A9419132017806_1

94 Vehicle lights malfunction message in instrument cluster, DTC 03280, 01800 or B126AF0 stored in the
vehicle module
94 19 13 2017806/12 September 17, 2019. Supersedes Technical Service Bulletin Group 94 number 15-64 dated
March 4, 2015 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A5
2010 - 2020
All
Not Applicable
Q3
2015 - 2020
All
Not Applicable
Q7
2017 - 2020
All
Not Applicable
A4, Q5
2009 - 2020
All
Not Applicable
A8, TT
2011 - 2018
All
Not Applicable
A6, A7
2012 - 2018
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
12
-
Revised header (Updated model years for (A3, A4, A5, A6, A7, A8 Q5,
and Q7)
Revised Condition (Updated faults for current models)
Revised Technical Background (Added information)
11
03/05/2015
Revised header (Added Q3 and TT)
10
02/12/2015
Revised header (Added model year; added A3)
Revised Technical Background (Added picture for clarity)
Customer states:
 The light bulb warning light is displayed in the instrument cluster with the following message: “Vehicle lights:
malfunction”.
Workshop findings:
 Exterior lights are functioning properly.
One of the following DTCs is stored in the vehicle electrical system control module, J519 (address word 0009):
 DTC 03280 (Light switch position implausible signal).
 DTC 01800 (Light switch E1, no signal/communication).
Page 1 of 4
© 2019 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 B126AF0 (Light switch implausible switch position).
Technical Background
If the headlight switch is moved to an intermediate position and
remains there (Figure 1), the light bulb warning light and the
error message appear after approximately ten seconds (Figure
2).
Figure 1. A headlight switch in an intermediate
position.
Figure 2. The warning light and error message
in the instrument cluster display.
Once displayed, the message turns off after approximately five seconds. The light bulb warning light turns off
only after the headlight switch is turned to a defined position, and the status of DTC 03280, DTC 01800 or DTC
B126AF0 are changed to sporadic.
After 40 driving cycles without an implausible signal detected, the DTCs are automatically cleared.
Page 2 of 4
© 2019 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.
It is possible a faulty switch can cause the same faults and
warning. For faults that are static or concerns able to be reproduced, use the MVBs within the 09 module to determine if
the light switch position can be properly detected.
If the MVB does not match the physical position of the headlight
switch, the switch is faulty.
In Figures 3 and 4 below, the intermediate position of the rotary
Figure 3. Switch in an intermediate position
knob is correctly detected in the MVBs of the 09 module. This is
(2018 A4).
normal and does not indicate a faulty component. In this case,
explain the operation to the customer.
Figure 4. The corresponding MVB showing the implausible switch position (2018 A4).
Production Solution
Not applicable.
Service
Determine if the above situation applies to the vehicle, and explain the Technical Background to the customer.
Replacing parts does not change the behavior.
Warranty
This TSB is informational only and not applicable to any Audi Warranty.
Page 3 of 4
© 2019 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 part and service references provided in this TSB (2017806) 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.
©2019 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 4 of 4
© 2019 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.