GROUP

MODEL

ELE

2025MY
EV6 (CVa)

NUMBER

DATE

410

January 2026

TECHNICAL SERVICE BULLETIN
SUBJECT:

3 WAY VALVE REPLACEMENT (CA2513)

This bulletin provides instructions for inspecting and replacing the High Voltage Battery Cooling System 3-Way
Valve on certain 2025MY EV6 (CV1a) vehicles produced from August 21, 2024, through July 7, 2025, which may
display an illuminated Malfunction Indicator Lamp (MIL) and Diagnostic Trouble Code (DTC) U112800 due to a
voltage deviation within the 3-Way Valve. There are no drivability issues associated with this condition. To
resolve this issue, follow the replacement procedure outlined in this bulletin. Before performing the repair, verify
that the vehicle’s VIN is included in the affected range.
Model

Production Date Range

EV6 (CV1a)

August 21, 2024, and July 7, 2025

DTC Description:

U1128000 – Lost Communication With Hybrid/EV Battery Electronic Coolant Valve “A”

 NOTICE
A Technical Service Bulletin is a field fix repair program without customer notification that may be performed
during the warranty period. Any dealer requesting to perform this repair outside the warranty period will
require DPSM approval.
This bulletin should only be performed with valid customer of a Malfunction Indicator Lamp (MIL) ‘ON’ MUST
be stated in the opening RO and Claim Notes with the related DTC’s stored.
Repair status for a VIN is provided on KDealer+ (Service → Warranty Coverage → Warranty Coverage Inquiry.
If ENG410/CA2513 is complete, subsequent or follow-up concerns must be address according to normal
Service/Warranty Guidelines.

A printed copy is for reference only; publication information can be updated at any time.
Always refer to KGIS for the latest information. After logging in kdealer.com, the newest technical
publications are listed in ‘Service Releases’ and has the latest service information that has been released.

Page 2 of 4

3 WAY VALVE REPLACEMENT (CA2513)

SUBJECT:

Flowchart:
DTC

DTC Description

U1128000

Lost Communication With Hybrid/EV Battery Electronic Coolant Valve “A”

Vehicle In

Is the MIL On?

Yes

Is DTC
U1128000 Stored?

No

Yes

Replace the 3 Way
Valve

No

Diagnose DTC and
Repair Malfunction

Vehicle Out

Note: A Vehicle Diagnosis Number (VDN) must be created for DTC U1128000 prior to ordering parts
and performing necessary procedure(s), as outlined in this TSB. If a VDN is not created, Parts Ordering
and Warranty claim submission issues WILL occur. Any claims for replacement parts are subject to
Warranty review and chargeback.
Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ELE410 EV6 (CVa) January 2026

Page 3 of 4
SUBJECT:

3 WAY VALVE REPLACEMENT (CA2513)

Repair Procedure 2WD:
1.

Replace the 3 Way Vavle by referring to
“EV6(CV1A) → 2025 → 160kW (2WD) / 70kW
160kW (AWD) → Cooling System → High
Voltage Battery Cooling System → 3 Way Valve
→ Removal and Installation → 2WD” in the
applicable Shop Manual on KGIS.

Repair Procedure AWD:
2.

Replace the 3 Way Vavle (A) by referring to
“EV6(CV1A) → 2025 → 160kW (2WD) / 70kW
160kW (AWD) → Cooling System → High
Voltage Battery Cooling System → 3 Way Valve
→ Removal and Installation → 4WD” in the
applicable Shop Manual on KGIS.

Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ELE410 EV6 (CVa) January 2026

Page 4 of 4

3 WAY VALVE REPLACEMENT (CA2513)

SUBJECT:

AFFECTED VEHICLE RANGE:
Model

Production Date Range

EV6 (CV1a)

August 21, 2024, and July 7, 2025

REQUIRED TOOL:
Tool Name

Part Number

Kia Diagnostic System

Figure

Comments

N/A

(KDS)

KDS + VCI

Coolant
Drain/Injection

0K253 J2300
Located at

Equipment

O/H 2
Cap Adapter

0K253 J2320

REQUIRED PART:
Model

Part Name

EV6 (CV1a) 2WD

Part Number

1

Assembly

EV6 (CV1a)

25660 XG400QQK

CoolantAntifreeze

2WD and AWD

Qty.

25660 KL200QQK

3 Way Valve

EV6 (CV1a) AWD

Figure

UM020 CH263

5 gallons

WARRANTY INFORMATION:
N Code: N99 C Code: C99
Model

Claim

Causal

Type

P/N

Qty.

Labor Op

Op

Replacement

Description

Code

Time

P/N

3 Way Valve

EV6 (CV1a)
2WD
V
EV6 (CV1a)

Repair

375W3
KL200

AWD

Replacement
0

Coolant
Drain/Injection

25660 KL200QQK

1

1.3

UM020 CH263

5

M/H

25660 XG400QQK

1

UM020 CH263

5

250A39R0

+

Qty.

250A39R1

Note: When substitute transportation is provided, manually enter sublet code ‘X2’ for rental expense
reimbursement or one roundtrip rideshare expense. Please make sure to submit any substitute
transportation claim at the time of the warranty expense.
Note: A Vehicle Diagnosis Number (VDN) must be created for DTC U1128000 prior to ordering parts
and performing necessary procedure(s), as outlined in this TSB. If a VDN is not created, Parts Ordering
and Warranty claim submission issues WILL occur. Any claims for replacement parts are subject to
Warranty review and chargeback.

Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: ELE410 EV6 (CVa) January 2026