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Service bulletins for the 2018 Jeep Compass

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.

333 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
W20 Combo Phase22021-02-16. Service bulletin. POWER TRAIN. Customer Satisfaction Notification W20 Reprogram Powertrain Control Module
18-098-202020-11-30. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates - AN-M4-20200919 Refer to China Joint Venture (JV) released document AN-M4-20200919 for details on this service action.
18-078-202020-10-26. Service bulletin. POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set:DTC P1DD2 will be stored in the Transmission Control Module (TCM) however no DTCs will be stored in the PCM. Verify no unrelated codes are stored in the PCM before flashing. If codes are stored in the PCM, normal diagnosis should be performed.B25C9 - Driver Door Ajar Switch 2 Stuck Closed. P061A - Level 2 Torque Performance. P06E9 - Engine Starter Performance(North America Only). C050D - Wheel Speed Signal Left Rear Rationality. C0501 - Wheel Speed Signal Left Front Rationality. C0507 - Wheel Speed Signal Right Front Rationality. C0513 - Wheel Speed Signal Right Rear Rationality. P1DD2 - Torque Request Signal From TCM Denied will be present, set by the TCM and the vehicle will be in limp home mode(Sales Codes DF5 and DF7 - Automatic Transmission Vehicles Only). U1428 - Inaccurate Engine Torque Received(Sales Codes DF5 and DF7 Only). Customers may also comment on one of the following:Poor shift quality. Lack of vehicle speed. Vehicle will intermittently not start(South Korea Only). The vehicle is in limp home mode (shift RPMs are limited) with no DTCs set(Sales Code DE1 - Manual Transmission Vehicles Only).
18-075-202020-10-26. Service bulletin. POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following DTCs have been set:C050D - Wheel Speed Signal Left Rear Rationality.C0501 - Wheel Speed Signal Left Front Rationality. C0507 - Wheel Speed Signal Right Front Rationality. C0513 - Wheel Speed Signal Right Rear Rationality. P0340 - Camshaft Position Sensor Circuit - Bank 1 Sensor 1. P0335 - Crankshaft Position Sensor Circuit. P0339 - Crankshaft Position Sensor Intermittent. In addition, customers may experience the following concern:When using the adaptive cruise control and coming to a complete stop, the MIL light illuminates(ED6 engine only). In addition, the following software enhancements to the following DTCs:B25BC - Left Front Door Ajar Switch Stuck Closed(ED6 engine only). P0573 - Brake Switch 1 Stuck Off(ED6 engine only).
S20210000042020-08-24. Service bulletin. POWER TRAIN. Valve Body Learn Procedure On WiTech Shows The Transmission Is Not In The Proper Gear After Repairs
S20080000752020-07-27. Service bulletin. POWER TRAIN. No Start, Start Stop Inoperative, Cluster Messages to Service Shifter or Service Start Stop System
18-044-202020-06-22. Service bulletin. FUEL SYSTEM, GASOLINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience one or more of the following conditions: Intermittent Engine Stop/Start (ESS) operation (Sales Code ECL only). Reduced battery life (Sales Code ECL only). Hard or no start condition (under certain conditions after the fuel tank has been filled with a different fuel type). False low oil pressure lamp illuminated in the cluster. A hard or no start condition when using only E22 fuel. Oil change message was displayed at the wrong time. When Adaptive Cruise Control (ACC) is illuminated, the normal cruise control active message is displayed (Sales Code NHZ). Additional enhancement included in this software: Alternator Smart Charging calibration improvements.
08-051-202020-05-26. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Electronic Shift Module (ESM) Updates This bulletin involves reprogramming the Electronic Shift Module (ESM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician mayfind that the following DTC has been set:P0814-00 - Transmission Range Display Circuit. The customer may describe:PRNDM light flickers or no illumination at all. While the engine is cranking, the customer can shift out of park, resultingin engine stall
S20180000032020-05-26. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Customer complaint may include MIL/Check Engine lamp on. Upon further inspection, fault code P219A - Bank 1 Air-Fuel Ratio Imbalance may be found in the powertrain control module (PCM) as pending, active, or stored. Other fault codes P1066, P1068, P106A, or P106C (Solenoid Valve Switch Off Time Out of Range) may also be stored. Customer may also complain about loss of power or engine running rough while P219A is active.
90042442020-05-26. Service bulletin. POWER TRAIN; FUEL SYSTEM, GASOLINE. COOLER, Transmission Oil Work procedure to address fluid leak issue with the transmission oil cooler on the MP (Part # 68249191A$), KL (Part # 68399021A$) and RU (Part # 68217322A$) needs to be followed. Service Instructions for the Condition of a TOC fluid leak: 1) Mark the leakage area if visible to assist in diagnosis and determination of the area where the leak has occurred. 2) If fluid leak was caused by damage or leakage at the transmission oil cooler: - Replace transmission oil cooler - Test drive and verify no additional fluid leaks 3) If fluid leak was caused by leak at quick connect fittings: - Replace transmission oil cooler lines - Test drive and verify no additional fluid leaks
18-064-19 REV. A2020-01-21. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P16A2 - ETC Motor Self-Learning (Limp Home Position). P023E - Turbocharger Pressure And Manifold Pressure Plausibility (Signal Rate Of Change Below Threshold)Euro Stage 6D Emissions (Sales Code NBD). Customer may also experience the following:Engine hesitation/surge feeling after a cold engine start and while driving in 2nd gear under 3000 rpm (customer may comment that the engine doesn't give full power until after a couple minutes)Euro Stage 6D Emissions (Sales Code NBD).
18-091-192019-12-16. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set:DTC P1DD2 will be stored in the Transmission Control Module (TCM) however no DTCs will be stored in the PCM. Verify no unrelated codes are stored in the PCM before flashing. If codes are stored in the PCM, normal diagnosis should be performed.P06E9 - Engine Starter Performance(North America Only). C050D - Wheel Speed Signal Left Rear Rationality. C0501 - Wheel Speed Signal Left Front Rationality. C0507 - Wheel Speed Signal Right Front Rationality. C0513 - Wheel Speed Signal Right Rear Rationality. DTC P1DD2 - Torque Request Signal From TCM Denied will be present, set by the TCM and the vehicle will be in limp home mode(Sales Codes DF5 and DF7 - Automatic Transmission Vehicles Only). DTC U1428 - Inaccurate Engine Torque Received(Sales Codes DF5 and DF7 Only). Customers may also comment on one of the following:Vehicle will intermittently not start(South Korea Only). The vehicle is in limp home mode (shift RPMs are limited) with no DTCs set(Sales Code DE1 - Manual Transmission Vehicles Only).
21-039-192019-12-02. Service bulletin. POWER TRAIN. Flash: Dual Dry Clutch Transmission (DDCT) Updates - AN-M4-18-20191014 Refer to China Joint Venture (JV) released document AN-M4-18-20191014, for details on this service action.
18-080-192019-12-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience excessive oil consumption between oil change intervals.
18-072-192019-12-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates - AN-M4-18-20191010 Refer to China Joint Venture (JV) released document AN-M4-18-20191010, for details on this service action.
18-064-192019-10-28. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P16A2 - ETC Motor Self-Learning (Limp Home Position). P023E - Turbocharger Pressure And Manifold Pressure Plausibility (Signal Rate Of Change Below Threshold).
21-030-192019-07-15. Service bulletin. POWER TRAIN. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set:P0780 - Gear Shift Malfunction. P1DD2 - Torque Request Signal From TCM Denied. Customers may also experience one or more of the following:A bump feeling and high engine RPMs. The vehicle going into limp home mode.
21-024-192019-07-15. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Transmission Control Module (TCM) Update This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Customers may experience the following: Malfunction Indicator Lamp (MIL) illumination, Electronic Vehicle Information Center (EVIC) message states ?Service Transmission? and transmission intermittently goes into neutral with PRNDL flashing when vehicle is stopped. The vehicle may or may not resume normal transmission operation after cycling the shifter or ignition. Customer may notice poor shift quality before engine/trans has reached normal operating temperature.
18-082-172017-11-03. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Vehicle was built with incorrect Powertrain Control Module Calibration.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.