Service bulletin 21-027-19

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	10162555
Published by NHTSA	2019-07-15
Manufacturer's number	21-027-19
Manufacturer's date	2019-05-11
NHTSA component	POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the 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.

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, Automatic transmission, Transmission control module

Vehicles listed
JEEP RENEGADE	2018

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
1804421	2022-10-17. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) have been set: P1D7F-00 - ETC Self-Learning Failure.(North America only). P0456-00 - EVAP Purge System Small Leak.(North America only). P0441-00 - EVAP Purge System Performance.(North America only). P0440-00 - General EVAP System Failure. (North America only). P0455-00 - EVAP Purge System Large Leak.(North America only). P1CEA-00 - Boost Side EVAP Purge System Performance.(North America only). In addition, the following software enhancement is available: After a short trip and shutting the engine off for 5-10 minutes, vehicle exhibits a long crank/start condition(EMEA only). Updated EVAP system diagnostics.(North America only).
1805420	2022-09-26. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest 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:P0456 - EVAP System Small Leak. P0340 - Camshaft Position Sensor Circuit - Bank 1 Sensor 1. P0016 - Crankshaft/Camshaft Timing Misalignment - Bank 1 Sensor 1. P0606 - Control Module Processor. Customers may also experience the following:Vehicle periodically may fail to start(ED6 engine only).
S2008000020	2020-05-26. Service bulletin. No Start, No Crank After PCM And RFHUB Replaced, DTC P0513 Invalid Skim Key Sets In The PCM
18-030-20	2020-04-27. Service bulletin. Flash: Powertrain Diagnostic and System Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software.
08-043-20	2020-04-27. Service bulletin. Flash: Comfort Seat and Wheel Module (CSWM) Enhancements This bulletin involves updating the CSWM with the latest available software. The customer may describe the following:The heated steering wheel and heated seats, turn off when Engine Stop Start (ESS) activates.
18-082-19	2019-12-02. Service bulletin. 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.
18-043-19	2019-07-15. Service bulletin. Flash: Powertrain Control Module (PCM) Update This bulletin involves reprogramming the PCM with the latest 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:P0456 - EVAP System Small Leak. P0340 - Camshaft Position Sensor Circuit - Bank 1 Sensor 1. P0016 - Crankshaft/Camshaft Timing Misalignment - Bank 1 Sensor 1. P0606 - Control Module Processor.
18-040-19	2019-07-15. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Some customers may experience the following condition:When pressing the SPORT button on the console, the SPORT mode is not activated. Hard to start condition at low temperatures 10-15°C (50-60°F) and filled with 70~80% ethanol fuel (DF7 Transmission Sales Code only). Engine experiencing a hard re-start after being shut off for short periods of time. Engine Stop/Start (ESS) remains in stop condition and they must manually restart the engine due to either a door or the hood being opened while in ESS mode.