# Service bulletin 21\-001\-14

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.

- Type: Service bulletin
- NHTSA id: 10136946
- Published by NHTSA: 2018\-05\-21
- Manufacturer's number: 21\-001\-14
- Manufacturer's date: 2014\-02\-06
- NHTSA component: POWER TRAIN; ELECTRICAL SYSTEM

## NHTSA's summary

Flash: ELSD Module Enhancements This bulletin involves selectively erasing and reprogramming the Electronic Limited Slip Differential \(ELSD\) with new software. If any of the following DTC?s are either Active or Stored in the ELSD module?s memory, the ELSD motor will need to be replaced as well. C1490\-00\-REAR DIFFERENTIAL ACTUATOR INITIALIZATION FAILURE C148F\-1D\-REAR DIFFERENTIAL MEASURED MOTOR \- CIRCUIT OUT OF RANGE C1489\-96\-REAR DIFFERENTIAL MOTOR BRAKE \- COMPONENT INTERNAL FAILURE The customer may indicate that their 4X4 lamp may be flashing \(indicating a malfunction of the 4X4 system\).In addition, one or more of the following Diagnostic Trouble Codes \(DTC\) are Active or Stored in the ELSD control module?s memory. C1490\-00\-REAR DIFFERENTIAL ACTUATOR INITIALIZATION FAILURE C148F\-1D\-REAR DIFFERENTIAL MEASURED MOTOR \- CIRCUIT OUT OF RANGE C1489\-96\-REAR DIFFERENTIAL MOTOR BRAKE \- COMPONENT INTERNAL FAILURE

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10136946-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10136946-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Transmission and driveline

## Trouble codes named

C1489, C148F, C1490

## Vehicles listed

- 2011 to 2013 JEEP GRAND CHEROKEE

## Recalls for the same vehicles and component

- [19V813000](/recalls/nhtsa/19V813000.md), 2019-11-14: ELECTRICAL SYSTEM
- [2017341](/recalls/tc/2017341.md), 2017-07-10: Electrical
- [17V435000](/recalls/nhtsa/17V435000.md), 2017-07-10: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
- [15V879000](/recalls/nhtsa/15V879000.md), 2015-12-28: INTERIOR LIGHTING; ELECTRICAL SYSTEM:WIRING
- [2015615](/recalls/tc/2015615.md), 2015-12-22: Electrical
- [15V115000](/recalls/nhtsa/15V115000.md), 2015-02-27: ELECTRICAL SYSTEM
- [2014446](/recalls/tc/2014446.md), 2014-10-09: Electrical
- [14V634000](/recalls/nhtsa/14V634000.md), 2014-10-08: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
- [2014386](/recalls/tc/2014386.md), 2014-09-09: Electrical
- [14V530000](/recalls/nhtsa/14V530000.md), 2014-09-04: ELECTRICAL SYSTEM

## Other bulletins for the same vehicles and component

- [S1623000028 REV.I](/bulletins/11033308.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [101232](/bulletins/11010205.md), 2024-11-07, Service bulletin: POWER TRAIN. Plate \- Planetary
- [9100226](/bulletins/10248509.md), 2024-01-08, Service bulletin: ELECTRICAL SYSTEM. Connector kit Before ordering this connector repair kit 68018957A$, check it in the Mopar Connector Repair Kit Website to confirm part number and applicability. There is an error with the wiring diagrams in Service Library that is causing the incorrect repair kit part number to populate. Please use the Mopar Connector Repair Kit Website until this issue is resolved.
- [9100226](/bulletins/10244348.md), 2023-10-30, Service bulletin: ELECTRICAL SYSTEM:WIRING. Connector kit Before ordering this connector repair kit 68018957A$, check it in the Mopar Connector Repair Kit Website to confirm part number and applicability. There is an error with the wiring diagrams in Service Library that is causing the incorrect repair kit part number to populate. Please use the Mopar Connector Repair Kit Website until this issue is resolved.
- [0811214](/bulletins/10229987.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. Hands Free Feature Inoperative
- [2103314](/bulletins/10229966.md), 2023-01-17, Service bulletin: POWER TRAIN. MIL Illumination For P0730 And Transmission Shift Enhancements
- [9003081](/bulletins/10229871.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM. Dielectric Grease This product is no longer approved for use on ignition coil and spark plug boots. Current plug boot material\(silicone\) is not compatible with this grease and can cause deterioration over time.
- [2400214](/bulletins/10229866.md), 2023-01-17, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:INTERIOR LAMPS/BULBS. Setting Mode Is Selected And Headlamps Always Stay On
- [2101414](/bulletins/10229859.md), 2023-01-17, Service bulletin: POWER TRAIN. Transmission Shift Enhancements
- [2101014](/bulletins/10229855.md), 2023-01-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. Transmission Torque Management Enhancements While in Reverse

JSON: [/v1/bulletins/10136946](/v1/bulletins/10136946)

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