Campaign 25V-663

Auxiliary engine electrical circuit, including the starter and voltage regulator, may become overloaded

Defect summary

Altec Industries, Inc. (Altec) is recalling certain 2022-2025 ST600 vehicles equipped with auxiliary engines. The auxiliary engine electrical circuit, including the starter and voltage regulator, may become overloaded.

Consequence

Overloaded circuits may overheat and increase the risk of fire.

Remedy

Owners will be advised to turn the battery disconnect off as part of the shutdown procedure. Altec will replace the electrical circuit, free of charge. Owner notification letters were mailed April 24, 2026. Owners may contact Altec customer service at 1-877-462-5832. Altec's number for this recall is CSN-3257.

Source: NHTSA ODI recalls file, campaign 25V663000. Text as published by NHTSA.

Vehicles covered

One product line is covered

Owner complaints filed with NHTSA about electrical system on these vehicles: 0, of which 0 involved a crash, fire, injury or death. Complaints are not verified by NHTSA.

Vehicles covered by campaign 25V-663
Make	Model	Model years	Complaints on this component
Altec	ST600	2022 to 2025	0

Source: NHTSA ODI recalls and complaints files. Equipment, tire and child-seat campaigns list products, not vehicles.

Investigation

No NHTSA investigation is linked to this recall

Most recalls are started by the manufacturer. This one lists "Manufacturer" as its origin.

Before the recall

No service bulletins on this component preceded the recall

Distinct manufacturer communications on the same component group, make, model and model year in the 24 months before the report date.

Source: NHTSA manufacturer communications file.

Service bulletins

26V-617 Sep 24, 2026
Improper wiring may prevent the boom stow auto-neutral feature from engaging, which can allow the truck to be driven while the boom is still elevated
26V-457 Jul 16, 2026
Boom stow switch wire in the cargo storage area may become damaged, which can result in a short circuit, causing the wire to overheat
26V-429 Jul 2, 2026
Inverter output AC wiring may be routed too tightly in the electrical receptacle enclosure and become damaged, possibly resulting in a short circuit
26V-071 Feb 6, 2026
Chassis engine may start unintentionally due to a missing diode in the Altec power distribution module
25V-890 Dec 18, 2025
Electronic taillight module harness may have inadequate circuit protection
25V-810 Nov 21, 2025
Lower emergency stop may not function when the upper control is selected