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Service bulletin 23-BR-004H

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 id10245577
Published by NHTSA2023-11-30
Manufacturer's number23-BR-004H
Manufacturer's date2023-11-06
NHTSA componentSERVICE BRAKES, HYDRAULIC

NHTSA's summary

Certain Tucson (NX4A), Santa Cruz (NXT), Santa Fe (TMA), and Santa Fe Hybrid (TMA HEV) vehicles may exhibit a brake judder condition. This bulletin describes the procedure to inspect the brakes, resurface or replace and perform a brake burnishing procedure.

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

Brakes

Vehicles listed
HYUNDAI SANTA CRUZ2022, 2023
HYUNDAI SANTA FE2022, 2023
HYUNDAI SANTA FE HYBRID2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
HYUNDAI TUCSON2022, 2023

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
23-01-036H-12023-06-30. Service bulletin. Certain Hyundai Elantra, Sonata, and Santa Fe vehicles may exhibit the Electronic Parking Brake (EPB) warning light on due to brake fluid entering the HECU (Hydraulic Electronic Control Unit) electrical connector. DTC C1501 (EPB Switch Failure) may be present, but EPB performance remains unaffected.
23-01-036H-12023-06-30. Service bulletin. Some Elantra (CN7A), Sonata (DN8A) and Santa Fe (TMA) vehicles may exhibit the Electronic Parking Brake (EPB) warning light on due to brake fluid entering the HECU electrical connector. DTC C1501 (EPB Switch Failure) may be present, but EPB performance remains unaffected. This bulletin describes the procedure to inspect, and if necessary, replace the Hydraulic Electronic Control Unit (HECU).
23-01-036H2023-06-02. Service bulletin. Some Elantra (CN7A), Sonata (DN8A) and Santa Fe (TMA) vehicles may exhibit the Electronic Parking Brake (EPB) warning light on due to brake fluid entering the HECU electrical connector. DTC C1501 (EPB Switch Failure) may be present, but EPB performance remains unaffected. This bulletin describes the procedure to inspect, and if necessary, replace the Hydraulic Electronic Control Unit (HECU).