# Service bulletin TechTalk8166

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: 10188001
- Published by NHTSA: 2021\-03\-03
- Manufacturer's number: TechTalk8166
- Manufacturer's date: 2021\-02\-17
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

Tech Talk discussion on P4 Cascadia ABS code SPN 520213 FMI 31.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188001-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188001-9999.pdf)

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

## Components

Brakes

## Vehicles listed

- 2020 FREIGHTLINER CASCADIA

## 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
- [2020444](/recalls/tc/2020444.md), 2020-09-18: Brakes
- [2020305](/recalls/tc/2020305.md), 2020-07-02: Brakes
- [20V390000](/recalls/nhtsa/20V390000.md), 2020-07-02: SERVICE BRAKES, AIR:SUPPLY:QUICK RELEASE VALVE
- [2020086](/recalls/tc/2020086.md), 2020-03-03: Brakes

## Other bulletins for the same vehicles and component

- [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\-007](/bulletins/10225490.md), 2022-11-02, Service bulletin: SERVICE BRAKES, AIR. Customer Advisory Letter for Brake System Modulator Valve Evaluation.
- [SF622REV](/bulletins/10208395.md), 2022-03-03, Service bulletin: SERVICE BRAKES, HYDRAULIC. Revised Field Service Campaign for Cascadia, 49X ABS MBSP\+ Controller Software Update
- [ICI22\-015](/bulletins/10208394.md), 2022-03-03, Service bulletin: SERVICE BRAKES, HYDRAULIC. Important Campaign Information letter for SF622 – Addition of 8x4 Vehicles to Populationx
- [SF622](/bulletins/10200611.md), 2021-08-28, Service bulletin: SERVICE BRAKES, HYDRAULIC. Revised Field Service Campaign for Cascadia/49X ABS MBSP\+ Controller Software Update. REVISION: The work instructions have been revised. Certain vehicles have a WABCO Anti\-Lock Braking System \(ABS\) controller that logs excessive 629\-11 fault codes which subsequently lead to additional downstream fault codes.
- [ICI21\-027](/bulletins/10200610.md), 2021-08-28, Service bulletin: SERVICE BRAKES, HYDRAULIC. 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.
- [SF622](/bulletins/10198596.md), 2021-06-29, Service bulletin: SERVICE BRAKES, HYDRAULIC. Field Service Campaign for Cascadia/49X ABS MBSP\+ Controller Software Update. Certain vehicles have a WABCO Anti\-Lock Braking System \(ABS\) controller that logs excessive 629\-11 fault codes which subsequently lead to additional downstream fault codes.
- [TechTalk566771](/bulletins/10194869.md), 2021-06-03, Service bulletin: SERVICE BRAKES, AIR; ELECTRICAL SYSTEM; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\). Tech Talk Discussion P4 New Cascadia ABS Fault Code 520247/31 \- Failure Memory Bit \(ESC\) Condition Exists
- [CALFTL42\-004](/bulletins/10194477.md), 2021-05-26, Service bulletin: EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; SERVICE BRAKES, HYDRAULIC. Customer Advisory Letter for Drive Axle Drum Brake S\-Cam U\-Bolt Replacement.

JSON: [/v1/bulletins/10188001](/v1/bulletins/10188001)

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