# Service bulletin 20\-FL\-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.

- Type: Service bulletin
- NHTSA id: 10176198
- Published by NHTSA: 2020\-06\-06
- Manufacturer's number: 20\-FL\-004H
- Manufacturer's date: 2020\-05\-29
- NHTSA component: SERVICE BRAKES, HYDRAULIC; ENGINE AND ENGINE COOLING; POWER TRAIN

## NHTSA's summary

This bulletin describes the Idle Stop and Go \(ISG\) system operation, diagnostic and battery sensor recalibration procedure. Refer to applicable Shop Manual and Owner’s Manual for additional information.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176198-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176198-9999.pdf)

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

## Components

Brakes, Engine, Transmission and driveline

## Vehicles listed

- 2020 HYUNDAI ELANTRA
- 2020 HYUNDAI PALISADE
- 2020 HYUNDAI SANTA FE
- 2020 HYUNDAI SONATA

## Recalls for the same vehicles and component

- [2021252](/recalls/tc/2021252.md), 2021-04-28: Engine
- [21V301000](/recalls/nhtsa/21V301000.md), 2021-04-28: ENGINE

## Other bulletins for the same vehicles and component

- [26\-EM\-016H TSB](/bulletins/11038458.md), 2026-10-14, Service bulletin: ENGINE. Some vehicles equipped with internal combustion engines may exhibit higher\-than\-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26\-EM\-015H, Engine Oil Consumption – Inspection \& Repair Guidelines, or the latest revision.
- [26\-EM\-015H TSB](/bulletins/11038456.md), 2026-10-13, Service bulletin: ENGINE. Certain vehicles equipped with internal combustion engines may exhibit higher\-than\-expected engine oil consumption. This bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. All internal combustion engines consume engine oil as part of normal engine operation. Oil consumption rates may vary based on mileage, operating conditions, driving habits, and maintenance history. Hyundai recommends following the prescribed maintenance schedule and periodically checking the engine oil level using the dipstick to maintain proper engine oil level.
- [26\-EM\-017H TSB](/bulletins/11038430.md), 2026-10-09, Service bulletin: ENGINE. Certain Palisade \(LX2\) and Santa Fe \(NC\) vehicles equipped with Lambda II 6\-cylinder engines may exhibit higher\-than\-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26\-EM\-015H, Engine Oil Consumption – Inspection \& Repair Guidelines, or the latest revision.
- [9D3 OL](/bulletins/11037292.md), 2026-09-11, Service campaign: ENGINE; ELECTRICAL SYSTEM. Hyundai has become aware that your Hyundai Elantra equipped with a 2.0 ATK engine may have been incorrectly updated with Cylinder Noise Detection System \(CNDS\) software intended only for Korean\-built Elantra vehicles and may not meet specifications.
- [Z15 OL](/bulletins/11036207.md), 2026-08-15, Warranty extension: ENGINE. Certain 2020 – 2025 model year Palisade vehicles may exhibit engine oil leakage at the engine oil filter housing assembly due to deterioration of the housing seal. At Hyundai, we are committed to providing vehicles of outstanding quality and value. In an effort to meet this commitment, the warranty coverage for the Engine Oil Filter Housing Seal under these conditions has been extended to 15 years/180,000 miles from the date of original retail delivery or date of first use \(whichever occurs first\) and is valid for original and subsequent owners.
- [26\-01\-039H DN](/bulletins/11036204.md), 2026-08-15, Service campaign: ELECTRICAL SYSTEM; ENGINE. Certain Elantra \(ADA\) vehicles may have been incorrectly updated with Cylinder Noise Detection System \(CNDS\) software that can set DTC P132700; this software was intended only for Korean\-built Elantra \(AD\) vehicles. In addition, the California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
- [26\-01\-039H TSB](/bulletins/11036202.md), 2026-08-15, Service campaign: ELECTRICAL SYSTEM; ENGINE. Certain Elantra \(ADA\) vehicles may have been incorrectly updated with Cylinder Noise Detection System \(CNDS\) software that can set DTC P132700; this software was intended only for Korean\-built Elantra \(AD\) vehicles. This bulletin provides instructions to perform a software update for the Engine Control Module \(ECM\) to revert to the original ROM ID, apply the emissions label under the hood, and provide the vehicle owner with Proof of Correction.
- [26\-EM\-012H DCS](/bulletins/11033708.md), 2026-06-06, Warranty extension: ENGINE. Some Palisade \(LX2\) vehicles may exhibit engine oil leakage at the engine oil filter housing assembly due to deterioration of the housing seal. Hyundai is extending the warranty coverage for the engine oil filter housing seal to 15 years / 180,000 miles from the date of original retail delivery or date of first use \(whichever occurs first\) and is valid for original and subsequent owners. Follow the procedure in Technical Service Bulletin \(TSB\) 26\-EM\-012H to replace the engine oil filter housing seal in order to address this condition. Please note that any vehicles within 15 years / 180,000 miles are covered by this TSB, even if the vehicle is still within the New Vehicle Limited Warranty \(NVLW\) of 5 years / 60,000 miles or Powertrain Warranty of 10 years / 100,000 miles \(for the original owner\).
- [26\-EM\-012H DN](/bulletins/11033707.md), 2026-06-06, Warranty extension: ENGINE. Some Palisade \(LX2\) vehicles may exhibit engine oil leakage at the engine oil filter housing assembly due to deterioration of the housing seal. Hyundai is extending the warranty coverage for the engine oil filter housing seal to 15 years / 180,000 miles from the date of original retail delivery or date of first use \(whichever occurs first\) and is valid for original and subsequent owners. Please note any vehicles within 15 years / 180,000 miles are covered by this TSB, even if the vehicle is still within the New Vehicle Limited Warranty \(NVLW\) of 5 years / 60,000 miles or Powertrain Warranty of 10 years / 100,000 miles \(for the original owner\).
- [26\-EM\-012H TSB](/bulletins/11033706.md), 2026-06-06, Warranty extension: ENGINE. Some Palisade \(LX2\) vehicles may exhibit engine oil leakage at the engine oil filter housing assembly due to deterioration of the housing seal. Hyundai is extending the warranty coverage for the engine oil filter housing seal to 15 years / 180,000 miles from the date of original retail delivery or date of first use \(whichever occurs first\) and is valid for original and subsequent owners. Follow the procedure in this bulletin to replace the engine oil filter housing seal in order to address this condition.

JSON: [/v1/bulletins/10176198](/v1/bulletins/10176198)

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