Service bulletin SC373_TSB

Manufacturer communication, from NHTSA Manufacturer Communications

Published by NHTSA: Sep 2, 2026
Manufacturer: KIA
NHTSA ID: 11036626
NHTSA category: Service Bulletin/Repair Instructions
Applies to, as stated by NHTSA: KIA EV6 2024-2026
Component, as stated by NHTSA: ENGINE; VISIBILITY/WIPER

Text of the manufacturer communication

TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: 3-WAY COOLANT VALVE REPLACEMENT (SC373) - This bulletin provides information to replace the 3-way coolant valve. In addition, inspect the 3-way coolant valve harness connector for corrosion, and if necessary, replace the harness connector on certain 2024-2026MY EV6 (CV, CVa) vehicles produced from August 07, 2023 through June 18, 2026. The 3-way coolant valve in the subject vehicles may become damaged and result in a coolant leak. As a result, corrosion may also be present in the 3-way coolant valve harness connector. An inoperative 3-way coolant valve or corrosion within the harness connector may result in reduced Heating, Ventilation, and Air Conditioning (HVAC) performance and/or in the illumination of the “Check electric vehicle system” or “Refill Coolant” warning messages in the instrument cluster.

Manufacturer document number: SC373_TSB
Date of the communication: 2026-08-21
Manufacturer campaign or software version: SC373

View original source on NHTSA.gov

NHTSA reuses some ID numbers across record types. If its page lists more than one record, this one is the manufacturer communication dated Sep 2, 2026.

For the 2023 Honda CR-V

Sport Touring Hybrid

Ignored

Relevance of 2% is under one half, so the notice is ignored whatever the other figures say.

Vehicle relevance: 2%
Attention: 5%
Interrupt probability: 5%

Importance to this owner: 0.0 of 4, none
Vehicle area the notice is about: None

This manufacturer communication does not appear to warrant attention for this vehicle.

Decided by jev-1.13.0 in 165 ms from 1,739 input tokens. Jev returns these figures and nothing else. It gives no reasons, and none are written for it here. The figures describe how relevant the notice is, not the condition of any vehicle.

Checked by code against NHTSA's fields

A plain comparison with the structured fields NHTSA filled in. Separate from Jev's decision.

NoNHTSA names this make

NoNHTSA names this model

n/aNHTSA lists model year 2023 for this model

The same notice, every vehicle

Relevance	Attention	Interrupt	State
2%	5%	5%	Ignored
2%	8%	9%	Ignored
2%	5%	6%	Ignored
1%	5%	6%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	6%	Ignored
1%	5%	5%	Ignored
1%	5%	6%	Ignored
1%	5%	6%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	5%	6%	Ignored
1%	4%	4%	Ignored
1%	4%	6%	Ignored

Select a vehicle to see its attention and interrupt figures above.