2025 Kia K4 technical service bulletins

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

• Jul 22, 2026 Service bulletinBody domain controller (BDC) replacement (CA2515
• May 28, 2026 Service bulletinInfotainment system software update using update.kia.com
• Apr 28, 2026 Service bulletinBody domain controller (BDC) replacement (CA2515)
• Apr 14, 2026 Service bulletinInfotainment software update procedure
• Mar 20, 2026 Service bulletinDcu communication logic improvement
• Dec 9, 2025 OtherPitstop: technical operations: external damage to ultrasonic sensor
• Dec 2, 2025 Over-the-air updateRelease notes: over-the-air: service action software update for warning lights (SA621)
• Sep 13, 2025 Service bulletinECM judgement logic improvement for DTC P218100 (SA621)
• Sep 12, 2025 OtherRelease notes: over-the-air: service action: software update for rcm (SA620)
• Aug 22, 2025 OtherPitstop: technical operations: dcu identification and daignostic aid
• Aug 7, 2025 Service bulletinBody domain controller (BDC) replacement (CA2507)
• Jun 27, 2025 Service bulletinSunroof operation logic improvement (SA620)
• Jun 26, 2025 Service bulletinSunroof operation software logic improvement (SA595) - closed and superseded by ELE390/SA620
• Jun 5, 2025 Service bulletinRear combination lamp bulb replacement (CA2506)
• Apr 17, 2025 Service bulletinTransmission fluid application guide
• Mar 6, 2025 Service bulletinCombination TSB/service action: ccnc – dealer mode, factory & network reset (SA613)
• Feb 26, 2025 Service bulletinWindshield washer fluid replacement (SA606)
• Feb 20, 2025 Service bulletinWindshield washer fluid replacement (SA606)
• Jan 29, 2025 Service bulletinKia connect activation failure (SA600)