# Service bulletin ICI21\-027

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: 10200610
- Published by NHTSA: 2021\-08\-28
- Manufacturer's number: ICI21\-027
- Manufacturer's date: 2021\-08\-24
- NHTSA component: SERVICE BRAKES, HYDRAULIC

## NHTSA's summary

Important Campaign Information Letter for SF622 – Campaign Revision/Reactivation. This letter is to inform you that the work instructions for Field Service Campaign SF622, Cascadia/49X ABS MBSP\+ Controller Software Update have been revised.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200610-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200610-9999.pdf)

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

## Components

Brakes

## Vehicles listed

- 2019 to 2022 FREIGHTLINER CASCADIA
- 2021 to 2022 WESTERN STAR 49X

## Recalls for the same vehicles and component

- [2026428](/recalls/tc/2026428.md), 2026-09-09: Brakes
- [26V583000](/recalls/nhtsa/26V583000.md), 2026-09-09: ELECTRONIC STABILITY CONTROL \(ESC\); SERVICE BRAKES, AIR:ANTILOCK
- [2023051](/recalls/tc/2023051.md), 2023-02-10: Brakes
- [23V073000](/recalls/nhtsa/23V073000.md), 2023-02-10: ELECTRONIC STABILITY CONTROL \(ESC\); SERVICE BRAKES, AIR:ANTILOCK:MODULATOR
- [2022626](/recalls/tc/2022626.md), 2022-11-01: Brakes
- [22V817000](/recalls/nhtsa/22V817000.md), 2022-11-01: SERVICE BRAKES, AIR:ANTILOCK:MODULATOR; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
- [22V468000](/recalls/nhtsa/22V468000.md), 2022-06-30: PARKING BRAKE
- [22V456000](/recalls/nhtsa/22V456000.md), 2022-06-24: SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT; SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
- [22V443000](/recalls/nhtsa/22V443000.md), 2022-06-22: SERVICE BRAKES
- [22V374000](/recalls/nhtsa/22V374000.md), 2022-05-25: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE

## Other bulletins for the same vehicles and component

- [CXA 03\_26\_ABS LA Fault](/bulletins/11030500.md), 2026-04-02, Other: SERVICE BRAKES. CX Advocate for 1810/02 ABS longitudinal acceleration fault \(TSB\-54\-104\-WST,TSB\-54\-379\-FTL\)
- [FleetCom\_ESC Warning Lamp](/bulletins/11029519.md), 2026-03-04, Other: SERVICE BRAKES. Fleet Communications for TSB\-54\-379\-FTL \& TSB\-54\-104\-WST ESC warning lamp and ECU replacement
- [MyCom\_02102026\-1](/bulletins/11029513.md), 2026-03-04, Other: SERVICE BRAKES. My Communications for Alliance EX Value Brake Drum
- [TSB\-54\-379\-FTL](/bulletins/11028071.md), 2026-02-03, Service bulletin: SERVICE BRAKES. Revised Technical Service Bulletin for ESC Warning Lamp and ECU Replacement
- [TSB\-54\-379\-FTL](/bulletins/11028064.md), 2026-02-03, Service bulletin: SERVICE BRAKES. Technical Service Bulletin for ESC Warning Lamp and ECU Replacement
- [FleetCom\_ABS Wheel Spd](/bulletins/11027487.md), 2026-01-08, Other: SERVICE BRAKES. Fleet Communications for ABS Wheel Speed Sensor Faults
- [CXA 10\_25\_Air Dryer Purge](/bulletins/11025094.md), 2025-11-06, Other: SERVICE BRAKES. CX Advocate for Experiencing Excessive Purging from Air Dryer
- [MYCOM\_09122025\-1](/bulletins/11023665.md), 2025-10-03, Other: SERVICE BRAKES. My Communications for Parts Alert ABS Harness
- [CALFTL42\-006](/bulletins/10226979.md), 2022-12-03, Service bulletin: SERVICE BRAKES, HYDRAULIC. Customer Advisory Letter for Inspection of Air Disc Brake Caliper Mounting Fasteners.
- [CALFTL42\-007](/bulletins/10225490.md), 2022-11-02, Service bulletin: SERVICE BRAKES, AIR. Customer Advisory Letter for Brake System Modulator Valve Evaluation.

JSON: [/v1/bulletins/10200610](/v1/bulletins/10200610)

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