid is closed, the lights in the rear
bumper do not switch over to the main lights on
the rear lid.
 The error message “Vehicle lights: malfunction!
Please contact Service” intermittently appears in
the driver information system (Figure 1).
 All of the rear light bulbs are fully functional. None
are found to be faulty or incorrect.

Figure 1. Error message.

Workshop Findings:
The following DTC may be stored in the comfort system central control module, J393 (address 0046):

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© 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 B146C29 (Rear lid -closed- sensor Implausible signal)

Technical Background
This condition may be caused by incomplete
actuation of the rear lid closed sensor G525/G526
due to debris in the switch mechanism (Figure 2).

Figure 2. Rear lid closed sensor.
Mounted to the base of the rear lid striker is the
G525/G526 rear lid closed sensor. Due to its
position, debris that enters the striker housing can
get caught in the switch mechanism and cause
incomplete switch actuation (Figure 3).

Figure 3. Debris in the rear lid closed sensor.

Production Solution
The rear lid closed sensor assembly which includes an additional enclosure to protect the switches from debris
ingress is now installed. This improves the debris resistance of the switches but cannot eliminate it entirely.

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© 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.

Service
1.

Press down the striker cover on the loading sill
cover -A- (Figure 4).

Figure 4. Striker cover opening.
2.

If debris is found to be obstructing proper switch
activation/deactivation, activate the switch
paddles using your fingers and remove the
debris. Using compressed air is effective.
Then check the measuring values for the G525
and G526 switches and replace the rear lid
closed sensor, if the malfunction persists. Only
the improved rear lid closed sensor with the
protective enclosure is available.

Figure 5. Debris trapped in the rear lid closed sensor.

Warranty
Claim Type:

 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.

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© 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.

 If the vehicle is outside any warranty, this Technical Service Bulletin is
informational only.
Service Number:

9661

Damage Code:

0015

Labor Operations:

Luggage compartment rear trim remove and 7006 1900
reinstall

See SRT with
associated
operations

Lock carrier cover remove and reinstall

7039 1950

See SRT with
associated
operations

Rear Lid Closed Sensor G525/G526 replace 9661 1950

See SRT with
associated
operations

Or

Diagnostic Time:

Claim Comment:

Rear Lid Closed Sensor G525/G526 – clear
with compressed air

9661 1999

30 TU

GFF

0150 0000

20 TU

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

No allowance

0 TU

As per TSB #2047618/5

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.

Required Parts and Tools
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number

Part Description

Quantity

See ETKA

Rear Lid Closed Sensor

01

See ETKA

Fasteners, Bolts, Nuts, and Screws as needed per the
Repair Manual

See ETKA/ELSA

Page 4 of 5
© 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.

Additional Information
All parts and service references provided in this TSB (2047618) are subject to change and/or removal.
©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.

Page 5 of 5
© 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.