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Warranty extension 26-01-063G TSB

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)
TypeWarranty extension
NHTSA id11036199
Published by NHTSA2026-08-15
Manufacturer's number26-01-063G TSB
Manufacturer's date2026-08-03
Campaign id or software versionL21G
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Certain GV70 (JK1) vehicles may experience an intermittent A/C inoperative condition when the engine is started after the air conditioner has been operated with the ignition switch in the ON position. During engine cranking, a temporary low-voltage condition may cause the blower motor protection logic to activate, resulting in the A/C system turning OFF and remaining inoperative until the vehicle is restarted. This bulletin provides the procedure to update the ATCU (Air Temperature Control Unit) software to revise blower motor protection logic and prevent this condition from occurring.

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
GENESIS GV702027

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

Other bulletins for the same vehicles and component
26-01-063G WebDCS2026-08-15. Warranty extension. Certain GV70 (JK1) vehicles may experience an intermittent A/C inoperative condition when the engine is started after the air conditioner has been operated with the ignition switch in the ON position. During engine cranking, a temporary low-voltage condition may cause the blower motor protection logic to activate, resulting in the A/C system turning OFF and remaining inoperative until the vehicle is restarted.