Service bulletin 21-039-19

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10168493
Published by NHTSA	2019-12-02
Manufacturer's number	21-039-19
Manufacturer's date	2019-10-29
NHTSA component	POWER TRAIN

NHTSA's summary

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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
JEEP COMPASS	2017, 2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2018422	2018-08-09. Powertrain
2017251	2017-05-10. Powertrain
17V301000	2017-05-09. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
9100776	2026-03-13. Service bulletin. Before replacing the RDM, please be aware that NVH from differential gears is typical and within the acceptable limits. Do not replace RDM for NVH issue.
21-040-25	2025-10-08. Service bulletin. 948TE Transmission Reaction Shaft Service Bushing Kit Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● P1DB7-00 - Torque Converter Clutch Performance.
W84	2023-01-17. Service bulletin. Customer Satisfaction Notification W84 Powertrain Software Update
S2021000004	2023-01-09. Service bulletin. Valve Body Learn Procedure On WiTech Shows The Transmission Is Not In The Proper Gear After Repairs
1808222	2022-12-19. Service bulletin. 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:Long engine cranking prior to vehicle start more noticeable when the outside temperature is above 40°c (104°f)(EMEA with Sales Code ED6 only). 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).
2104517	2022-10-31. Service bulletin. Flash: Transmission Diagnostic and Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Customers may experience the following:Immediate Autostart after Autostop (without releasing the brake pedal).
W20	2022-10-24. Service bulletin. Powertrain Control Module.
S1908000102	2022-10-17. Service bulletin. (Rev. A) Power Inverter Load Ratings
1809820	2022-10-17. Service bulletin. 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.
9003753	2022-10-17. Service bulletin. Powertrain Control Module Customer may experience a MIL-on condition with a P0607 - ECU INTERNAL PERFORMANCE fault in the Powertrain Control Module (PCM). This fault may occur due to a software anomaly and a combination of actions taken by the driver. DO NOT REPLACE THE PCM AT THIS TIME. Please erase the fault and return the vehicle to the customer. A resolution for this condition is under development.