Defect: Prevost Car (US) Inc. (Prevost) is recalling certain 2018-2023 H3-45 motor coaches and H3-45 VIP motorhomes, and 2019 H3-41 motor coaches. The Automatic Fire Suppression System (AFSS) optical fire sensor positioned in the engine compartment's lower region may corrode and malfunction. In this event, the AFSS may give a false warning to the driver, command an unwarranted engine shutdown, and relea (excerpt)
Consequence: The activation of the Automatic Fire Suppression System can cause a sudden loss of drive power, increasing the risk of a crash. Additionally, a disabled coach may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury to passengers. (excerpt)
Remedy: Prevost will inspect the vehicles, install spacers between the optical fire sensor and bracket, and replace the optical fire sensor, if necessary, free of charge. Owner notification letters were mailed September 8, 2023. Owners may contact Prevost customer service at 1-866-870-2046. Prevost's number for this recall is SR23-05. (excerpt)
Do not drive: No. Park outside: No.
Investigations
1 investigations; 0 open.
PE21011
Opened: 2021-05-13. Closed: 2022-10-03.
Alternator Front Bearing Failure
NHTSA's Office of Defects Investigation (ODI) opened a Preliminary Evaluation after reviewing field reports concerning alternator front bearing failures that cause elevated temperatures within the engine compartment, resulting in the fire suppression system (FSS) activating, immediately shutting the engine down, and rendering the bus inoperable.Analysis of the data provided by Prevost Car (US) Inc
Date: 2026-02-03. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
The gasket thickness was increased from 1.5 mm to 3 mm to prevent interference between the collar ends, which previously made it impossible to reach the specified tightening torque. Increasing the gasket thickness ensures sufficient clearance between the collar ends and thus guarantees optimal tight
11003159
Date: 2024-06-04. Type: Service Bulletin/Repair Instructions. Systems: SUSPENSION.
Sway bar collars improvement. Revision A : Add front sway bar support replacement and change bolts lenght.
10248275
Date: 2023-12-14. Type: Service Bulletin/Repair Instructions. Systems: SUSPENSION.
SWAY BAR COLLARS IMPROVEMENT
10240148
Date: 2023-07-04. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.
H3 LAVATORY FAN RETROFIT KIT
10238418
Date: 2023-06-08. Type: Service Bulletin/Repair Instructions. Systems: STEERING.
KIT POWER STEERING TANK CONVERTION CUMMINS TO ZF WITH D13 ENGINE
10228667
Date: 2022-12-07. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES, AIR.
Air Tanks Draining Sequence. Revision: B - General Update
10226928
Date: 2022-11-17. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES, AIR.
Air Tanks Draining Sequence. Revision: A - Erroneous Secondary & Accessory tanks location.
10226931
Date: 2022-11-08. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING, POWER TRAIN.
P20EE (diagnostic troubleshooting code) SOLUTION - NOX CONVERSION EFFICIENCY. Revision J - Range of applicable VINs updated.
10226927
Date: 2022-11-02. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES, AIR.
Air Tanks Draining Sequence
10222381
Date: 2022-09-23. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING, POWER TRAIN.
P20EE (diagnostic troubleshooting code) SOLUTION - NOX CONVERSION EFFICIENCY. Revision J - Range of applicable VINs updated.
Notes on this record
Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.
NHTSA's complaints API and bulk file list no complaint for this make, model and model year in this data build.