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Audio System ­ REW Or REX Radio Software Enhancements NUMBER: 08­026­12 GROUP: Electrical Date: 1204172010 Jeep Truck Grand Cherokee 4WD V6­3.7L

Technical Service Bulletin #
08­026­12
Audio System ­ REW Or REX Radio Software Enhancements
NUMBER: 08­026­12
GROUP: Electrical
Date: 1204172010 Jeep Truck Grand Cherokee 4WD V6­3.7L
 

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DATE: April 17, 2012
THIS SERVICE BULLETIN IS ALSO BEING RELEASED AS RAPID RESPONSE
TRANSMITTAL 11­026. ALL APPLICABLE UN­SOLD VIN's HAVE BEEN LOADED. TO
VERIFY THAT THIS SERVICE ACTION IS APPLICABLE TO THE UN­SOLD VEHICLE,
USE VIP OR PERFORM A VIN SEARCH IN TECHCONNECT. APPLICATION OF THIS
SERVICE BULLETIN TO SOLD UNITS IS BASED UPON THE CUSTOMER EXPERIENCING THE SYMPTOM/CONDITIONS. ALL
REPAIRS ARE REIMBURSABLE WITHIN THE PROVISIONS OF WARRANTY.
THE wiTECH SOFTWARE LEVEL MUST BE AT RELEASE 12.02 OR HIGHER TO PERFORM THIS PROCEDURE.
SUBJECT:
Flash: REW Or REX Radio Software Enhancements
OVERVIEW:
This bulletin involves upgrading the software on the , REW, or REX Radio.
MODELS:
2007 ­ 2011 (JK) Wrangler
2007 ­ 2010 (JS) Sebring/Avenger
2007 ­ 2008 (JS) Cirrus
2007 ­ 2011 (KA) Nitro
2008 ­ 2011 (KK) Liberty
2008 ­ 2010 (RT) Town Country/Caravan
2008 ­ 2010 (LE) 300 (Export)
2009 ­ 2011 (MK) Compass/Patriot
2009 ­ 2011 (PM) Caliber
2008 ­ 2010 (WH) Grand Cherokee
2011 (WK) Grand Cherokee
2008 ­ 2010 (XH) Commander (Export)
2008 ­ 2010 (JC) Journey
NOTE:
This bulletin applies to vehicles built with an MW/FM/CD/MP3/NAV Radio ­ EURO (sales code REW) or Media Center 835N
6CD/DVD/HDD/NAV (sales code REX).
SYMPTOM/CONDITION:
The audio from a Bluetooth phone mutes during a traffic announcement but does not restore when the traffic announcement has
completed.
NOTE:
For REW radio with a software version lower then 2.402 it may also have these symptoms.
­ The radio may lock up when a U­Connect call ends, this may cause battery drain.
­ Intermittent no sound from audio system.
­ iPhone4 losing Bluetooth connection intermittently and not displaying accurate caller ID information when using UConnect.
DIAGNOSIS:2010 Jeep Truck Grand Cherokee 4WD V6­3.7L
 

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If the customer experiences the Symptom/Condition(s) perform the following:
1. Check the REW radio software version.
a. Press "Menu" button on the radio.
b. Press "System Setup" touch screen soft key.
c. Press "System Information" touch screen soft key.
d. The software level is the number reported after the word "Application".
e. Is the radio software version at 2.403 or greater?
f. YES >>> This service bulletin does not apply. Further diagnosis may be required.
g. NO >>> Perform the repair procedure Step # 1.
2. Check the REX radio software version.
a. Press the hard "Set up" button on the face of the radio.
b. Select "System information".
c. The software level is the number reported below the word "Application".
d. Is the radio software version at 8.315 or greater?
e. YES ­> This service bulletin does not apply. Further diagnosis may be required.
f. NO ­> Perform the repair procedure Step # 1.
PARTS REQUIRED:
REPAIR PROCEDURE:
NOTE:
If the software update process is interrupted/aborted, the process should be restarted.
1. Start the vehicle and turn the radio ON.
2. Install the software disc into the radio CD drive and follow the instructions on the screen to start the update procedure.
NOTE:
Do not cycle the ignition or adjust the radio (volume, channels, est.) during the update process.
NOTE:
The update may take up to 15 minutes, no other actions are needed until the update is completed.
3. Is the update being performed on an REW Radio?
a. YES >>> Proceed to Step # 4.
b. NO >>> Proceed to Step # 5.
4. Verify that the radio software version is at 2.403 or greater.
a. Press "Menu" button on the radio.
b. Press "System Setup" touch screen soft key.
c. Press "System Information" touch screen soft key.
d. The software level is the number reported after the word "Application".
e. Has the radio been successfully updated to 2.403.
f. Yes >>> The update procedure has been completed, remove the disc.
g. No >>> The process needs to be restarted. Start over at Step # 1.
5. .Is the update being performed on an REX Radio?
a. YES >>> Proceed to Step # 6.
b. NO >>> This bulletin does not apply.
6. Verify that the radio software version is at 8.315 or greater.
a. Press the hard "Set up" button on the face of the radio.
b. Select "System information".
c. The software level is the number reported below the word "Application".
d. Has the radio been successfully updated to 8.315.2010 Jeep Truck Grand Cherokee 4WD V6­3.7L
 

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e. Yes >>> The update procedure has been completed, remove the disc.
f. No >>> The process needs to be restarted. Start over at Step # 1.
NOTE:
If the radio will not successfully update after repeat attempts, you may have a damaged disc. Order a new disc and start the
procedure over.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.