# Service bulletin TechTalk7878

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: 10183403
- Published by NHTSA: 2020\-12\-04
- Manufacturer's number: TechTalk7878
- Manufacturer's date: 2020\-11\-30
- NHTSA component: ENGINE AND ENGINE COOLING; EQUIPMENT; SERVICE BRAKES

## NHTSA's summary

Tech Talk discussion on service brakes lock up when using engine brakes.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10183403-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10183403-9999.pdf)

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

## Components

Brakes, Engine, Equipment and accessories

## Vehicles listed

- 2014 FREIGHTLINER CASCADIA
- 2018 FREIGHTLINER CASCADIA

## Recalls for the same vehicles and component

- [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
- [19V711000](/recalls/nhtsa/19V711000.md), 2019-10-07: SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
- [19V370000](/recalls/nhtsa/19V370000.md), 2019-05-14: SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK
- [19V136000](/recalls/nhtsa/19V136000.md), 2019-02-27: SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT

## Other bulletins for the same vehicles and component

- [FleetCom\_SS 3163\-FTL](/bulletins/11026453.md), 2025-12-06, Other: ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting
- [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
- [CXA 1\_16\_Turbo Oil Drain](/bulletins/11013206.md), 2025-01-29, Other: ENGINE. CX Advocate for turbo oil drain cracking
- [CXA 1\_16\_NOx](/bulletins/11013204.md), 2025-01-29, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 1\_16\_GATS2.4](/bulletins/11013201.md), 2025-01-29, Other: ENGINE. CX Advocate for GATS2.4 being expanding to DD15
- [CXA 1\_16\_DD13 Altitude](/bulletins/11013199.md), 2025-01-29, Other: ENGINE. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
- [CXA 1\_16\_CARB Truck Chec](/bulletins/11013196.md), 2025-01-29, Other: ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On\-Board Diagnostic \(OBD\) test submissions for the Clean Truck Check.

JSON: [/v1/bulletins/10183403](/v1/bulletins/10183403)

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