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Service bulletin W84

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)
TypeService bulletin
NHTSA id10220584
Published by NHTSA2022-09-26
Manufacturer's numberW84
Manufacturer's date2021-02-04
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE

NHTSA's summary

Customer Satisfaction Notification W84 Powertrain Software Update

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
CHRYSLER 2002017
JEEP CHEROKEE2014
JEEP CHEROKEE2016, 2017
JEEP COMPASS2017
JEEP RENEGADE2016, 2017

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

Recalls for the same vehicles and component
23V3020002023-04-27. POWER TRAIN:AUTOMATIC TRANSMISSION
20V3430002020-06-11. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT; POWER TRAIN:AUTOMATIC TRANSMISSION
19V4470002019-06-13. POWER TRAIN:AUTOMATIC TRANSMISSION
16V5290002016-07-12. POWER TRAIN:AUTOMATIC TRANSMISSION

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
S23250000072024-01-08. Service bulletin. MIL/check engine lamp comes on after performing U90 recall PCM software update.
S23250000072023-10-30. Service bulletin. MIL/check engine lamp comes on after performing U90 recall PCM software update.
1806014-12023-02-21. Service bulletin. Diagnostic And System Improvements
21018142023-01-17. Service bulletin. Transmission Shift and Diagnostic Enhancements
V512022-12-19. Service bulletin. Customer Satisfaction Notification V51 Reprogram Powertrain Control Module
18090172022-10-31. Service bulletin. Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with thelatest available software. Customers may experience a ticking noise coming from the top of the engine area. The ticking noise is heard particularly at idle.
90037832022-10-31. Service bulletin. Shifter - Automatic Transmission If a 2015 - 18MY KL ONLY is brought in with a ?Service Shifter? message on the cluster and/or the following DTCs are present indicating loss of communication with the shifter: U0103, U0103-87. Prior to beginning any repair, please call John Zbranchik at 248-576-0756 or Pablo Flores at 248-576-3972. If no reply contact Dil Weerasinha at 248-944-5967 or Jay Nagle 248-576-5657. If you are unable to contact any of the above, and all the DTCs related to loss of comm are STORED, first perform a vehicle scan with a wiTECH tool or similar and email the log to john.zbranchik@fcagroup.com and pablo.flores1@fcagroup.com. Ensure all stored DTCs in the vehicle are recorded in the log. Use the tool to clear all codes and ensure the ?Service Shifter? message does not return. If this is the first occurrence of this issue on this vehicle, do NOT replace the shifter at this time. If any DTCs related to loss of comm with the shifter are ACTIVE, a full bus log is highly desired. Please contact a regional tech representative to acquire this log. After the log is acquired, or if this is not feasible, check for loose/bent pins, spread terminals on both the male pin cavity in the shifter and the female connector from the body harness take out and all grounds. If no issues are found, replace the shifter and return it to the Quality Engineering Center (QEC).
21016162022-10-24. Service bulletin. Transmission Diagnostic And Shift Enhancements
90037602022-10-17. Service bulletin. Shifter - Automatic Transmission Before this part is replaced for a "service shifter" message please call John Grzecki on cell (248) 379-0969 with all associated DTCs. If you do not receive a return call within 15 minutes, proceed with the repair. Please be sure to accurately record any DTCs identified with the scan tool and document them on the repair order and in GCS claims.
90037532022-10-17. 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.