# Service bulletin TSN 18484

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: 10193210
- Published by NHTSA: 2021\-05\-13
- Manufacturer's number: TSN 18484
- Manufacturer's date: 2016\-01\-28
- NHTSA component: STEERING; EQUIPMENT

## NHTSA's summary

Technical Service Note on Intermittent loss of power steering assist, LH turn only for Cascadia. Only intended for customers wishing to add a power steering oil cooler. For replacement of the gear reference TSN 46\-01

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10193210-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10193210-9999.pdf)

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

## Components

Equipment and accessories, Steering

## Vehicles listed

- 2015 FREIGHTLINER CASCADIA

## Recalls for the same vehicles and component

- [19V093000](/recalls/nhtsa/19V093000.md), 2019-02-12: STEERING:LINKAGES:TIE ROD ASSEMBLY
- [18V503000](/recalls/nhtsa/18V503000.md), 2018-07-31: STEERING:LINKAGES:TIE ROD ASSEMBLY
- [17V810000](/recalls/nhtsa/17V810000.md), 2017-12-15: EQUIPMENT
- [16V143000](/recalls/nhtsa/16V143000.md), 2016-03-09: EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT:ELECTRICAL
- [14V588000](/recalls/nhtsa/14V588000.md), 2014-09-23: EQUIPMENT:ELECTRICAL
- [14V367000](/recalls/nhtsa/14V367000.md), 2014-06-25: SUSPENSION:FRONT; STEERING

## Other bulletins for the same vehicles and component

- [FleetCom\_Pwr Steer Res](/bulletins/11027503.md), 2026-01-08, Other: STEERING. Fleet Communications for Power Steering Resevoir \- NTF Replacements
- [SS3163\-FTL](/bulletins/11013216.md), 2025-01-29, Other: STEERING. Service Solution for Power Steering Reservoir Fill Cap Venting
- [TSN 32\-09](/bulletins/10193232.md), 2021-05-13, Service bulletin: SUSPENSION; EQUIPMENT. TSN for all Cascadia vehicles equipped with an Airliner rear suspension and the HD 6\-piece bolted style forward suspension crossmember \- Cascadia vehicles equipped with an Airliner rear suspension and the HD 6\-piece bolted style forward suspension crossmember.
- [TSN 31\-11](/bulletins/10193166.md), 2021-05-13, Service bulletin: EQUIPMENT; POWER TRAIN. TSN for all Cascadia vehicles equipped with a driveline center bearing midship support. Reference the following illustration \- Customer complaints of loose fasteners at the bracket to channel bolted connection.
- [FTLCAE139\-2013](/bulletins/10193108.md), 2021-05-12, Service bulletin: EQUIPMENT; FUEL SYSTEM, GASOLINE; SEAT BELTS; POWER TRAIN. INTERIOR STORAGE \- Side Storage Bins Removed from Certain Cascadia Sleepers. SEAT BELTS \- Height Adjustment Removed from Cascadia Passenger Side Seat Belt. FUEL TANKS \- Fuel Tank Changes for 25" and 23" Tanks for Model Year 2015. TRANSMISSION \- Correction to Allison 5th Gen Module 84L Definition Example. ADMINISTRATION \- Model Year 2015 Changeover Date Established. APPENDIX A \- 25" and 23" Diameter Cylindrical Fuel Tank Changes. APPENDIX B \- Revised Allison 5th Gen New Modules and Definitions
- [WI21\-008](/bulletins/10190549.md), 2021-04-23, Service bulletin: EQUIPMENT. Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times \(SRTs\) shown. The updated times will be applied to repair orders opened on or after April 5, 2021.
- [DT12 Trans Chafe](/bulletins/10190020.md), 2021-04-08, Service bulletin: EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN. DTNA received a field notification on multiple units regarding diagnostic fault codes that were found to be causing issues to the After Treatment Control Module \(ACM\). These fault codes indicated that the ACM communication message was not received by the Motor Control Module \(MCM\) which in certain cases, led to a 25% engine de\-rate situation. Further diagnosis revealed that the DT12 wiring harness was chafing and contacting the transmission TCU case. To reduce potential chafing areas, the proposed short\-term containment was to route the wiring harness using additional tie straps. This communication applies to Freightliner and Western Star vehicles built with DT12 transmissions.
- [SB83\-155](/bulletins/10189340.md), 2021-03-26, Service bulletin: EQUIPMENT. Updated Freightliner Service Bulletin for Espar Service Information. This bulletin replaces the version dated January 1, 2015. New Cascadia has been added to the model list.
- [WP21\-007](/bulletins/10189319.md), 2021-03-24, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. Warranty Policy Letter for battery tags. DTNA determined that since adopting the AutoMeter BCT\-460DTNA Powernet Assessment Tool \(AutoMeter\) as the required powernet system tester, not all battery tags have to be retained support Warranty\-related claims.
- [SB54\-308](/bulletins/10187532.md), 2021-02-26, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; EQUIPMENT. Freightliner Service Bulletin for Programming Chassis Electronic Control Units \(ECUs\) With DiagnosticLink.

JSON: [/v1/bulletins/10193210](/v1/bulletins/10193210)

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