# Service bulletin TechTalk7596

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: 10186541
- Published by NHTSA: 2021\-02\-02
- Manufacturer's number: TechTalk7596
- Manufacturer's date: 2021\-01\-06
- NHTSA component: FORWARD COLLISION AVOIDANCE; LANE DEPARTURE

## NHTSA's summary

Tech Talk discussion on P4 radar issue.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186541-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186541-9999.pdf)

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

## Components

Driver assistance

## Vehicles listed

- 2021 FREIGHTLINER CASCADIA

## Recalls for the same vehicles and component

- [26V583000](/recalls/nhtsa/26V583000.md), 2026-09-09: ELECTRONIC STABILITY CONTROL \(ESC\); SERVICE BRAKES, AIR:ANTILOCK
- [23V299000](/recalls/nhtsa/23V299000.md), 2023-04-26: ELECTRONIC STABILITY CONTROL \(ESC\)
- [23V073000](/recalls/nhtsa/23V073000.md), 2023-02-10: ELECTRONIC STABILITY CONTROL \(ESC\); SERVICE BRAKES, AIR:ANTILOCK:MODULATOR
- [22V817000](/recalls/nhtsa/22V817000.md), 2022-11-01: SERVICE BRAKES, AIR:ANTILOCK:MODULATOR; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

## Other bulletins for the same vehicles and component

- [TEM\-11\-00001](/bulletins/11035536.md), 2026-08-03, Other: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; FORWARD COLLISION AVOIDANCE: WARNINGS. Truck Equipment Manufacturer upfit guide for Detroit Assurance Forward Radar Relocation and Adjustment
- [CXA 04\_26\_Side Guard](/bulletins/11031981.md), 2026-05-02, Other: LANE DEPARTURE: BLIND SPOT DETECTION. CX Advocate for P4 Side Guard Assist On/Off Menus and Trailer Functionality \(TSB\-54\-381\-FTL\)
- [FAB344](/bulletins/11024978.md), 2025-11-05, Other: FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING. Features and Benefits for SafetyDirect 5.1
- [TSB54\-366\-FTL](/bulletins/11012310.md), 2025-01-03, Service bulletin: POWER TRAIN; LANE DEPARTURE: BLIND SPOT DETECTION; ENGINE. Technical Service Bulletin for J1939 Communication Errors with Cummins Engine Automated or Allison Transmission and Bendix Side Radar
- [SS3142\-FTL](/bulletins/11011107.md), 2024-12-04, Other: LANE DEPARTURE: BLIND SPOT DETECTION; ENGINE; VISIBILITY/WIPER. Service Solution for J1939 CAN issues for vehicles equipped w/ Bendix Side Radar w/ expanded field of view
- [CXA 11\_21\_P4 J1939 Commun](/bulletins/11011098.md), 2024-12-04, Other: LANE DEPARTURE: BLIND SPOT DETECTION; ENGINE; POWER TRAIN. CX Advocate for P4 J1939 Communication Errors \(TSB54\-366\-FTL\)
- [TSB54\-366\-FTL](/bulletins/11010169.md), 2024-11-07, Service bulletin: ENGINE; POWER TRAIN; LANE DEPARTURE: BLIND SPOT DETECTION. Technical Service Bulletin for J1939 Communication Errors with Cummins Engine Automated or Allison Transmission and Bendix Side Radar
- [SS3112\-FTL2022](/bulletins/10225499.md), 2022-11-02, Service bulletin: LANE DEPARTURE. Service Solution for Detroit Side Object Detection Harness Rub\-Chafe on Bracket
- [SF630](/bulletins/10219276.md), 2022-09-07, Service bulletin: LANE DEPARTURE. Revised Field Service Campaign for Cascadia Lane Assist Software.
- [SS1034428\-FTL22](/bulletins/10210557.md), 2022-05-03, Service bulletin: FORWARD COLLISION AVOIDANCE. Service Solution for Cummins Engine andWABCO OnGuard \(Obtaining Cruise When AdaptiveCruise Is Interrupted\). Interruption of the forward radar system results in loss of both standard and adaptive cruise functions. The OnGuard system will recover \(self\-heal\), once the issue goes away, but the drivercannot get Adaptive Cruise Control functional until the ignition switch is cycled. Applies to all New Cascadia vehicles built with Cummins engines and WABCO OnGuard.

JSON: [/v1/bulletins/10186541](/v1/bulletins/10186541)

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