# Service bulletin SSM 51754

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: 10238446
- Published by NHTSA: 2023\-07\-03
- Manufacturer's number: SSM 51754
- Manufacturer's date: 2023\-06\-29
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Some 2023 Bronco/Ranger/Explorer vehicles equipped with a 2.3L EcoBoost engine and built on 27\-Mar\-2023 and through 18\-May\-2023 may experience a loss of coolant with coolant in the oil. This may be caused by a cracked engine block. If this condition is present, replace the engine long block assembly. Refer to Workshop Manual \(WSM\), Section 303\-01. For claiming use causal part number 6010 and applicable labor operations in Section 06 of the Service Labor Time Standards \(SLTS\) Manual.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10238446-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10238446-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2023 FORD BRONCO
- 2023 FORD EXPLORER
- 2023 FORD RANGER

## Recalls for the same vehicles and component

- [26V468000](/recalls/nhtsa/26V468000.md), 2026-07-20: ENGINE; ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD
- [23V597000](/recalls/nhtsa/23V597000.md), 2023-08-25: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

## Other bulletins for the same vehicles and component

- [SSM 55228](/bulletins/11038440.md), 2026-10-12, Service bulletin: ENGINE; UNKNOWN OR OTHER. Some 2020\-2026 Aviator/Explorer/F\-150/Bronco/Ranger vehicles equipped with a 2.7L or 3.0L \(non\-diesel\) engine may need the front engine cover removed and reinstalled for various reasons. The Workshop Manual \(WSM\), Section 303\-01 Engine \> Removal and Installation \> Engine Front Cover service procedure has been updated to include a new essential special service tool \(ESST\) guide pin alignment tool \(303\-1790\) that is used to align the engine front cover to the engine block, preventing the O\-ring seal on the engine oil galley feed tube from getting damaged during installation.
- [SSM 55217](/bulletins/11038165.md), 2026-10-06, Service bulletin: ENGINE; UNKNOWN OR OTHER. Some 2020\-2024 Explorer/Aviator vehicles equipped with 3.0L EcoBoost/hybrid engine may exhibit blue or black exhaust smoke on startup for the first 5 minutes after an overnight cold soak with no illuminated malfunction indicator lamp \(MIL\) or powertrain diagnostic trouble codes \(DTCs\) present. This may be due to engine oil breaching the dynamic oil seals separating the bearing core from the turbine housing in the left side turbocharger assembly. There is a new, updated left side turbocharger oil supply tube equipped with an internal check valve to prevent the engine oil from entering turbine housing after the engine is off. Replace the existing left side turbocharger oil supply tube with the updated service part that includes the check valve \(service part\# L1MZ\-9T516\-B\) or latest level part. Refer to the Workshop Manual \(WSM\), Section 303\-04 Fuel Charging and Controls \- Turbocharger \> Removal and Installation \> Turbocharger Oil Supply Tube LH. For claiming, use causal part 9T516 and labor operation code 9440AL.
- [25B51](/bulletins/11033577.md), 2026-06-05, Other: ENGINE. Certain 2021\-2024 Model Year Bronco, 2021\-2024 Model Year Bronco Sport, 2020\-2022 Model Year Corsair and Escape, 2016\-2024 Model Year Explorer, 2019\-2020 Model Year Fusion, 2016\-2018 Model Year Focus RS, 2022\-2024 Model Year Maverick, 2016\-2019 Model Year MKC and 2019\-2024 Model Year Ranger Vehicles Equipped with a 2.0L or 2.3L Engine and Engine Block Heater System Block Heater Replacement
- [SSM 54795](/bulletins/11032565.md), 2026-05-08, Service bulletin: ENGINE; ELECTRICAL SYSTEM; POWER TRAIN. Some 2021\-2023 F\-150 vehicles equipped with a 3.5L PowerBoost engine and 2020\-2026 Explorer vehicles equipped with a 3.3L hybrid engine may exhibit an illuminated powertrain malfunction \(wrench\) indicator with diagnostic trouble code \(DTC\) P0A1E stored in the powertrain control module \(PCM\). The vehicle may be unable to enter electric\-only drive modes as expected during normal drive cycles. This may be due to the software within the belt integrated starter generator \(BISG\). For vehicles with this condition, follow Pinpoint Test I: Battery Isolation/Voltage Stabilization Control Circuit Carry Outance located in the Workshop Manual \(WSM\), Section 303\-06D and repair the vehicle as necessary. Note that the BISG is on backorder status at the time of this publication and Ford is working to make parts available. Engineering is investigating this concern. Monitor PTS for updates.
- [SSM 54756](/bulletins/11031411.md), 2026-04-21, Service bulletin: ENGINE. 2021\-2026 Explorer vehicles equipped with the 2.3L EcoBoost engine may require air conditioning \(A/C\) compressor belt removal for various reasons. The Workshop Manual \(WSM\), Section 303\-05A Accessory Drive \- 2.3L EcoBoost \> Removal and Installation \> Air Conditioning \(A/C\) Compressor Belt procedure has been revised to eliminate cutting the A/C compressor belt to remove it. Refer to the updated procedure to reuse the belt.
- [SSM 54275](/bulletins/11024271.md), 2025-10-14, Service bulletin: ENGINE. Some 2021\-2023 Explorer vehicles equipped with a 3.0L EcoBoost engine, 2021\-2023 Aviator vehicles equipped with a 3.0L EcoBoost or 3.0L plug\-in hybrid electric vehicle \(PHEV\) engine, 2021\-2023 Edge/Nautilus vehicles equipped with a 2.7L EcoBoost, 2021\-2024 F\-150 vehicles equipped with a 2.7L EcoBoost, and 2021\-2024 Bronco and 2024 Ranger vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit a ticking/tapping or rattle type noise from the top front cover area of the engine. This noise may occur on initial start\-up after a cold soak of 6 hours or more that may last for 2\-5 seconds. This may be due to an internal component of the variable cam timing \(VCT\) unit. Workshop Manual \(WSM\), Section 303\-00 \> Diagnosis and Testing \> Engine \> Pinpoint Test F has been updated to include additional steps along with a video to identify the affected VCT unit that requires replacement.
- [SSM 54016](/bulletins/11020410.md), 2025-07-08, Service bulletin: ENGINE. Some 2021\-2025 Bronco and 2024\-2025 Ranger vehicles equipped with a 2.7L/3.0L EcoBoost engine may require removal of the engine front cover due to various concerns. Workshop Manual, Section 303\-01 has been updated with improved engine front cover removal and installation service procedure steps including a new body removal and install step.
- [SSM 53973](/bulletins/11020044.md), 2025-07-02, Service bulletin: POWER TRAIN; ENGINE. Some 2021\-2024 Edge/Nautilus, 2021\-2025 Bronco/Bronco Sport/E\-Series/Escape/Corsair/Expedition/Navigator/Explorer/Aviator/F\-150/F\-Super Duty/Mustang/Ranger, and 2022\-2025 Maverick vehicles may require an A/C compressor clutch assembly replacement be performed for various concerns. Workshop Manual \(WSM\), Section 412\-00 Removal and Installation has been updated to eliminate the need to remove and install the A/C compressor to change out the A/C Compressor clutch assembly.
- [SSM 53764](/bulletins/11018521.md), 2025-05-21, Service bulletin: POWER TRAIN; ENGINE. Some 2020 Continental, 2020\-2024 Edge/Nautilus, 2020\-2025 Explorer/Aviator/Escape/Corsair/F\-150/F\-Super Duty/Ranger/Transit/E\-Series, 2021\-2025 Bronco, and 2022\-2025 Maverick vehicles may require an engine cooling system flush to be performed for various concerns. Workshop Manual \(WSM\), Section 303\-03 has been updated to eliminate the need to remove and install the radiator assembly to perform a radiator flush.
- [SSM 52772](/bulletins/11006443.md), 2024-08-16, Service bulletin: ENGINE. Some 2020\-2024 F\-150, 2021\-2024 Bronco, and 2024 Ranger vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit a ticking/tapping or rattle type noise from the top front cover area of the engine on initial start\-up after a cold soak of 6 hours or more that may last for 2\-5 seconds. This may be due to a stuck internal component of the variable cam timing \(VCT\) unit.

JSON: [/v1/bulletins/10238446](/v1/bulletins/10238446)

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