# Service campaign 26\-01\-068H TSB

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 campaign
- NHTSA id: 11036201
- Published by NHTSA: 2026\-08\-15
- Manufacturer's number: 26\-01\-068H TSB
- Manufacturer's date: 2026\-08\-06
- Campaign id or software version: 9D6
- NHTSA component: ENGINE; ELECTRICAL SYSTEM

## NHTSA's summary

Certain Palisade \(LX3\) vehicles may exhibit an engine misfire condition which may result in one or more of the DTCs listed below. This update also includes improved evaporative emissions diagnostic logic. This bulletin provides instructions to update the Engine Control Module \(ECM\) software to correct this condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036201-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036201-9999.pdf)

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

## Components

Electrical system, Engine

## Vehicles listed

- 2026 HYUNDAI PALISADE

## Recalls for the same vehicles and component

- [26V047000](/recalls/nhtsa/26V047000.md), 2026-01-26: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

## Other bulletins for the same vehicles and component

- [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.
- [9D4 RE\-EML](/bulletins/11037294.md), 2026-09-11, Service campaign: ELECTRICAL SYSTEM. The vehicle may experience Over\-The\-Air \(OTA\) update failures due to outdated Central Communication Unit \(CCU\) software.
- [26\-BE\-024H TSB](/bulletins/11036620.md), 2026-09-02, Service bulletin: ELECTRICAL SYSTEM. Some Palisade \(LX3\) and Palisade Hybrid \(LX3 HEV\) vehicles may exhibit a 12\-volt battery drain due to the passive entry feature of the Digital Key 2 premium causing repeated wakeup of the vehicle. This bulletin provides instructions to perform software updates for the Ultra\-Wide Band \(UWB\) and Body Domain Control \(BDC\) modules.
- [26\-01\-026H\-1 WebDCS](/bulletins/11036209.md), 2026-08-15, Warranty extension: ENGINE. Certain Palisade \(LX3\) and Palisade Hybrid \(LX3 HEV\) vehicles may exhibit a “Check Active Air Flap System" warning message, Engine MIL ON, and/or “Low Engine Oil" warning message, due to improper operation of the Active Air Flap \(AAF\) system. DTCs include, but are not limited to: P05AE00, P05B100, P05B200, P05B400, P05FE00, P15A200, P15A500, P2C7400, U028500, U028B00, and/or U100800. This condition may be caused by water ingress and corrosion at the wiring connections for the lower AAF actuators and/or sensors.
- [26\-01\-026H\-1 TSB](/bulletins/11036208.md), 2026-08-15, Warranty extension: ENGINE. Certain Palisade \(LX3\) and Palisade Hybrid \(LX3 HEV\) vehicles may exhibit a “Check Active Air Flap System” warning message, Engine MIL ON, and/or “Low Engine Oil” warning message, due to improper operation of the Active Air Flap \(AAF\) system. DTCs include, but are not limited to: P05AE00, P05B100, P05B200, P05B400, P05FE00, P15A200, P15A500, P2C7400, U028500, U028B00, and/or U100800. This condition may be caused by water ingress and corrosion at the wiring connections for the lower AAF actuators and/or sensors. This bulletin contains instructions to inspect the front bumper wiring connectors, AAF actuators, and sensors for water ingress and corrosion, and to replace them if necessary.
- [26\-01\-068H DN](/bulletins/11036203.md), 2026-08-15, Service campaign: ENGINE; ELECTRICAL SYSTEM. Certain Palisade \(LX3\) vehicles may exhibit an engine misfire condition which may result in one or more of the DTCs listed below. This update also includes improved evaporative emissions diagnostic logic.
- [26\-EC\-001H TSB](/bulletins/11036098.md), 2026-08-11, Service bulletin: ENGINE. Some Palisade Hybrid \(LX3 HEV\) vehicles may exhibit continuous engine operation due to the vehicle being unable to enter EV/HEV modes. The vehicle may initially start in EV/HEV mode, but will quickly transition to running the engine only and will not revert back to EV/HEV mode. The “EV” light may intermittently flicker on, but the vehicle will not change modes. This bulletin provides instructions to perform the “Evaporative Leakage Test” function on the GDS to enable EV/HEV mode activation.
- [26\-01\-055H DCS](/bulletins/11034849.md), 2026-07-08, Warranty extension: ELECTRICAL SYSTEM. Certain Palisade Hybrid \(LX3 HEV\) vehicles may illuminate the Malfunction Indicator Lamp \(MIL\) and display a false “Check Hybrid System” warning message after use of Bluelink Remote Start following extended parking periods. Related DTCs associated with the MIL include U116087, U016487, U100787, U012987, U010087, U100387, U100287, U010187, and U015587. Technical Service Bulletin \(TSB\) 26\-01\-055H provides instructions to perform a Vehicle Platform Controller \(VPC\) software update to prevent these conditions.
- [26\-01\-055H TSB](/bulletins/11034848.md), 2026-07-08, Warranty extension: ELECTRICAL SYSTEM. Certain Palisade Hybrid \(LX3 HEV\) vehicles may illuminate the Malfunction Indicator Lamp \(MIL\) and display a false “Check Hybrid System” warning message after use of Bluelink Remote Start following extended parking periods. This bulletin provides instructions to perform a Vehicle Platform Controller \(VPC\) software update to prevent these conditions.
- [9D4 OL](/bulletins/11034842.md), 2026-07-08, Service campaign: ELECTRICAL SYSTEM. Hyundai has become aware that your Hyundai Palisade may experience Over\-the\-Air \(OTA\) update failures due to outdated Central Communication Unit \(CCU\) software.

JSON: [/v1/bulletins/11036201](/v1/bulletins/11036201)

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