# Service bulletin MT\-004\-20

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.

- Type: Service bulletin
- NHTSA id: 10183602
- Published by NHTSA: 2020\-12\-03
- Manufacturer's number: MT\-004\-20
- Manufacturer's date: 2020\-11\-03
- NHTSA component: EQUIPMENT; FUEL SYSTEM, GASOLINE

## NHTSA's summary

Some customers may complain about a tapping or knocking noise coming from the rear seat after fuel fill. The concern will likely occur if the fuel tank is overfilled \(more fuel is added after the fuel pump nozzle shuts off automatically\) or filled up normally in high ambient temperatures and the fuel expands.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10183602-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10183602-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Equipment and accessories, Fuel system

## Vehicles listed

- 2016 to 2020 MAZDA CX\-3

## Recalls for the same vehicles and component

- [2021696](/recalls/tc/2021696.md), 2021-11-12: Fuel System
- [21V875000](/recalls/nhtsa/21V875000.md), 2021-11-12: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

## Other bulletins for the same vehicles and component

- [SA\-023\-26](/bulletins/11032019.md), 2026-05-04, Service bulletin: FUEL/PROPULSION SYSTEM. This Service Alert supersedes the previously issued M\-Tip\(s\) listed below. The changes are noted in Red text. MT\-003/22 03/02/22 DESCRIPTION Some customers may complain about a tapping or knocking noise coming from the rear seat after fuel fill. The concern will likely occur if the fuel tank is overfilled \(more fuel is added after the fuel pump nozzle shuts off automatically\) or filled up normally in high ambient temperatures and the fuel expands. No repair is needed. Explain to the customer not to continue filling after nozzle shut off.
- [CSP12](/bulletins/11011345.md), 2024-12-04, Warranty extension: FUEL/PROPULSION SYSTEM; ENGINE. CUSTOMER SERVICE PROGRAM CSP12 \- DENSO LOW\-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a recall campaign. Repairs are not to be made unless there is a confirmed low\-pressure fuel pump failure within the coverage period. As of November 18, 2024 Repair Procedures and Parts and Warranty documents are available.
- [CSP12 Repair](/bulletins/11011341.md), 2024-12-04, Warranty extension: ENGINE; FUEL/PROPULSION SYSTEM. CUSTOMER SERVICE PROGRAM CSP12 \- DENSO LOW\-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a recall campaign. Repairs are not to be made unless there is a confirmed low\-pressure fuel pump failure within the coverage period. As of November 18, 2024 Repair Procedures and Parts and Warranty documents are available.
- [CSP12 Repair MX5](/bulletins/11011338.md), 2024-12-04, Warranty extension: FUEL/PROPULSION SYSTEM; ENGINE. CUSTOMER SERVICE PROGRAM CSP12 \- DENSO LOW\-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a recall campaign. Repairs are not to be made unless there is a confirmed low\-pressure fuel pump failure within the coverage period. As of November 18, 2024 Repair Procedures and Parts and Warranty documents are available.
- [CSP12 Parts Warr](/bulletins/11011336.md), 2024-12-04, Warranty extension: ENGINE; FUEL/PROPULSION SYSTEM. CUSTOMER SERVICE PROGRAM CSP12 \- DENSO LOW\-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a recall campaign. Repairs are not to be made unless there is a confirmed low\-pressure fuel pump failure within the coverage period. As of November 18, 2024 Repair Procedures and Parts and Warranty documents are available.
- [CSP12 FAQs](/bulletins/11011331.md), 2024-12-04, Warranty extension: FUEL/PROPULSION SYSTEM; ENGINE. CUSTOMER SERVICE PROGRAM CSP12 \- DENSO LOW\-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a recall campaign. Repairs are not to be made unless there is a confirmed low\-pressure fuel pump failure within the coverage period. As of November 18, 2024 Repair Procedures and Parts and Warranty documents are available.
- [CSP12 Dealer Letter](/bulletins/11011326.md), 2024-12-04, Warranty extension: ENGINE; FUEL/PROPULSION SYSTEM. CUSTOMER SERVICE PROGRAM CSP12 \- DENSO LOW\-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a recall campaign. Repairs are not to be made unless there is a confirmed low\-pressure fuel pump failure within the coverage period. As of November 18, 2024 Repair Procedures and Parts and Warranty documents are available.
- [SA\-027\-24](/bulletins/10254187.md), 2024-05-04, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; UNKNOWN OR OTHER. Some customers may complain about infotainment center display. Peeling, spider cracks and white dots.
- [SA\-008\-24](/bulletins/10251368.md), 2024-03-06, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. Use the symptom troubleshooting tables below to diagnose MAZDA CONNECT concerns.
- [09\-003\-23b](/bulletins/10248385.md), 2024-01-06, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT. Some customers may complain about infotainment center display: Center display touchscreen operates by itself \(Ghost Touch\). The film of the center display may be peeled off. White dots may appear on the center display NOTE: The occurrence of the symptoms depends on the vehicle model and the parts.

JSON: [/v1/bulletins/10183602](/v1/bulletins/10183602)

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