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Service bulletin 20 AT-009H

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)
TypeService bulletin
NHTSA id10173536
Published by NHTSA2020-04-07
Manufacturer's number20 AT-009H
Manufacturer's date2020-03-10
NHTSA componentPOWER TRAIN

NHTSA's summary

If you are servicing a 2019 Santa Fe (2.0T) with a harsh 2-3 or 3-4 upshift when cold, follow the Service Procedure below.

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

Transmission and driveline

Vehicles listed
HYUNDAI SANTA FE2019

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
23-AT-003H-12023-09-06. Service bulletin. If you are servicing an 8-speed vehicle with a “Check Engine” light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness.
23-AT-005H2023-06-03. Service bulletin. This bulletin provides the procedure to update the TCU to revise the logic for P0741 (Torque converter clutch circuit).
22-AT-006H2022-06-10. Service bulletin. If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC listed below, follow the repair procedure and replace the related input/output speed sensor and harness.
22-AT-005H2022-05-10. Service bulletin. If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and valve body harness.
20-AT-005H-12020-11-06. Service bulletin. If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and valve body harness.
20-AT-022H2020-10-08. Service bulletin. This bulletin provides the procedure to update the TCU for a shift flare and shock on reacceleration when driving in Sport Mode.
20-AT-020H2020-10-08. Service bulletin. This bulletin provides a procedure to transfer pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the transmission learning time and improve the shift quality.
20-AT-019H2020-06-06. Service bulletin. If you are servicing any of the vehicles listed below with a harsh and/or delayed shift, use the GDS as shown in the Service Procedure to measure shift engagement time.
20-AT-017H2020-06-06. Service bulletin. If you are servicing an applicable vehicle with the following symptoms and DTC, follow the Service Procedure on Page 4. • Check Engine light on • DTC P0880/P088000 - TCM Power signal error open/short • Transmission stuck in 4th gear fail-safe • Harsh shift into Reverse and Drive
20-AT-016H2020-05-07. Service bulletin. The automatic transmission warranty repair policy authorizes in-dealership repairs of the following components for both OEM (new) and remanufactured automatic transmissions: