# Service bulletin 0501\-18

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: 10146322
- Published by NHTSA: 2018\-10\-29
- Manufacturer's number: 0501\-18
- Manufacturer's date: 2018\-05\-01
- NHTSA component: ENGINE; EQUIPMENT; ELECTRICAL SYSTEM

## NHTSA's summary

0501\-18 Aftertreatment Control Module \(ACM\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10146322-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10146322-0001.pdf)

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

## Components

Electrical system, Engine, Equipment and accessories

## Vehicles listed

- 2017 to 2019 FREIGHTLINER 114SD
- 2017 to 2019 FREIGHTLINER 122SD
- 2017 to 2019 FREIGHTLINER BUSINESS CLASS M2
- 2017 to 2019 FREIGHTLINER CASCADIA
- 2017 to 2019 WESTERN STAR 4700
- 2017 to 2019 WESTERN STAR 4900
- 2017 to 2019 WESTERN STAR 5700
- 2017 to 2019 WESTERN STAR 6900

## Recalls for the same vehicles and component

- [2026091](/recalls/tc/2026091.md), 2026-03-03: Electrical
- [2021697](/recalls/tc/2021697.md), 2021-11-12: Electrical
- [21V882000](/recalls/nhtsa/21V882000.md), 2021-11-12: ELECTRICAL SYSTEM:WIRING
- [2021399](/recalls/tc/2021399.md), 2021-06-25: Electrical
- [21V481000](/recalls/nhtsa/21V481000.md), 2021-06-25: ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
- [2021172](/recalls/tc/2021172.md), 2021-03-24: Electrical
- [21V206000](/recalls/nhtsa/21V206000.md), 2021-03-24: ELECTRICAL SYSTEM:WIRING
- [2020408](/recalls/tc/2020408.md), 2020-09-01: Engine
- [20V527000](/recalls/nhtsa/20V527000.md), 2020-09-01: ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING
- [20V525000](/recalls/nhtsa/20V525000.md), 2020-08-31: ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES; STRUCTURE

## Other bulletins for the same vehicles and component

- [SS 3124\-FTL](/bulletins/11031974.md), 2026-05-02, Other: ELECTRICAL SYSTEM. Service Solution for Legacy M2 Bulkhead Module \(BHM\) Replacement and DiagnosticLink Issues
- [FleetCom\_AMP Draw](/bulletins/11026454.md), 2025-12-06, Other: ELECTRICAL SYSTEM. Fleet Communications for Key off amp draw
- [FleetCom\_SS 3163\-FTL](/bulletins/11026453.md), 2025-12-06, Other: ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting
- [SS3124\-FTL](/bulletins/11019799.md), 2025-06-27, Other: ELECTRICAL SYSTEM. Service Solution for Legacy M2 Bulkhead Module \(BHM\) Replacement and Diagnosticlink Issue
- [CXA 3\_25\_NOx](/bulletins/11016309.md), 2025-04-02, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 2\_25\_Turbo Oil Drain](/bulletins/11014819.md), 2025-03-04, Other: ENGINE. CX Advocate for turbo oil drain cracking
- [CXA 2\_25\_NOx](/bulletins/11014818.md), 2025-03-04, Other: ENGINE. CX Advocate for NOx conversion low faults
- [MYCOM\_02102025\-1](/bulletins/11014786.md), 2025-03-04, Other: ENGINE. My Communications for Variable Speed Coolant Pump for DD13 Engines \- Cascadia/57X Only
- [SS3161\-FTL](/bulletins/11013215.md), 2025-01-29, Other: ELECTRICAL SYSTEM. Service Solution for Cascadia intermittent no\-start and CPC not configured message
- [CXA 1\_16\_Turbo Oil Drain](/bulletins/11013206.md), 2025-01-29, Other: ENGINE. CX Advocate for turbo oil drain cracking

JSON: [/v1/bulletins/10146322](/v1/bulletins/10146322)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%200501-18&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10146322&vehicle=Service%20bulletin%200501-18)