04-001-19-3556

Technical
Service Bulletin
Mazda North American Operations
Irvine, CA 92618-2922
Subject:
CLUNK / BANG / BUZZ NOISE DURING FIRST FORWARD MOVEMENT
AFTER SITTING
Bulletin No.: 04-001/19
Last Issued: 01/03/2019
BULLETIN NOTES
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red.
Previously Issued TSBs: Date(s) Issued Previously Issued TSBs:
Date(s) Issued
04-003/18
04/02/18
04-006/10
10/22/10 and 11/23/10
04-003/16
02/23/16
04-007/08
11/17/08
04-002/14
01/21/14
04-009/06
11/16/06
04-002/12
03/31/12
APPLICABLE MODEL(S)/VINS
2013-2019 CX-5 2011-2014 Mazda2 2007-2019 Mazda3 2016-2019 CX-3
2006-2015 Mazda5 2007-2012 CX-7 2006-2019 MX-5
2004-2011 RX-8 2007-2019 CX-9 2014-2019 Mazda6
DESCRIPTION
Some customers may report a slight clunk/bang/buzz noise or jolt from the front of the vehicle. This concern
will most likely occur during the vehicles first forward movement after starting the engine. This is a normal
operating noise of the Anti-Lock Brake System (ABS). Do not attempt any repairs.
If you encounter a customer complaint for this concern, explain that the noise comes from the
ABS/TCS/DSC “Malfunction Detection Function” initial check and that there is no problem. This initial check
is a necessary function to ensure the normal operation of the ABS/TCS/DSC system. It occurs when the
vehicles first moves forward under the following conditions.
NOTE: Some customers may describe that the noise does not occur all the time. It does occur all the time,
but the sound is more likely to be heard on a slow start and not on a quick start (quick acceleration) when
engine noise is louder.
Page 1 of 2
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.
© 2019 Mazda North American Operations, U.S.A.
Bulletin No.: 04-001/19
Last Issued: 01/03/2019
Condition
The brake pedal is released (normal take-off)
The brake pedal is pressed (running on a
downhill or creeping along on A/T vehicles)
With DSC
The initial check start at 4
mph (6 km/h) or more.
The initial check start at 9
mph (15 km/h) or more.
Without DSC
The initial check start at 3
mph (4 km/h) or more.
The initial check start at 6
mph (10 km/h) or more.
Page 2 of 2
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.
© 2019 Mazda North American Operations, U.S.A.