Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
167-T2608-3
Service Bulletin/Repair Instructions
Driveshaft Center Bearing Damage 2022 through 2026 model year Hino L-Series trucks If the truck experiences driveshaft center bearing damage or repeated damage, visually inspect the installed position of the center bearing, specifically the relationship between the dust cover and center bearing strap. If the installed position reassemblies the photograph below, open a TechAssist case describing the condition/concern and attach an image of the trucks driveline dust cover to center bearing alignment for further direction.
167-T2608-2
Service Bulletin/Repair Instructions
Driving Support Malfunction ABS Light On No Communication Driving Support Malfunction warning and/or ABS light on, communication concerns with the Wabco ABS moule, possibly related DTC’s too. We have found in some instances, a poor connection or backed out terminal found at the junction located behind the front bumper area. Follow the procedure to inspect the area of concern.
167-B2510-1
Service Bulletin/Repair Instructions
22-23 MY L-SERIES RADIATOR RETROFIT
167-T2505-1
Service Bulletin/Repair Instructions
The VSC relearn is required after Vehicle Stability Control repairs are completed
167-T2501-1
Service Bulletin/Repair Instructions
TT-24-013 22-25 MY RF BRAKE AIRLINE REROUTE
167-R2408-1
Service Campaign
We have determined that certain 2022 – 2024MY Hino S-Series vehicles equipped with 5.2L (4HK1) diesel engines and option (IE1) 4-wheel disc brakes were built with an Engine Control Module (ECM) and Diesel Exhaust Fluid Control Unit (DCU) containing an On Board Diagnostic (OBD) calibration error for Diagnostic Trouble Codes (DTC) P2201 NOx Sensor Circuit Performance Sensor 1 and P20EE Diesel Exhaust Fluid (DEF) System NOx Trap Low Efficiency.
167-B2408-1
Service Bulletin/Repair Instructions
• 2011 MY through 2021 MY vehicle may experience an exterior mirror stay that is loose or drifts slightly from its position. In these rare conditions an enhanced mirror stay, mirror stay mount, related fasteners and revised torque specifications have been released to correct this condition. This procedure provides directions for installation of the enhanced components. • 2022 MY vehicle may experience cracking of the door structure around the lower mirror base on the driver side or passenger side. In these rare conditions, the effected door needs to be replaced. In addition, an enhanced mirror stay, mirror stay mount, related fasteners and revised torque specifications have been released to correct this condition. This procedure provides directions for installation of the enhanced components.
167-T2408-1
Service Bulletin/Repair Instructions
2022 to 2025 MY L-series are equipped with an engine start detection frequency monitor. Once the monitor has detected a predetermined amount of starts the meter will display “Change starter & starter relay”. The monitor must be reset any time the starter is replaced .
167-T2407-5
Service Bulletin/Repair Instructions
2022-2025 MY L SERIES LOW DEF FAULT CODES 3497, 3498 TECH TIP NO: 24-011
167-T2406-1
Service Bulletin/Repair Instructions
After connecting to a truck using DX3, it may be necessary to review or create a DX Diagnostic Report for review.
167-T2406-2
Service Bulletin/Repair Instructions
This article will provide dealership technicians with information on how to open a tech assist case and discuss what is required when opening a Tech Assist Case.
167-B2403-1
Service Bulletin/Repair Instructions
22-23 MY L-SERIES COOLANT DEGAS BOTTLE SUPERSESSION
167-T2402-1
Service Bulletin/Repair Instructions
This TechTip was assembled with the most common service procedures to help technicians determine which diagnostic tool to use when performing general ABS/EBS diagnosis, Lane Departure Warning (LDW) diagnosis, Steering Zero Point Learning and ABS/EBS Module Programming.
167-B2306-2
Service Bulletin/Repair Instructions
ALLISON 3000 SERIES TRANSMISSION PLUG INSPECTION
167-B2306-1
Service Bulletin/Repair Instructions
Some trucks built prior to May 9, 2022 may experience reduced or intermittent cooling performance from the air conditioning system. If a subject vehicle exhibits this condition, itâs likely that the refrigerant was overcharged during vehicle assembly. This procedure provides instructions for proper recovery and recharge of the refrigerant system and appropriate warranty claim application information.
167-T2305-1
Service Bulletin/Repair Instructions
After a re-calibration of a Cummins Engine ECU, DTC 2222 Fuel Level (Main Tank) Sensor Circuit - Voltage Above Normal or Shorted to High Source may set in the engine ECU. This is likely the result of a re-calibration event where the Save / Restore Adjustable Parameters selection was not checked during the re-calibration using Cummins INSITE.
167-B2212-3
Service Bulletin/Repair Instructions
L-SERIES RADIATOR HOSE CLAMP-COOLANT LEAK. The subject vehicles may exhibit coolant leaking from either the inlet or outlet radiator hose connections of the radiator or auxiliary transmission cooler. This leak may be due to reduced clamp retention at these 4 locations. If a coolant leak is identified coming from any of the 4 locations, this procedure provides installation instructions and directions to install the new style hose clamp at all 4 locations.
167-T2209-1
Service Bulletin/Repair Instructions
TT-22-017 L-SERIES DIAGNOSTIC TROUBLE CODE (DTC) 0559 TECH TIP
167-T2205-1
Service Bulletin/Repair Instructions
2022MY-2023MY L SERIES TRUCKS A/C PERFORMANCE ISSUE TT-22-012
167-B2205-1
Service Bulletin/Repair Instructions
2022MY-2023MY L SERIES TRUCKS COOLANT LEVEL SENSOR FAILURE. SB-22-013
167-T2203-3
Service Bulletin/Repair Instructions
ENGINE RELATED HINO COMPONENTS FOR THE 2022-2023 MODEL YEAR L SERIES TRUCKS EQUIPPED WITH A CUMMINS ENGINE TT-22-006
167-T2203-2
Service Bulletin/Repair Instructions
DIESEL FUEL IN THE DIESEL EXHAUST FLUID (DEF) TANK TECH TIP TT-22-005