Service bulletin TSB-TRA062R1

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10109681
Published by NHTSA	2017-08-02
Manufacturer's number	TSB-TRA062R1
Manufacturer's date	2016-10-26
NHTSA component	ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN

NHTSA's summary

TSB: SERVICE ACTION: TCU UPGRADE ? DRIVING PERFORMANCE IMPROVEMENT (SA246) - This bulletin provides information related to the Transmission Control Unit (TCU) software upgrade for some 2017MY Sorento (UMa) 3.3L GDI vehicles produced from April 6, 2016 to October 20, 2016 for a logic improvement. To apply the improved logic, the TCU should be reprogrammed using the GDS/KDS download, as described in this bulletin.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline, Software

Vehicles listed
KIA SORENTO	2017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
PI1802_TSB_R8	2019-12-09. Service bulletin. TSB - Product Improvement Campaign: KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1802) - This bulletin has been revised to include additional information. This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS) in order to protect the engine from excessive connecting rod bearing damage.
PI1802WX_TSB_R5	2019-04-30. Service bulletin. TSB: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X) - This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802, Rev 6, 01/31/2019) titled "Knock Sensor Detection System - ECU Logic Improvement". Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code ("DTC"), P1326.
PI1802WX_TSB_R4	2019-04-30. Service bulletin. TSB: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X) - This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802, Rev 6, 01/31/2019) titled "Knock Sensor Detection System - ECU Logic Improvement". Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code ("DTC"), P1326.
VPI1802_QA	2018-08-06. Service bulletin. Q & A - This document is the Q & A for the new Product Improvement Campaign to provide information regarding a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage.
VPI1802_DSM	2018-08-06. Service bulletin. DEALER SERVICE MANAGER NOTICE - This notice advised the dealer service manager of the new Product Improvement Campaign to perform a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage.
VPI1802_DP	2018-08-06. Service bulletin. DEALER PRINCIPAL NOTICE - This notice advised the dealer principal of the new Product Improvement Campaign to perform a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage.
TSB-ELE106	2017-08-02. Service bulletin. TSB: INSTRUMENT CLUSTER REPLACEMENT, SOFWARE UPGRADE AND MILEAGE SETTING - This bulletin provides the procedure to perform a software upgrade and mileage setting on 2015MY~ Sedona (YP), 2016MY~ Sorento (UMa), and 2017MY~ Forte (YD, YDm) vehicles with newly replaced instrument clusters.
TSB-ELE115	2017-08-02. Service bulletin. TSB: AVN 4.0 SOFTWARE UPDATE FOR ?BLUETOOTH PHONEBOOK DOWNLOADS AT EVERY VEHICLE START? - This bulletin provides the procedure for updating the AVN 4.0 (Audio/Video/Navigation) software on some Sorento (UMa) vehicles that frequently display a ?Priority phone pop-up? or ?Phonebook download pop-up? at vehicle startup. Additionally, voice guidance that the phonebook is downloading is heard and the customer is unable to stop or skip the voice guidance. This concern typically happens when more than one (1) phone has been paired. Follow the procedure outlined in this bulletin to improve the AVN 4.0 logic.
TSB-TRA063	2017-08-02. Service bulletin. TSB: SERVICE ACTION: TCU UPGRADE ? DRIVING PERFORMANCE IMPROVEMENT (SA250) - This bulletin provides information related to the Transmission Control Unit (TCU) software upgrade for some 2017MY Sorento (UMa) 2.4L GDI vehicles produced from April 7, 2016 to October 22, 2016 for a logic improvement. To apply the improved logic, the TCU should be reprogrammed using the GDS/KDS download, as described in this bulletin.
TSB-TRA064	2017-08-02. Service bulletin. TSB: SERVICE ACTION: TCU UPGRADE ? DRIVING PERFORMANCE IMPROVEMENT (SA251) - This bulletin provides information related to the Transmission Control Unit (TCU) software upgrade for some 2017MY Sorento (UMa) 2.0T-GDI vehicles produced from April 7, 2016 to October 27, 2016 for a logic improvement. To apply the improved logic, the TCU should be reprogrammed using the GDS/KDS download, as described in this bulletin.