# Service bulletin 02\-015\-18\-3499a

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: 10152375
- Published by NHTSA: 2018\-12\-17
- Manufacturer's number: 02\-015\-18\-3499a
- Manufacturer's date: 2018\-11\-30
- NHTSA component: SUSPENSION:REAR:SPRINGS:COIL SPRINGS

## NHTSA's summary

Some vehicles may exhibit a knocking noise from the rear coil spring and/or the vehicle body sits lower in the rear. These symptoms may be caused by a broken rear coil spring at its lower side. This is caused by corrosion from dust between the rear coil spring and the spring sheet, resulting in a broken rear coil spring. To eliminate this concern, the shape of the rear coil spring has been modified.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10152375-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10152375-0001.pdf)

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

## Components

Suspension

## Vehicles listed

- 2013 to 2018 MAZDA CX\-5
- 2014 to 2018 MAZDA MAZDA3

## Recalls for the same vehicles and component

- [2016152](/recalls/tc/2016152.md), 2016-04-08: Suspension

## Other bulletins for the same vehicles and component

- [PF\-26\-02](/bulletins/11035603.md), 2026-08-04, Other: SUSPENSION. Supersession between B60S\-34\-300G/350G and B60S\-34\- 300H/350H. Please be advised that the G\-level and H\-level control arms are not interchangeable. The G\-level part cannot be used to repair a vehicle built with the H\-level. The H\-level part can be used to repair a vehicle built with the G\-level, but the ball joint retainer \(d\- Code 34\-552\) has been eliminated.
- [SA\-051\-25](/bulletins/11026350.md), 2025-12-05, Service bulletin: STEERING; SUSPENSION; POWER TRAIN; WHEELS. Noise, Vibration, and Harshness \(NVH\) Diagnostic Guidelines Diagnostic Guidelines When diagnosing NVH concerns, it is essential to first classify the issue into one of three primary categories: Noise, Vibration, or Harshness. Many customer complaints may involve overlapping symptoms, such as both noise and vibration, so identifying the dominant characteristic is critical. Once the primary symptom is determined, follow the appropriate diagnostic path. For example, if a concern includes both noise and vibration but is related to vehicle speed, the vibration diagnostic path should be followed. When considering component replacement during the diagnostic process, it is best practice to start with the lowest cost or most accessible part unless diagnostic evidence clearly identifies a more expensive or complex component as the root cause. This approach helps minimize repair costs and avoids unnecessary part replacements. For example, a growling or bearing whine noise may be mistakenly attributed to internal components in the differential, transfer unit, or transmission, when the actual source is a wheel bearing. Misdiagnosis like this can lead to unnecessary repairs, added time and cost. To help prevent this, always follow the guidelines in the repair procedure.
- [02\-003\-23](/bulletins/10244671.md), 2023-11-01, Service bulletin: SUSPENSION. Some customers may complain of signs of oil on the struts or shock absorbers. In most cases the oil that is present is normal, and a result of the oil that remains on the shaft during the normal sweeping process of the shaft seal. Follow the inspection guidelines below to determine if the condition is a result of the normal sweeping process or a failure of the shaft seal.
- [02\-004\-22a](/bulletins/10226814.md), 2022-12-02, Service bulletin: SUSPENSION. Some customers may complain of signs of oil on the struts or shock absorbers. In most cases the oil that is present is normal, and a result of the oil that remains on the shaft during the normal sweeping process of the shaft seal. Follow the inspection guidelines below to determine if the condition is a result of the normal sweeping process or a failure of the shaft seal.
- [02\-002\-22](/bulletins/10217210.md), 2022-08-04, Service bulletin: SUSPENSION. Some customers may complain about oil seepage or oil leakage from the rear shock absorbers. This concern may be due to a lack of sealing performance. To eliminate the oil seepage/leakage, the rear shock absorbers production process has been modified.
- [0300116](/bulletins/10213393.md), 2022-06-06, Service bulletin: SUSPENSION; STRUCTURE. Rattle/Chatter noise from rear differential
- [0200516](/bulletins/10213388.md), 2022-06-06, Service bulletin: SUSPENSION. Front/Rear stabilizer noise prevention
- [0200416](/bulletins/10213387.md), 2022-06-06, Service bulletin: EQUIPMENT; SUSPENSION:FRONT:SHOCK ABSORBER; SUSPENSION:REAR:SHOCK ABSORBER. SHOCK ABSORBER REPLACEMENT GUIDELINES
- [0200116](/bulletins/10213383.md), 2022-06-06, Service bulletin: EQUIPMENT; SUSPENSION. Popping and/or squeaking noise from front shock absorber and or creaking noise from front lower arm bushing
- [0200115](/bulletins/10213382.md), 2022-06-06, Service bulletin: EQUIPMENT; SUSPENSION. Creaking Noise From Front Lower Control Arm Bushings Some vehicles may exhibit a creaking noise from under the front of the vehicle when driving over bumps. The noise occurs at approx. 1225 mph \(2040 Km/h\) when the road surface is wet or after a car wash. The noise becomes more noticeable when driving over higher bumps.

JSON: [/v1/bulletins/10152375](/v1/bulletins/10152375)

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