A9019292056123_1

90 Emergency Assist: unexpected seatbelt tugging with brief reductions in speed
90 19 29 2056123/1 September 30, 2019.
Model(s)
Year
VIN Range
A6, A7, A8,
Q8, and
Audi e-tron
quattro
2019 - 2021
All
Vehicle-Specific Equipment
With Adaptive Cruise Assist
Condition
Customer states:
 The vehicle tugs on the seatbelt three times.
 Brief reductions in speed are experienced.
 No obvious causes for those symptoms like vehicles
driving in front of the customer’s vehicle are
apparent
 The following messages (Figure 1 and Figure 2)
may have appeared in the instrument cluster.
 The seatbelt functions as normal otherwise.
Figure 1. Emergency assist active warning.
Page 1 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.
Figure 2. Emergency assist cancelled notice.
Workshop findings:
 Some DTCs might be stored in the driver assistance control module, J1121 (address word 00A5).
 DTCs shown with the exclamation mark in a triangle symbol in the ODIS test plan can be ignored.
Technical Background
The emergency assist (EA) observes steering wheel input while driving to determine if the driver is actively driving
the vehicle.
If too little steering input is observed over speed and environment depending on the time interval, the system
assumes the driver to be incapacitated and starts a warning cascade in order to regain the driver’s attention.
This includes tugging on the seatbelt and utilizing the brakes three times in rapid succession.
After multiple unsuccessful attempts to regain the driver’s attention, the system stops the vehicle, turns the
hazards on and, after a 30 second grace period, activates the emergency call feature.
Since the EA depends on steering wheel torque to determine the presence of the driver, it can falsely determine
the driver to be incapacitated if not enough momentum is perceived on the steering wheel.
This might happen on long straight roads or if the driver does not firmly grip the steering wheel.
If the driver deactivates adaptive cruise assist as well as active lane departure warning, no audible warning will be
given prior to EA engaging. In this case, the only visual cue is a message in the instrument cluster that is
displayed for a couple seconds before the haptic warning cascade is activated.
Production Solution
Not applicable.
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.
Service
No repair is required.
1. Do not perform any repairs. Any repairs for this concern may be denied.
2. Explain the behavior of the emergency assist to the customer. The vehicle is functioning as designed.
3. Show the customer how the emergency assist can be deactivated via the driver assist settings in individual
mode.
Warranty
This TSB is informational only and not applicable to any Audi Warranty.
Additional Information
More information on this system can be found in the following resources:
 Owners Manual: Section “Emergency Assist”.
All part and service references provided in this TSB (2056123) 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 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.