Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Controls - ECM Update For Spark Knock/Vibration
2009 Jeep Commander 4WD V8-5.7LSECTION Engine Controls - ECM Update For Spark Knock/Vibration
NUMBER: 18-041-08
GROUP: Vehicle Performance
DATE: December 16, 2008
THE StarSCAN(R) FLASH FILES FOR THIS BULLETIN MUST BE RETRIEVED FROM THE INTERNET.
StarSCAN(R) SOFTWARE LEVEL MUST BE AT RELEASE 9.03 OR HIGHER FOR THIS BULLETIN.
StarMOBILE STANDALONE MODE OR StarMOBILE DESKTOP CLIENT MAY ALSO BE USED TO PERFORM THIS PROCEDURE.
SUBJECT:
FLASH: Spark Knock Improvements And Noise Vibration Harshness (NVH) Improvements
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM).
MODELS:
2009 DS Ram Truck 1500
2009 (WK) Grand Cherokee
2009 (WH) Grand Cherokee (International Markets)
2009 (XK) Commander
2009 (XH) Commander (International Markets)
NOTE:
This bulletin applies to vehicles built with a 5.7L engine (sales code EZD) on WK/WH/XK/XH built before October 28, 2008 (1028XX MDH) or DS vehicles built before October 3, 2008 (1003XX MDH).
SYMPTOM/CONDITION:
Some customers may experience:
^ NVH issues while the vehicle is operating in the MDS mode.
^ Spark Knock between 1800 to 2500 RPM.
DIAGNOSIS:
Using a Scan Tool (StarSCAN(R)) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as designed. If DTC's are present other then the one listed above record them on the repair order and repair as necessary before proceeding further with this bulletin.
If no DTC's are present, perform the Repair Procedure.
PARTS REQUIRED:
SPECIAL TOOLS / EQUIPMENT REQUIRED:
REPAIR PROCEDURE:
1. Reprogram the PCM with the latest software. Follow the detailed service procedures available in DealerCONNECT/TECHCONNECT, Refer To 8 - Electrical/Electronic Control Modules/Powertrain Control Module - Standard Procedure PCM/ECM Programming - Gas.
2. Type the necessary information on the "Authorized Modification Label" p/n 04275086AB and attach it near the VECI label.
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.
GROUP: Vehicle Performance
DATE: December 16, 2008
THE StarSCAN(R) FLASH FILES FOR THIS BULLETIN MUST BE RETRIEVED FROM THE INTERNET.
StarSCAN(R) SOFTWARE LEVEL MUST BE AT RELEASE 9.03 OR HIGHER FOR THIS BULLETIN.
StarMOBILE STANDALONE MODE OR StarMOBILE DESKTOP CLIENT MAY ALSO BE USED TO PERFORM THIS PROCEDURE.
SUBJECT:
FLASH: Spark Knock Improvements And Noise Vibration Harshness (NVH) Improvements
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM).
MODELS:
2009 DS Ram Truck 1500
2009 (WK) Grand Cherokee
2009 (WH) Grand Cherokee (International Markets)
2009 (XK) Commander
2009 (XH) Commander (International Markets)
NOTE:
This bulletin applies to vehicles built with a 5.7L engine (sales code EZD) on WK/WH/XK/XH built before October 28, 2008 (1028XX MDH) or DS vehicles built before October 3, 2008 (1003XX MDH).
SYMPTOM/CONDITION:
Some customers may experience:
^ NVH issues while the vehicle is operating in the MDS mode.
^ Spark Knock between 1800 to 2500 RPM.
DIAGNOSIS:
Using a Scan Tool (StarSCAN(R)) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as designed. If DTC's are present other then the one listed above record them on the repair order and repair as necessary before proceeding further with this bulletin.
If no DTC's are present, perform the Repair Procedure.
PARTS REQUIRED:
SPECIAL TOOLS / EQUIPMENT REQUIRED:
REPAIR PROCEDURE:
1. Reprogram the PCM with the latest software. Follow the detailed service procedures available in DealerCONNECT/TECHCONNECT, Refer To 8 - Electrical/Electronic Control Modules/Powertrain Control Module - Standard Procedure PCM/ECM Programming - Gas.
2. Type the necessary information on the "Authorized Modification Label" p/n 04275086AB and attach it near the VECI label.
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.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.