A9019192032113_2
Service Bulletin Details
Public Details for: A9019192032113_2
This information bulletin contains a background on the outside air temperature reading. 2008-2020 a3, 2015-2020 a3 cabrio, 2008-2016 a3 sportback, 2008-2020 a4, 2010-2020 a4 allroad, 2008-2012 a4 avant, 2008-2009 a4 cabrio, 2010-2020 a5 ca
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90 Outside air temperature reading: general information 90 19 19 2032113/2 June 21, 2019. Supersedes Technical Service Bulletin Group 90 number 12-38 dated December 7, 2012 for reasons listed below. Model(s) Year VIN Range Vehicle-Specific Equipment All except Audi e-tron quattro 2008 - 2020 All Not Applicable Condition REVISION HISTORY Revision Date Purpose 2 - Revised header (Added MY 2015 to 2020) 1 12/07/2012 Initial publication Customer states: The outside ambient temperature display is incorrect. Technical Background To achieve a smoothening effect of the displayed outside ambient temperature, the value shown does not instantaneously follow the temperature sensor measurement. The display will not change faster than 4° F (2° C) per minute. This concept applies to both falling and rising temperatures. A programming strategy is also implemented to avoid incorrect readings on a parked vehicle, due to the temperature sensor being affected by outside influences such as radiant heat from the engine bay, elevated road surface temperatures, etc. Incorrect readings are avoided through the following logic: After switching the ignition on, temperature changes are only shown after 30 seconds for a stationary vehicle (vehicle speed = zero and engine switched off). Only when the vehicle drives faster than 12 mph (20 km/h), rising temperature values are displayed during the first 3 miles (5 km). If the measured ambient temperature is above the displayed value but falling, the display is not changed. When the coolant temperature reaches 104° F (40° C) and the speed drops to under 12 mph (20 km/h), only falling ambient temperature values are shown. For example, in stop and go traffic when the vehicle is often below 12 mph (20 km/h), it can take some time before the displayed temperature is correct. If the conditions above are noted during these typical driving scenarios, the sensor is not at fault and does not need to be replaced. Page 1 of 2 © 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. Production Solution Not applicable. Service Explain the operation to the customer. Warranty This TSB is informational only and not applicable to any Audi Warranty. Additional Information All part and service references provided in this TSB (2032113) 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 2 of 2 © 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.