TSB CS2303B — Kia Service bulletin
CS2303B is a service bulletin on file with NHTSA for the Kia Optima, 2011–2015 model years, filed and re-filed as 2 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. CUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia has developed a software upgrade that can be installed on the vehicle to restrict the operation of the vehicle's ignition system should a locked vehicle be the subject…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years CS2303B names
Every document filed under CS2303B
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| CS2303B_OWNR2 | July 31, 2023 | Service bulletin |
| CS2303B_OWNR | February 17, 2023 | Service bulletin |
What CS2303B covers
Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB CS2303B?
CS2303B is a service bulletin filed with NHTSA by Kia, covering the Kia Optima across the 2011–2015 model years. NHTSA's summary reads: CUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia has developed a software upgrade that can be installed on the vehicle to restrict the operation of the vehicle's ignition system should a locked vehicle be the subject…
Which vehicles does CS2303B cover?
NHTSA's file names Kia Optima (2011–2015). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB CS2303B a recall, and is the repair free?
No. CS2303B is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of CS2303B?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under CS2303B, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under CS2303B. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.