2019 IC BUS CESB

SERVICE BRAKES, HYDRAULIC:FLUID

International Motors, LLC (International) is recalling certain 2016-2024 IC Bus CESB school buses. The brake pressure switch assembly may leak brake fluid into the brake pressure switch's electrical components and cause an electrical short-circuit.

Risk: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.

SERVICE BRAKES, HYDRAULIC:FLUID

Navistar, Inc. (Navistar) is recalling certain 2016 and 2018-2024 IC Bus CE school buses. The brake pressure switch assembly may leak brake fluid into the brake pressure switch's electrical components and cause an electrical short-circuit.

Risk: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.

STRUCTURE:EMERGENCY:ESCAPE/EGRESS/EXIT

Navistar, Inc. (Navistar) is recalling certain 2014 IC Bus CE, 2019 IC Bus CE, and 2022 IC Bus CE school buses. These buses are not equipped with enough emergency exits. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 217, "Bus Emergency Exits and Window Retention and Release."

Risk: A lack of emergency exits can delay passengers from exiting the vehicle during an emergency, increasing their risk of injury.

FUEL SYSTEM, DIESEL: PRE-HEATER

Navistar, Inc. (Navistar) is recalling certain 2017-2021 IC CE School Buses equipped with Cummins B6.7 diesel engines with fuel module option number FS90301 or FS90453. The electric fuel heater within the fuel module may overheat and cause plastic in the fuel heater to melt and potentially catch fire. It may also lead to engine stalling.

Risk: A fire increases the risk of injury. An engine stall can increase the risk of a crash.

FUEL SYSTEM, DIESEL: PRE-HEATER

Navistar, Inc. (Navistar) is recalling certain 2017-2020 IC Bus CESB school buses equipped with Cummins B6.7 diesel engines with fuel module option number FS90301 or FS90453. The electrical wiring within the fuel heater may overheat and may cause plastic in the fuel heater to melt and potentially catch fire. It may also lead to engine stalling.

Risk: A fire increases the risk of injury. An engine stall can increase the risk of crash.

FUEL SYSTEM, DIESEL: PRE-HEATER

Navistar, Inc. (Navistar) is recalling certain 2017-2020 International DuraStar and WorkStar, 2018-2020 IC Bus CECB, International HV and MV, 2018-2019 IC Bus 1300 FBC and HCCB, and 2019-2020 IC Bus TCCB vehicles equipped with Cummins B6.7 diesel engines with fuel module option number FS90301 or FS90453. The electric fuel heater within the fuel module may overheat and cause plastic in the fuel heater to melt and potentially catch fire. It may also lead to engine stalling.

Risk: A fire increases the risk of injury. An engine stall can increase the risk of crash.

SERVICE BRAKES, AIR:DISC:CALIPER

Navistar, Inc. (Navistar) is recalling certain 2016-2020 IC CE and 2019 IC RE school buses equipped with Bendix ADB 22X brake calipers. The driver side rear brakes may drag.

Risk: A dragging brake may cause damage to the brake components, which may activate the ABS warning light. The warning light may cause the driver to immediately stop the vehicle and transfer occupants. Additionally, the high temperatures at the wheel end can increase the risk of a fire. Either condition increases the risk of injury.

FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP

Navistar, Inc. (Navistar) is recalling certain 2016-2019 IC bus CE school buses equipped with 8.8L liquid propane gas (LPG) engines. The LPDM relay for the propane booster pump and the scavenge pump may intermittently fail, causing the fuel pump to stop.

Risk: If the fuel pump stops, the bus will stall, increasing the risk of a crash.

SERVICE BRAKES, AIR

Navistar, Inc. (Navistar) is recalling certain 2019-2020 IC Bus CE school buses equipped with feature code 04AZS (4-channel Antilock Brakes, 4-channel Electronic Stability and Automatic Traction Control. The brake air line tube to the left brake modulator valve may have been improperly routed, possibly resulting in the line kinking, causing the vehicle to vehicle to pull to the right when braking or preventing the anti-lock brakes from functioning properly.

Risk: A vehicle pulling to the right during braking or improper ABS function can increase the risk of a crash.

SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING: LAMP

Navistar, Inc. (Navistar) is recalling certain 2019-2020 IC Bus CE school buses equipped with hydraulic brakes. The brake pressure switch on these buses may become stuck possibly resulting in a false fault code and brake warning light on the instrument cluster.

Risk: A false code or a brake warning light may lead a driver to immediately pull over to transfer passengers to another bus, which can increase the risk of injury. Additionally, if the driver is aware that the warning is false, they may continue to use the bus, and in the event of an actual brake system problem, the driver will not be warned, increasing the risk of a crash.

SERVICE BRAKES, AIR

Navistar, Inc. (Navistar) is recalling certain 2019 IC Bus CE and RE school buses equipped with long stroke brake chambers and spring actuated parking brakes. The spring actuated parking brake may be improperly crimped to the long stroke service brake chamber, causing a service brake air leak and the possible separation of the spring brake chamber from the service brake section.

Risk: If there is an air leak or separation of the spring brake chamber, it can lengthen the distance needed to stop the vehicle, increasing the risk of a crash.

STRUCTURE:EMERGENCY:ESCAPE/EGRESS/EXIT

Navistar, Inc. (Navistar) is recalling certain 2018-2019 IC Bus CE and 2019 IC Bus RE school buses. The release mechanism on the emergency windows may be difficult to open in an emergency situation. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 217, "Bus Emergency Exits and Window Retention and Release."

Risk: If extra force is needed to pull the release handle, exit of the vehicle may be hindered, increasing the risk of injury in the event of an emergency.

EQUIPMENT ADAPTIVE/MOBILITY

Navistar, Inc. (Navistar) is recalling certain 2015-2019 IC Bus CE school buses, equipped with certain S-Series and K-Series Titanium Wheelchair Lifts, models K200, K201, K550, K551, S200, S2201, S550 and S551. The wheelchair lift positioning input cam may fail while the lift is in use, allowing the platform to travel higher than the vehicle's floor height.

Risk: If the wheelchair lift platform stops above the vehicle floor, the wheelchair user can tip inwards toward the vehicle when exiting the lift, increasing their risk of injury.

SERVICE BRAKES, AIR

Navistar, Inc. (Navistar) is recalling certain 2019 IC Bus CE school buses equipped with feature code 04091 (dual air brake system) and 04AZS (Antilock Brake System (ABS) with 4 channel Electronic Stability Protection (ESP)). The air supply line to the SR7 roll stability valve may have been improperly routed to the ATR6 brake control valve steer axle delivery port, when it should be connected to the ATR6 brake control valve control port.

Risk: During a stability control oversteer event when there are slippery road conditions, the parking brakes may be modulated unintentionally, potentially causing a loss of control and increasing the risk of a crash.