Recall 5321K Fuel Pump May Fail – 2018-2020 Mazda

November 12, 2021 NHTSA CAMPAIGN NUMBER: 21V875000

Fuel Pump May Fail

Fuel pump failure may cause an engine stall, increasing the risk of a crash.

 

NHTSA Campaign Number: 21V875

Manufacturer Mazda North American Operations

Components FUEL SYSTEM, GASOLINE

Potential Number of Units Affected 121,038

 

Summary

Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and deform, potentially causing the fuel pump to fail.

 

Remedy

Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda’s number for this recall is 5321K.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 

Check if your Mazda has a Recall

 


Safety Recall 5321 K- Multi-Model Fuel Pump May Fail -All Models

REPAIR PROCEDURE

1. Remove the Fuel Pump Unit per MGSS. For MX-5 Refer to 5321 K MX-5 Repair Supplement – for the specific procedure to remove from the vehicle.

Click below for the links to the standard procedure.

WITHOUT CYLINDER DE-ACTIVATION – FUEL PUMP REMOVAL

WITH CYLINDER DE-ACTIVATION – FUEL PUMP REMOVAL

 

NOTE: FUEL PUMP CAP REMOVAL-All CX-3 & Mazda2 (US Territory and Mexico) only. To remove the pump, you must use SST 49 F042 001 which is a required SST for all Mazda dealerships.

CX-3 and Mazda2 FUEL PUMP CAP REMOVAL

 

Fuel Tanks Screws – Rusted/Sheared (all Models except CX-3 and Mazda2):

We encourage you to order Mazda part# 9983-30-408 which is on backorder. Until supply is readily available, locally sourced screws are allowed following the specific guidelines below. One source for the screws that is nationally available in the USA is McMaster-Carr SKU 94387 A240 https://www.mcmaster.com/94387A240/ however, substitutes meeting specifications below are acceptable for use.

 

Fuel pump disassembly/ assembly procedure

This repair procedure has combined both Type A and Type B fuel pumps which has the same removal / installation procedure. It is also the same in the supplemental VIDEO’s below which must be reviewed prior to repair.

Please watch both videos prior to repairing:

Type A Repair video link

Type B Repair video link NOTE: This link shows a CX-5 Non-turbo AWD pump removal

CAUTION: The disassembly surface must be clean and flat as in the videos. Do not dissemble on a non-flat surface. Be very careful with handling the FDM unit as the fittings or hoses can break OR crack during removal or reassembly of the FDM unit. Damage caused by technician error is not reimbursable under the campaign or warranty.

 

Safety Recall 5321 K- Multi-Model Fuel Pump May Fail – MX-5 ONLY

Repair Procedure

Please watch the video prior to repairing:

MX-5 Repair Video Link

 


Chronology of Defect

Fuel pump may fail on MY2019 and  MY2020 Mazda2, MY2018 Mazda3, MY2018 Mazda6, MY2019 CX-3, MY2018 and MY2019 CX-5, MY2018 and 2019 CX-9, MY2018 and MY2019 MX-5

March 26, 2019: Mazda received the first field information from outside the U.S, which reported the engine could not start due to an inoperative fuel pump. Mazda planned to collect the fuel pump from the subject vehicle and investigate it.

April 2019 through August 2019: As a result of parts investigation, it was confirmed that the fuel pump did not function because the deformed impeller in the fuel pump interfered with the fuel pump body. As part of the analysis, additional observations of cracking on the impeller surface were made. To understand the relationship between surface cracks and impeller deformation, Mazda began an investigation to attempt to determine which factors potentially contribute to cracking.

September 17, 2019: Mazda decided to conduct a recall for the purpose of confirming the root cause of the defect on CX-5 in China.

September 2019 through February 2020:As part of the investigation, Mazda hypothesized that testing solvent used during the manufacturing process and low density impellers may be factors causing impeller cracking and began duplication testing. During the test, the surface of the impeller cracked as the solvent dried over time. It was confirmed that fuel pumps produced with impellers of lower density exposed to production drying solvent for longer periods of time could experience the impeller cracking at a level that could lead to excessive fuel absorption, and could cause impeller deformation.

May, 2020: Mazda received no field information regarding this defect from the U.S or U.S territories. As a result of examination about the details of field information received from outside the U.S, Mazda found that there was a difference in occurrence rate among each region and hypothesized the high ambient temperature condition of usage environment may contribute to the occurrence of this defect.

July 10, 2020: Mazda decided to conduct a recall campaign on certain vehicles in China, South-eastern Asia, Central America, and the Middle East, where ambient temperature are relatively high. Since this defect did not seem to occur as often in other countries, Mazda determined to monitor future occurrence in other countries including the U.S and U.S territories. Concurrently, Mazda submitted a foreign recall report regarding this issue to NHTSA. In the report, Mazda explained that due to differences in U.S. logistic conditions, typical customer usage and other factors, this defect was not likely to occur in U.S. market vehicles. The U.S. market field data at that time supported this assessment. Mazda would continue to monitor the U.S. and U.S. Territories for future occurrences.

August 20, 2020: Mazda received the first field information on MY2019 CX-9 from the U.S market, reporting the vehicle experienced a lack of power due to this defect.

September, 2020 through January, 2021: Mazda recognized this failure was beginning to increase in some countries other than the U.S.

July 30, 2021: Mazda decided to conduct a recall campaign on a certain vehicle model in Mexico due to increasing field occurrences in that market.

August 6, 2021: Mazda submitted a foreign recall report regarding this issue to NHTSA. In the report, Mazda explained that due to differences in U.S. logistic conditions, typical customer usage and other factors, this defect was not likely to occur in U.S. market vehicles. The U.S. market field data at that time supported this assessment. Mazda would continue to monitor the U.S. and U.S. Territories for future occurrences.

August, 2021: Mazda recognized this failure was beginning to increase on a certain vehicle in Europe.

September 1, 2021: Mazda received the fourth field information on MY2018 CX-5 from the U.S market, reporting that fuel pressure was reduced.

Late August, 2021 through September, 2021: This defect frequency continued to increase in Australian markets. Although this defect continues to have a low rate of occurrence in the U.S at present, Mazda began to make arrangements for remedy parts correcting this defect as a precaution in case of global field action. Mazda had received four related field reports from the U.S and U.S territories up to this date.

November 5, 2021: Mazda held a Quality Audit Committee meeting to review all available information to date, and out of an abundance of caution, determined to conduct a proactive field action on certain MY2019 and  MY2020 Mazda2, MY2018 Mazda3, MY2018 Mazda6, MY2019 CX-3, MY2018 and MY2019 CX-5, MY2018 and 2019 CX-9, MY2018 and MY2019 MX-5 in the U.S and the U.S territories. No accidents, injuries or deaths have been reported as a result of this defect.

July 21, 2022: Mazda has discovered that a certain part number in the involved components section was omitted in the original defect information report for this campaign. Mazda is amending this submission to add the previously omitted part number, PE01-13350. This addition does not affect the number, model, or model years of involved vehicles subject to this campaign.

 


11 Affected Products

Vehicles

MAKEMODELYEAR
MAZDACX-32019
MAZDACX-52018-2019
MAZDACX-92018-2019
MAZDAMAZDA22019-2020
MAZDAMAZDA32018
MAZDAMAZDA62018
MAZDAMX-52018-2019

 


37 Associated Documents

Manufacturer Notices(to Dealers,etc) – Preliminary Notification to Owners as Parts Not Available Safety Emissions Recall 5321K -Multi-Model Fuel Pump May Fail: January 4, 2022

RCMN-21V875-6201.pdf 611.03KB

 


ISSUED Interim Owner Notification Letter(Part 577)

RIONL-21V875-1035.pdf 707.995KB

 


Manufacturer Notices(to Dealers,etc) – Notification of Safety and Emissions Recall 5321K – Multi-Model Fuel Pump May Fail: November 16, 2021

RCMN-21V875-5485.pdf 518.941KB

 


ISSUED Interim Owner Notification Letter(Part 577)

RIONL-21V875-0791.pdf 632.685KB

 


Parts & Warranty Information Recall Campaign 5321K: January 4, 2022

RMISC-21V875-5718.pdf 743.039KB

 


Remedy Instructions and TSB

RCRIT-21V875-3186.pdf 2961.988KB

 


Remedy Instructions and TSB

RCRIT-21V875-4233.pdf 1285.811KB

 


Defect Notice 573 Report

RCLRPT-21V875-1378.PDF 219.354KB

 


Chronology

RMISC-21V875-0229.pdf 14.882KB

 


Recall Acknowledgement

RCAK-21V875-2835.pdf 645.646KB

 


Remedy Instructions and TSB

RCRIT-21V875-1829.pdf 3077.855KB

 


Remedy Instructions and TSB

RCRIT-21V875-7690.pdf 1381.302KB

 


Manufacturer Notices(to Dealers,etc)

RCMN-21V875-5698.pdf 593.294KB

 


Remedy Instructions and TSB

RCRIT-21V875-9201.pdf 3098.308KB

 


Remedy Instructions and TSB

RCRIT-21V875-6708.pdf 1377.519KB

 


Remedy Instructions and TSB

RCRIT-21V875-4039.pdf 1329.625KB

 


Remedy Instructions and TSB

RCRIT-21V875-9790.pdf 3118.466KB

 


ISSUED Owner Notification Letter(Part 577)

RCONL-21V875-3397.pdf 772.817KB

 


Recall 573 Report – July 21, 2022

RCLRPT-21V875-3022.PDF 219.412KB

 


Parts & Warranty Information

RMISC-21V875-2581.pdf 790.714KB

 


ISSUED Owner Notification Letter(Part 577)

RCONL-21V875-9928.pdf 690.893KB

 


Chronology of Defect

RMISC-21V875-3036.pdf 29.531KB

 


Remedy Instructions and TSB

RCRIT-21V875-6529.pdf 3238.945KB

 


Remedy Instructions and TSB

RCRIT-21V875-2836.pdf 3286.443KB

 


Remedy Instructions and TSB

RCRIT-21V875-0772.pdf 1349.217KB

 


Parts & Warranty Information

RMISC-21V875-0697.pdf 1001.972KB

 


Manufacturer Notices(to Dealers,etc)

RCMN-21V875-4411.pdf 264.951KB

 


Manufacturer Notices(to Dealers,etc)

RCMN-21V875-2809.pdf 227.319KB

 


Manufacturer Notices(to Dealers,etc)

RCMN-21V875-8442.pdf 256.816KB

 


Parts & Warranty Information

RMISC-21V875-4302.pdf 1120.408KB

 


Manufacturer Notices(to Dealers,etc)

RCMN-21V875-3934.pdf 352.233KB

 


Manufacturer Notices(to Dealers,etc)

RCMN-21V875-3742.pdf 503.207KB

 


Miscellaneous Document

RMISC-21V875-7042.pdf 136.752KB

 


Remedy Instructions and TSB

RCRIT-21V875-7770.pdf 3473.071KB

 


Manufacturer Notices(to Dealers,etc)

RCMN-21V875-7244.pdf 179.1KB

 


Recall Quarterly Report #1, 2022-3

RCLQRT-21V875-9648.PDF 211.136KB

 


ISSUED Renotification Notice

RCRN-21V875-4511.pdf 651.534KB

 


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