Service bulletin 18-079-19

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	10168486
Published by NHTSA	2019-12-02
Manufacturer's number	18-079-19
Manufacturer's date	2019-10-26
NHTSA component	POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM

NHTSA's summary

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.

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

Electrical system, Transmission and driveline, Automatic transmission, Transmission control module

Vehicles listed
JEEP COMPASS	2019

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

Other bulletins for the same vehicles and component
1801923	2024-01-02. Service bulletin. Flash: Powertrain Control Module (PCM) Updates 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: ? P06E9 - Engine Starter Performance (NA Only). ? P0456 - EVAP System Small Leak. NOTE: If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. ? P141B - Starter Control 1 Circuit Performance. ? P141C - Starter Control 2 Circuit Performance. ? P26E4-64 - Starter Control 2 Circuit Signal Plausibility Failure. ? P0615-64 - Starter Control Circuit Signal Plausibility Failure. In addition, the customer may notice one or more of the following conditions: ? A difference in the set cruise control speed and actual speed on the odometer (i.e. driver sets 100 kph (62 mph), vehicle will hit a max of 95 kph (59 mph) and cruise at 95 kph (59 mph)) (Sales Code ED6 Only). ? Long engine cranking prior to vehicle start, more noticeable when the outside temperature is above 40 °c (104 °f) (EE with Sales Code ED6 Only). ? Vehicle will intermittently not start (South Korea Only). ? Poor fuel economy. ? Slight engine pinging noise while accelerating and poor performance. ? The engine oil dipstick may indicate a low oil level, however the low oil pressure warning indicator does not illuminate in the Instrument Panel Cluster (IPC). ? No crank condition while pushing the start button numerous times, if the vehicle is turned off completely and then restarted, it will start normally. ? Cruise control and adaptive cruise control are inoperable. ? A ?Service Speed Limiter? message in the IPC and Active Vehicle Speed Limiter (AVSL) will be inoperable. NOTE: There will be no stored or active DTCs with this IPC message. This bulletin involves reprogramming the PCM with the latest available software.
2500321	2022-09-26. Service bulletin. Flash: Dosing Control Unit (DCU) Updates This bulletin involves reprogramming the Dosing Control Unit (DCU) with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) or symptom/condition.P20F6-00 - Reductant Injection Valve Stuck Open Bank 1 Unit 1. P208E-00 - Reductant Injector Stuck Closed - Bank 1 Unit 1.
18-004-20 REV. A	2020-10-26. Service bulletin. Flash: Powertrain Control Module (PCM) Updates - AN-M4-18-20200824 Refer to China Joint Venture (JV) released document AN-M4-18-20200824, for details on this service action.
11-004-20	2020-09-28. Service bulletin. Diesel Particulate Matter Sensor - Associated to DTCs - P24D1 and P24AE This bulletin involves replacing the diesel particulate sensor when one or more of the following Diagnostic Trouble Codes (DTCs) are active in the Powertrain Control Module (PCM). Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs. P24D1-00 - Particulate Matter Sensor Regeneration Incomplete. P24AE-00 - Particulate Matter Sensor Circuit.
18-046-20	2020-06-22. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience one or more of the following conditions: Reduced battery life. Intermittent Engine Stop/Start (ESS) operation.
18-035-19 REV A	2019-07-15. 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 Diagnostic Trouble Codes (DTCs) have been set:P141B - Starter Control 1 Circuit Performance. P141C - Starter Control 2 Circuit Performance. P26E4-64 - Starter Control 2 Circuit-Signal Plausibility Failure. P0615-64 - Starter Control Circuit-Signal Plausibility Failure. In addition, the customer may notice the following condition:No crank condition while pushing the start button numerous times, if they turn the vehicle off completely and then retry it will start normally. The vehicle may have a low oil level indicated by the engine oil dipstick, however the low oil level warning indicator does not appear in the cluster. A ?Service Speed Limiter? message in the Instrument Panel Cluster (IPC) and Active Vehicle Speed Limiter (AVSL) will be inoperable.There will be no stored or active DTCs with this IPC message. Cruise control and adaptive cruise control are inoperable.