Technical Service Bulletin 23109 — 2022 IC BUS EVSB
VISIBILITY
Bulletin Details
| TSB ID | 23109 |
| Manufacturer | |
| Vehicle | 2022 IC BUS EVSB |
| Component | VISIBILITY |
| Communication Date |
Bulletin Summary
Certain EV school bus high-voltage cabin heaters may cause excessive cycling of the HVDU (High-Voltage Distribution Unit), which can result in premature HVDU contactor failure.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.