Service bulletin 04-001-20-3672

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10170657
Published by NHTSA	2020-01-23
Manufacturer's number	04-001-20-3672
Manufacturer's date	2020-01-08
NHTSA component	SERVICE BRAKES, HYDRAULIC

NHTSA's summary

Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes

Vehicles listed
MAZDA CX-7	2007, 2008, 2009, 2010, 2011
MAZDA CX-9	2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
MAZDA MAZDA2	2011, 2012, 2013, 2014, 2015
MAZDA MAZDA3	2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
MAZDA MAZDA5	2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
MAZDA MAZDA6	2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
MAZDA MX-5	2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
MAZDA RX-8	2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2003157	2003-06-18. Brakes
03V207000	2003-06-05. PARKING BRAKE:INDICATOR LIGHT

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SA-029-26	2026-05-05. Service bulletin. This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers. SCHEDULED MAINTENANCE Refer to the applicable Workshop Manual or Owner's Manual for vehicle -specific manufacturer scheduled maintenance. Workshop Manual - Refer to section 00-00 SCHEDULED MAINTENANCE. Owner's Manual - Refer to section 8 Maintenance and Care. b. Note: Please refer to the information below outlining the services not included in Mazda's Factory Scheduled Maintenance: IMPORTANT: Recommending fluid flushes when not necessary can lead to customer confusion and dissatisfaction. Fluid flushing for preventive maintenance purposes is strongly discouraged, unless otherwise specified in a published procedure (Owner’s Manual, Workshop Manual, Technical Service Bulletin, etc.).
SA-011-24	2024-03-06. Service bulletin. Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers.
00-001-22	2022-03-04. Service bulletin. Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers.
SA-012-21f	2021-07-02. Service bulletin. MAZDA CONNECTED SERVICES - FREQUENTLY ASKED QUESTIONS (FAQ): Index: General Questions, Setup and Getting Started, Registration / Enrollment, WI-FI General Information, WI-FI How-To, WI-FI Trial Period, Interacting With The App, Service Issues, Troubleshooting, Reception Level Inspection, Dealer Processes, Conditions for Remote Engine Start Will Not Function, Conditions for Remote Engine Start Function Will turn engine OFF, Educational Videos, Resources
SA-019-21	2021-03-03. Service bulletin. Some vehicles may exhibit a squeaking noise from front brakes when braking after sitting in cold and moist weather. Due to an increase in the resistance of the pads under cold conditions, the pads easily vibrate, causing the squeak noise.
00-001-20-3689	2020-04-03. Service bulletin. Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers.
04-001-19-3556	2019-02-19. Service bulletin. 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 checkis 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.
00-002-19-3561	2019-02-19. Service bulletin. Mazda North American Operations has approved an additional on-car brake lathe as an option for MNAO authorized equipment. The Pro-Cut On-Car Brake Lathe has been added to the MNAO authorized equipment program. NOTE: Accu-turn is still an approved brake lathe, but it is no longer available for purchase from our vendor. IMPORTANT: Rotors must be machined using a Mazda approved on-car brake lathe, or warranty claims are subject to denial or debit. Tool Number Description Pricing PC1923MAZ Pro-Cut On-Car Brake Lathe Check eStore or call for current pricing OBTAINING TOOLS This tool can be ordered through Mazda eStore. You can log on to eStore at: http://dealers.mazdausa.com CUSTOMER SERVICE INFORMATION For warranty or product information contact Mazda Authorized Service Equipment at 877-768-6657. Customer service representatives are available from 7:30 AM until 7:00 PM CST, Monday through Friday. SPECIAL SERVICE TOOL (SST) PART NAME: OVERVIEW Pro-Cut On-Car Brake Lathe PART NUMBER: PC1923MAZ APPLICABLE MODELS: All USAGE: To machine brake rotors on the vehicle.
04-002-19-3545	2019-02-19. Service bulletin. Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a customer complaint for any one of these symptoms, refer to the following information to understand why symptoms may occur, and to better assist the customer in resolving their specific brake concern.
00-003-18-3480a	2018-11-13. Service bulletin. Mazda North American Operations has approved an additional on-car brake lathe as an option for MNAO authorized equipment. The Pro-Cut On-Car Brake Lathe has been added to the MNAO authorized equipment program. NOTE: Accu-turn is still an approved brake lathe, but it is no longer available for purchase from our vendor. IMPORTANT: Rotors must be machined using a Mazda approved on-car brake lathe, or warranty claims are subject to denial or debit.