# Service bulletin 23\-01\-051H

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.

- Type: Service bulletin
- NHTSA id: 10238351
- Published by NHTSA: 2023\-06\-30
- Manufacturer's number: 23\-01\-051H
- Manufacturer's date: 2023\-06\-08
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM; POWER TRAIN

## NHTSA's summary

This bulletin provides information related to the cleaning of the cooling system and coolant change to address the following problem: • “Refill Inverter Coolant” warning light displayed on the cluster • No DTC’s present • Normal level of coolant in Inverter Reservoir Tank • Measured EWP Speed \> 2,800 RPM The cause of the warning light is due to increased EWP Speed due to poor flow of coolant inside the cooling circuit. The coolant in the system will be discharged and any foreign substances in the circuit will be flushed out with new coolant added in the end.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10238351-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10238351-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Transmission and driveline, Cooling system

## Vehicles listed

- 2022 HYUNDAI SANTA FE PLUG\-IN HYBRID

## Other bulletins for the same vehicles and component

- [23\-01\-052H\-1](/bulletins/10240088.md), 2023-08-02, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM; POWER TRAIN. This bulletin provides information related to the cleaning of the cooling system and coolant change to address the following problem: • “Refill Inverter Coolant” warning light displayed on the cluster • No DTC’s present • Normal level of coolant in Inverter Reservoir Tank • Measured EWP Speed \> 2,800 RPM The cause of the warning light is due to increased EWP Speed due to poor flow of coolant inside the cooling circuit. The coolant in the system will be discharged and any foreign substances in the circuit will be flushed out with new coolant added in the end. A new reservoir cap label will be added.
- [23\-01\-048H](/bulletins/10238348.md), 2023-06-30, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:COOLING SYSTEM. This bulletin provides information related to the replacement of the Owner’s Manual with a new version which contains correct information regarding the coolant used in the cooling system.
- [21\-EM\-012H](/bulletins/10206365.md), 2022-01-08, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. Certain vehicles listed below equipped with 2.5T turbo engines may have a misassembled check valve for the PCV \(Positive Crankcase Ventilation\) system, resulting in engine oil entering the intake and contaminating the air cleaner. This bulletin describes the procedure to clean the air intake system and replace the PCV check valve and air cleaner.

JSON: [/v1/bulletins/10238351](/v1/bulletins/10238351)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2023-01-051H&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10238351&vehicle=Service%20bulletin%2023-01-051H)