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Service bulletins for the 2015 Hyundai Equus

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.

55 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Automatic transmission are shown. Show all

Bulletins, newest first
19-AT-011H2019-07-01. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. The procedure describes the procedure to check the ATF level for 8-speed Rear-Wheel-Drive vehicles.
19-AT-008H2019-05-20. Service bulletin. ENGINE; POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. When servicing a vehicle with a ?Check Engine light? and any of the DTCs listed below, follow the Service Procedure and replace the related solenoid and E-module.
19-AT-007H2019-05-20. Service bulletin. POWER TRAIN; EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION. This bulletin provides a procedure to transfer oil pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the TCU learning time and improve the shift quality.
5NP-H3D9Z-032017-08-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES. The following vehicles are equipped with an 8-speed automatic transmission. The ATF level can be checked by the procedure shown below.
5NP-D2Y6N-122017-01-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. "UPDATE THE WARRANTY INFORMATION. DESCRIPTION: DO NOT REPLACE THE TRANSMISSION FOR THE DTC LISTED BELOW. INSTEAD, FOLLOW THE REPAIR PROCEDURE AND REPLACE THE E-MODULE."
5NP-W7J6Y-112017-01-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. "AUTOMATIC TRANSMISSION SOLENOID & SENSOR REPLACEMENT FOR DTC P0741, P0743, P0748, P0753, P0758, P075A, P0763, P0768, P0773, P2709 & P0841"
5NP-J4N8R-012017-01-25. Service bulletin. VEHICLE SPEED CONTROL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN:AUTOMATIC TRANSMISSION. DO NOT REPLACE THE TRANSMISSION FOR THE DTC LISTED. INSTEAD, FOLLOW THE REPAIR PROCEDURE AND REPLACE THE E-MODULE.
5NP-Q9X6P-102016-10-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THIS BULLETIN PROVIDES A PROCEDURE TO TRANSFER PRESSURE DATA TO THE TCM USING GDS MOBILE. THIS PROCEDURE IS NECESSARY TO REDUCE THE TCM LEARNING TIME AND IMPROVE THE SHIFT QUALITY.
5NP-B6E2P-102016-10-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AXLE ASSEMBLY. "THE PCM OR TCM CONTAINS LOGIC TO ADJUST SOLENOID DUTY AND LINE PRESSURE AS NEEDED TO COMPENSATE FOR NORMAL CLUTCH WEAR OVER THE LIFE OF THE TRANSAXLE. THIS BULLETIN PROVIDES THE PROCEDURES NECESSARY TO RESET (ERASE) AND RELEARN THE PCM/TCM ADAPTIVE VALUES. AFTER THE FOLLOWING REPAIRS HAVE BEEN COMPLETED, THE PCM/TCM ADAPTIVE VALUES MUST BE RESET IN ORDER TO PROVIDE OPTIMUM SHIFT QUALITY. IF THE PROCEDURE IS NOT PERFORMED, THE TRANSMISSION MAY EXPERIENCE A SHIFT FLARE OR HARSH SHIFT. H REPLACE AUTOMATIC TRANSAXLE OR PCM/TCM H REPROGRAM OR EXCHANGE A PCM/TCM FROM ANOTHER VEHICLE"

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.