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Service bulletin TSB26-410-001

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11029646
Published by NHTSA2026-03-05
Manufacturer's numberTSB26-410-001
Manufacturer's date2026-02-12
Campaign id or software version26005
NHTSA componentELECTRICAL SYSTEM
Manufacturer's systemZeroRPM: Battery

NHTSA's summary

This service bulletin is about certain vehicles equipped with ZeroRPM that may possess default settings that do not prioritize the charging of the chassis equipped lead acid batteries.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
SPARTAN FIRE GLADIATOR2022, 2023, 2024, 2025
SPARTAN FIRE METROSTAR2022, 2023, 2024, 2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
24V1810002024-03-07. ELECTRICAL SYSTEM
22V3730002022-05-24. EQUIPMENT:EMERGENCY:SIREN/LIGHTING/STROBES:WIRING; ELECTRICAL SYSTEM

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TSB26-560-0012026-05-07. Service bulletin. This service bulletin is about certain vehicles equipped with a CAN I/O module that may experience excessive resistance value between pin 3 and 4 and how to replace the module.
TSB26-520-0012026-04-02. Service bulletin. This service bulletin is about certain vehicles equipped with a LCP80 Kussmaul charger that may fail to initiate the charging operation and instructions on how to inspect and potentially replace the charger.
CSB25-500-0012026-01-08. Service bulletin. This service bulletin is about certain vehicles equipped with a Weldon Hercules HC 1.8 node giving timing errors when combined with the Whelen Core and Core R and instructions on how to update the OS version on the node.
TSB25-810-0012025-04-04. Service bulletin. This service bulletin provides instructions on how to properly install the AB10 IMMI slave module after shipped short due to a supplier shortage.
TSB24-500-0012024-07-03. Service bulletin. This service bulletin is about certain vehicles equipped with a Weldon HC node that may prevent certain functions from working properly and the instructions on how to update the node operating system.
TSB23-880-0012023-07-17. Service bulletin. This service bulletin provides instructions on how to properly install the RCM after shipped short due to a supplier shortage.
TSB23-520-001A2023-07-17. Service bulletin. This service bulletin provides instructions to inspect and rewire 120V box in accordance with diagram. Revision to the previous bulletin released.
TSB23-520-0012023-05-01. Service bulletin. This service bulletin provides instructions to inspect and rewire 120V box in accordance with diagram.