# Service bulletin TSB\_ELE403

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.

- Type: Service bulletin
- NHTSA id: 11025764
- Published by NHTSA: 2025\-12\-01
- Manufacturer's number: TSB\_ELE403
- Manufacturer's date: 2025\-11\-08
- Campaign id or software version: SA632
- NHTSA component: ELECTRICAL SYSTEM; VISIBILITY/WIPER
- Manufacturer's system: ELE

## NHTSA's summary

TECHNICAL SERVICE BULLETIN: SERVICE ACTION: A/C COMPRESSOR REPLACEMENT \(SA632\) \- This bulletin provides information to address air conditioning performance issues reported on certain 2025\- 2026 model year Carnival \(KA4\) vehicles produced between December 1, 2024, and June 12, 2025. Customers may experience intermittent cooling or insufficient cooling at low blower speeds. The cause may be excessive clearance between the compressor piston and cylinder, which reduces refrigerant compression and results in inconsistent or weak cooling performance.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11025764-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11025764-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Glass, wipers and mirrors, Wipers and washers

## Vehicles listed

- 2025 to 2026 KIA CARNIVAL

## Other bulletins for the same vehicles and component

- [TSB\_ELE403\_R1](/bulletins/11025765.md), 2025-12-01, Service bulletin: VISIBILITY/WIPER. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: A/C COMPRESSOR REPLACEMENT \(SA632\) \- This bulletin has been revised as a Combination TSB/SA and includes additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to address air conditioning performance issues reported on certain 2025\-2026 model year Carnival \(KA4\) vehicles produced between December 1, 2024, and June 12, 2025. Customers may experience intermittent cooling or insufficient cooling at low blower speeds. The cause may be excessive clearance between the compressor piston and cylinder, which reduces refrigerant compression and results in inconsistent or weak cooling performance.

JSON: [/v1/bulletins/11025764](/v1/bulletins/11025764)

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