2024-2025 Jeep Compass Thermostat Stuck Open TSB

Stellantis has released Technical Service Bulletin (TSB) 07-006-24 REV. B to address a condition where the thermostat may be stuck open in certain 2024-2025 Jeep Compass vehicles. This issue can lead to a "Malfunction Indicator Lamp (MIL) illumination" on the dashboard and specific diagnostic trouble codes. Owners might also experience a lack of cabin heating or notice that the engine is running cold.

This bulletin, issued on September 24, 2024, supersedes a previous version, TSB 07-006-24 REV. A, dated August 13, 2024. The primary cause identified for this problem is a faulty thermostat, leading to the Jeep Compass thermostat stuck open condition.

Symptoms

Owners of affected vehicles may observe one or more of the following symptoms:

• A "Malfunction Indicator Lamp (MIL) illumination" on the instrument cluster.
• The vehicle setting Diagnostic Trouble Code (DTC) P0128-00.
• A lack of heat inside the cabin, with the owner commenting "The vehicle does not have heat inside the cabin."
• The engine running at a lower-than-normal temperature, described as "The engine is running cold."

Fault Codes / DTCs

When the thermostat is stuck open, the vehicle's diagnostic system may record the following code:

Code	Description	Module
P0128-00	Termostato Elétrico - Racionalidade	Engine

Diagnosis / Trigger Conditions

To diagnose this issue, technicians are instructed to use a wiTECH scan tool. This tool helps verify that all related systems are functioning correctly. If any DTCs or symptom conditions other than those listed in this bulletin are present, they should be recorded and addressed before proceeding with the thermostat replacement.

It is crucial to check if the customer's Vehicle Identification Number (VIN) is listed in VIP or on the Rapid Service Update (RSU) 24-112 VIN list. If the VIN is on the list, the repair should be performed. If the vehicle is not on the RSU list but exhibits any of the symptoms detailed above, the repair procedure should still be followed.

Repair Procedure Summary

The repair for a Jeep Compass thermostat stuck open involves replacing the faulty thermostat. The general steps are:

1. Verify if the vehicle's VIN is included in the RSU list. If it is, proceed with the replacement.
2. If the vehicle is not on the RSU list, this bulletin does not apply unless the customer is experiencing the listed symptoms.
3. Replace the thermostat. Detailed service procedures can be found in DealerCONNECT > Service Library under the code 1088C40 - Valvula termostatica - remocao/recolocacao, which includes all necessary removal and reinstallation steps.

Required Tools or Parts

To perform this repair, the following parts and tools are specified:

• Special Tool: wiTECH or equivalent diagnostic scan tool.
• Thermostat: Part Numbers 7096849 - SA or 68723784AA - NA (includes gasket).
• Antifreeze, Coolant: Part Numbers 7092803 - SA or 68626281AA - NA (as required).

Important Warnings

Owners should be aware that this TSB 07-006-24 REV. B supersedes an earlier version, TSB 07-006-24 REV. A, issued on August 13, 2024. Any old versions of the bulletin should be disregarded. Additionally, this Technical Service Bulletin has been released as Rapid Service Update (RSU) 24-112, dated August 09, 2024. All applicable RSU VINs have been loaded into the system. To confirm if your vehicle is covered by this RSU service action, a VIN search can be performed in DealerCONNECT/Service Library.

Owner Action

If your 2024-2025 Jeep Compass exhibits any of the symptoms described, such as a "Malfunction Indicator Lamp (MIL) illumination," DTC P0128-00, lack of cabin heat, or a cold-running engine, you should contact your authorized Stellantis dealer. The repair, which involves replacing the thermostat, is reimbursable under the provisions of your vehicle's warranty. The labor operation for this repair is 07-40-01-93, with an estimated labor time of 0.9 hours.

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Source: NHTSA ID 11008195