# Service bulletin 09\-021\-25

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: 11021559
- Published by NHTSA: 2025\-08\-06
- Manufacturer's number: 09\-021\-25
- Manufacturer's date: 2025\-07\-29
- NHTSA component: ENGINE

## NHTSA's summary

Turbocharger Oil Return Line Leak Customers may experience the following: ● Engine oil leak from the turbocharger oil return line This bulletin involves replacing the turbocharger oil return line.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021559-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021559-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2025 JEEP COMPASS
- 2025 JEEP WRANGLER
- 2025 JEEP WRANGLER 4XE

## Recalls for the same vehicles and component

- [2025617](/recalls/tc/2025617.md), 2025-11-06: Engine
- [25V766000](/recalls/nhtsa/25V766000.md), 2025-11-06: ENGINE

## Other bulletins for the same vehicles and component

- [18\-081\-26](/bulletins/11038538.md), 2026-10-16, Service bulletin: ENGINE. Not applicable to vehicles built for US market. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P0607 \- Control Module Performance. Customers may also comment on one or more of the following: ● The vehicle will not start until the ignition is cycled for a second time. ● Engine malfunction \(injection\) warning lamp illuminated in the Instrument Panel Cluster \(IPC\). This bulletin involves reprogramming the PCM with the latest available software.
- [18\-081\-26](/bulletins/11038501.md), 2026-10-16, Service bulletin: ENGINE. Not applicable to vehicles built for US market. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P0607 \- Control Module Performance. Customers may also comment on one or more of the following: ● The vehicle will not start until the ignition is cycled for a second time. ● Engine malfunction \(injection\) warning lamp illuminated in the Instrument Panel Cluster \(IPC\). This bulletin involves reprogramming the PCM with the latest available software.
- [S2609000011](/bulletins/11037354.md), 2026-09-17, Service bulletin: ENGINE. MIL\-On and/or Engine Oil Leak
- [09\-010\-26 REV. B](/bulletins/11037278.md), 2026-09-10, Service bulletin: ENGINE. Not applicable to vehicles built for US market. Oil Leak Through The Rear Crankshaft Oil Seal \(Flywheel Side\) Customers may comment on the following: ● Oil Pressure warning light illuminates. ● Engine oil is leaking onto the floor beneath the vehicle This bulletin involves inspecting for oil leaks and if necessary replacing the rear crankshaft oil seal \(flywheel side\)
- [9100363 Rev 3](/bulletins/11036762.md), 2026-09-03, Service bulletin: ENGINE. Turbocharger Kit Please note that many turbo components are serviceable separately and full turbo replacement may not be required. If the turbo is being inspected for: Noise/Rattle: Inspect heat shield fasteners for looseness and check the wastegate actuator/linkage for binding. The actuator kit is serviced separately. Oil Leak: Inspect the turbo oil feed O\-ring area for leaks. O\-ring is serviced separately.
- [09\-021\-26](/bulletins/11036749.md), 2026-09-03, Service bulletin: ENGINE. Not applicable to vehicles built for US market. Noisy Timing Chain Tensioner Customers may experience the following: SYMPTOM: ● A metallic knocking noise coming from the timing chain area during engine operation. This bulletin involves replacing the timing chain tensioner.
- [09\-010\-26 REV. A](/bulletins/11035171.md), 2026-07-23, Service bulletin: ENGINE. Not applicable to vehicles built for US market. Oil Leak Through The Rear Crankshaft Oil Seal \(Flywheel Side\) Customers may comment on the following: SYMPTOM: ● Oil Pressure warning light illuminates. ● Engine oil is leaking onto the floor beneath the vehicle. This bulletin involves inspecting for oil leaks and if necessary replacing the rear crankshaft oil seal \(flywheel side\).
- [113241](/bulletins/11035082.md), 2026-07-18, Service bulletin: ENGINE. SPARK PLUG \- NONE
- [113240](/bulletins/11035081.md), 2026-07-18, Service bulletin: ENGINE. SPARK PLUG \- NONE
- [113271](/bulletins/11035078.md), 2026-07-18, Service bulletin: ENGINE. CORE – HEATER

JSON: [/v1/bulletins/11021559](/v1/bulletins/11021559)

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