A4223522068250_2

Technical Service Bulletin
42 Booming noise from rear area while vehicle is moving (depending on vehicle speed/wheel speed) DTC
P18F100
42 23 52 2068250/2 June 6, 2023. Supersedes Technical Service Bulletin Group 42 number 22-50 dated
November 4, 2022, for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
Q4 etron, and Q4
2022 – 2024
Sportback e-tron
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised header (Added Model Year)
Revised Warranty (Revised Labor Operations)
1
11/04/2022
Initial publication
Customer states:
• Depending on the vehicle speed/wheel speed, a booming noise can be heard from the rear of the vehicle.
and/or
• The vehicle judders slightly (only noticeable when driving slowly), both when driving forwards and in reverse.
Note: To ensure the noise/complaint can be clearly assigned, please scan the QR Code below (Figure 1):
Figure 1: This QR Code directs to https://audi-external.kzoplatform.com/player/medium/2338505660880131388
when scanned.
Workshop findings:
• The customer statement can be reproduced.
Page 1 of 7
© 2023 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.
Technical Service Bulletin
The following DTC (passive/intermittent) may be logged in the electric drive control unit J841 (diagnostic address
0051):
• P18F100: Function limitation due to deviating wheel speeds (passive/intermittent).
The noise can no longer be heard in the following circumstances:
• If the vehicle is rolling in position "N".
If the wiring harness connector of any wheel speed sensor of the affected axle (front/rear) is disconnected (this
affects the control behavior of the electric drive motor).
Technical Background
Foreign metallic particles in the area of the wheel speed sensor/wheel hub/wheel bearing/drive shaft (see figure 1,
red circle) lead to implausible wheel speed signals.
The foreign metallic particles may be in non-visible areas.
Note:
• In order to test/analyze whether foreign metallic particles are present, it is necessary to expose/remove the
corresponding components.
• If there are additional DTCs stored, please follow GFF to solve the issues.
Page 2 of 7
© 2023 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.
Technical Service Bulletin
Figure 2: Metallic particles in the speed sensor.
Figure 3: Metallic particles in the hub.
Page 3 of 7
© 2023 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.
Technical Service Bulletin
Figure 4: Metallic particles/damage in the wheel
hub/bearing.
Figure 5: Metallic particles/damage in the wheel
hub/bearing.
Production Solution
Not Applicable
Service
1. Check components for foreign metallic particles:
a. Expose/remove the relevant components (wheel speed sensor/wheel hub/wheel bearing/drive shaft)
according to the Repair Manual
b. Check components (wheel speed sensor/wheel hub/wheel bearing drive shaft) for foreign metallic particles.
c. If there are no foreign metal particles, this TSB does not apply.
d. Go to Step 2 if foreign metallic particles are found.
2. Remove foreign metallic particles, check components for damage, and replace components if
necessary.
Page 4 of 7
© 2023 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.
Technical Service Bulletin
a. Thoroughly remove foreign metallic particles from the components with workshop materials.
Note: Do not use magnetic tools to remove metallic particles from components.
3. Check components for damage:
a. If there is no damage to the components, no further work is required. In this case, reinstall the previously
removed/exposed components according to the Repair Manual.
b. Delete DTCs.
4. Replace components (if necessary):
a. If there is damage to the components, replace them according to the Repair Manual (only if necessary).
b. Delete all DTCs.
Warranty
Claim Type
• 110 up to 48 Months/50,000 Miles.
• G10 for CPO Covered Vehicles – Verify Owner.
• If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
4267
Damage Code:
0010
Labor Operations:
Remove and install 1 wheel speed sensor
4515 1999
10 TU
Remove and install wheel hubs with bearings
4267 19XX
See SRT with
associated
operations.
Check 1 wheel hub and speed sensor for
foreign metallic particles and clean
4267 0199
10 TU
Remove and install 2 wheel speed sensors
4515 2099
20 TU
Remove and install 2 wheel hubs with
bearings
4267 20XX
See SRT with
associated
operations.
Check 2 wheel hubs and speed sensors for
foreign metallic particles and clean
4267 0299
20 TU
Page 5 of 7
© 2023 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.
Technical Service Bulletin
Diagnostic Time:
Claim Comment:
Remove and install 1 drive shaft
4221 19XX
See SRT with
associated
operations.
Remove and install 2 drive shafts
4221 20XX
See SRT with
associated
operations.
GFF
0150 0000
Time stated on
the diagnostic
protocol (Max 70
TU)
Road test prior to the service procedure
0121 0002
10 TU
Road test after the service procedure
0121 0004
10 TU
As per TSB 2068250/2
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
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number
Part Description
Quantity
See ETKA
Fasteners, Bolts, Nuts, and Screws as needed per the
Repair Manual
See ETKA/ELSA
See ETKA
Wheel Speed Sensor(s)
(if necessary)
See ETKA
Wheel Hub with Bearing(s)
(if necessary)
Additional Information
All part and service references provided in this TSB (2068250) 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.
©2023 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
Page 6 of 7
© 2023 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.
Technical Service Bulletin
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 7 of 7
© 2023 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.