A401765 2047920-

Service Bulletin Details

Public Details for: A401765 2047920-

The bulletin contains diagnosis information for noises on the front end of the vehicle. Potential rolling sounds.


- 2018 - 2017 -

40 Noises from front end and dash panel, rolling noises
40 17 65 2047920/1 May 24, 2017.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A4, A5, Q7
2017 - 2018
All
Not Applicable
Condition
 The customer states that there is a buzzing, booming, humming, whistling or a similar noise from the front end.
The noises can possibly be heard from the area the steering or behind the dash panel. The noises may also
suspected to be tire rolling noises.
 The noises can be reproduced in a test drive.
Technical Background
Mechanical damage on the wheel bearing of the front axle.
Production Solution
Not applicable.
Service
The noises from the wheel bearing can be transmitted via the steering into the vehicle interior.
Because of the close proximity it can be difficult to distinguish them from tire rolling noises.
Therefore with such noises check whether the wheel bearings of the front axle may be the
source and replace the affected component. The following steps are helpful:
1. Does the frequency rise as the speed increases or does the sound get higher?
2. Does the noise get louder when steering?
3. Is the noise still there when slowing down?
4. Is the noise amplified on the steering wheel/airbag well?
5. Can the vibrations be felt on the unpressed coil spring when the wheel is turning?
Page 1 of 3
© 2017 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.
6. When swapping around the wheel bearings does the noise move with a particular bearing?
Tip:
Please precisely locate the source of the noise with acoustic testers. It is possible that a noise
perceived on the left side of vehicle is caused by the right wheel bearing. The front wheel
bearings should not be replaced in pairs.
If the cause of the noise cannot be traced to a wheel bearing, continue the analysis on other
components.
Warranty
Claim Type:
 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
4057
Damage Code:
0020
Labor Operations:
A4 & A5 one front wheel bearing
Remove and install front
hub with bearing
4067 1900
80 TU
Replace front wheel
bearing
4057 5550
40 TU
A4 & A5 both front wheel bearings
Remove and install 2 front
hubs with bearings
4067 2000
140 TU
Replace 2 front wheel
bearings
4057 5650
70 TU
Q7 one front wheel bearing
Remove and install front
hub with bearing
4067 1900
90 TU
Replace front wheel
bearing
4057 5500
130 TU
Page 2 of 3
© 2017 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.
Q7 both front wheel bearings
Diagnostic Time:
Remove and install both
front wheel bearings
4067 2000
160 TU
Replace 2 front wheel
bearings
4057 5600
230 TU
GFF
No allowance
0 TU
Road test prior to service
procedure
0121 0002
10 TU
Road test after service
procedure
0121 0004
10 TU
Technical diagnosis at dealer’s discretion
(Refer to Section 2.2.1.2 and Audi Warranty Online for DADP allowance details)
Claim Comment:
As per TSB #2047920/1
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
Part Number
Part Description
Quantity
See ETKA
Wheel bearings
(Up to 2)
Additional Information
All parts and service references provided in this TSB (2047920) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
©2017 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
© 2017 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.


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