A1719982028440_4

17 Range display (distance to empty) in on-board computer
17 19 98 2028440/4 August 30, 2019. Supersedes Technical Service Bulletin Group 17 number 15-68 dated
December 10, 2015 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All
2005 - 2021
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
4
-
Revised header (Added model years)
3
12/10/2015
Revised header (Added model years)
2
04/03/2014
Revised header (Added model years)
Revised entire bulletin for clarity
The customer states of one or more of the following issues:
 When the vehicle is completely refueled, the vehicle range (“distance to empty”) that is displayed is different
than the vehicle range that was displayed the last time the vehicle was completely refueled.
 The displayed vehicle range drops inconsistently.
 After the vehicle is refueled, the displayed vehicle range does not change for a long period of time.
 When the vehicle is driven on hilly roads for a long period of time, the displayed vehicle range suddenly
changes by a significant amount.
Workshop findings:
 There are no DTCs related to fuel senders stored in the instrument cluster control module, J285 (address word
0017).
 This condition does not involve or affect the accuracy of the fuel level indicator, but only the estimated distance
to empty display on the on-board computer.
Technical Background
The primary purpose of the vehicle range display is to help prevent the vehicle from running out of fuel. As soon
as the fuel gauge needle enters the red zone (well before the tank is empty), an audible warning and a low fuel
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© 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.
indicator light activate, and the vehicle range display may show 0 miles (see owner’s manual for reserve fuel
capacity volume).
The average and instant consumption figures shown in the on-board computer are not used for calculating the
range. Instead, the range is calculated using an internal weighted value. Two different calculation methods (filter
algorithms) are used for determining the range display.
For vehicles older than model year 2009:
Only consumption figures of the last 50 kilometers (31 miles) are included in the calculation. The last kilometer
has the most weight and the first kilometer has the lowest.
If the vehicle is driven efficiently right before the vehicle is refueled, the displayed vehicle range could be much
higher than it was after the previous fill-up. Conversely, if the vehicle is driven aggressively right before the
vehicle is refueled, the displayed vehicle range could be much lower than it was after the previous fill-up
For vehicles from model year 2009 and newer:
A gradual driving profile is built from the last 50 kilometers (31 miles) and from the last 500 kilometers (310 miles).
The short-term consumption figures over the last 50 kilometers (31 miles) and the long-term figures over 500
kilometers (310 miles) are included in the calculation, which is also based on the tank volume. With this method,
the range display can only rise when the vehicle is driven efficiently for extended periods, resulting in a more
accurate vehicle range.
Tip: In both methods, the range display after fill-up depends on the driving style before fill-up, so the range
displayed after fill-up will not always be the same. In addition, the displayed vehicle range does not refer to the
whole tank volume; it only indicates a trend based on the short-term to medium-term fuel consumption.
Production Solution
Not applicable
Service
Explain the Technical Background to the customer.
Warranty
This TSB is informational only and is not applicable to any Audi Warranty.
Additional Information
Page 2 of 3
© 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.
All parts and service references provided in this TSB (2028440) 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. 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 3 of 3
© 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.