# Service bulletin 0901623

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: 10242834
- Published by NHTSA: 2023\-09\-25
- Manufacturer's number: 0901623
- Manufacturer's date: 2023\-07\-28
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Incorrect Coolant Mix \(Low Temp System\) Rising temperature gauge with dash warning light and possible engine overheating cluster message. This bulletin involves draining the low temp coolant system and filling with new coolant.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10242834-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10242834-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2023 JEEP COMPASS

## 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\-022\-26](/bulletins/11037275.md), 2026-09-10, Service bulletin: ENGINE. Not applicable to vehicles built for US market. Right Engine Insulator Noise \*\*Customers may comment on the following:\*\* SYMPTOM: ● Metallic clicking noises when when moving the vehicle forward and reverse. \*\*This bulletin involves replacing the right engine insulator.\*\*
- [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\-018\-26](/bulletins/11036159.md), 2026-08-13, Service bulletin: ENGINE. Not applicable to vehicles built for US market. Cylinder Head Screw Not Specific Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P1212 \- Engine Oil Temperature High \- RPM Limited. Customers may also experience the following: ● Engine overheating. This bulletin involves replacing the cylinder head to block bolts and head gasket.
- [07\-005\-26](/bulletins/11035310.md), 2026-07-29, Service bulletin: STRUCTURE:BODY; ENGINE. Not applicable to vehicles built for US market. M1 H1 Coolant Leak Customers may comment on one or more of the following: SYMPTOM: ● Possible overheat light on instrument cluster. ● Coolant leak from hose that contacts exhaust heat shield. This bulletin involves replacing an engine coolant hose.
- [112639](/bulletins/11034912.md), 2026-07-08, Service bulletin: ENGINE. THROTTLE BODY – NONE
- [112640](/bulletins/11034911.md), 2026-07-08, Service bulletin: ENGINE. THROTTLE BODY – NONE
- [112842](/bulletins/11034335.md), 2026-07-02, Service bulletin: ENGINE. BOLT \- HEX FLANGE HEAD

JSON: [/v1/bulletins/10242834](/v1/bulletins/10242834)

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