Aspen 2WD V8-5.7L (2007)
Engine Control Module: All Technical Service Bulletins
Engine Controls - MDS Driveability Improvements
NUMBER: 18-006-10 REV. C
GROUP: Vehicle Performance
DATE: Approval Pending
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 18-006-10 REV. B, DATED MAY 26, 2010, WHICH SHOULD BE REMOVED FROM
YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE THE ADDITIONAL 2008 MODELS.
HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN ECU IS AVAILABLE BY SELECTING "HELP" THEN "HELP
CONTENTS" AT THE TOP OF THE wiTECH DIAGNOSTIC APPLICATION WINDOW.
THE wiTECH SOFTWARE LEVEL MUST BE AT RELEASE 11.01 OR HIGHER TO PERFORM THIS PROCEDURE.
StarMOBILE DESKTOP CLIENT MAY ALSO BE USED TO PERFORM THIS PROCEDURE.
SUBJECT:
Flash: MDS Driveability Improvements
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2007 - 2008
(DR)
Ram Truck
2007 - 2008
(HB)
Durango
2007 - 2008
(HG)
Aspen
**2008
(LX)
300 / Magnum / Charger**
**2008
(LE)
300C/300 Touring (International Markets)**
2007 - 2008
(WH)
Grand Cherokee (International Markets)
2007 - 2008
(WK)
Grand Cherokee
2007 - 2008
(XH)
Commander (International Markets)
2007 - 2008
(XK)
Commander
NOTE:
This bulletin applies to models equipped with a 5.7L engine (Sales code EZB).
SYMPTOM/CONDITION:
The customers may experience that the vehicle has a harsh engagement or has a buck/jerking feeling at low speeds of around 12 mph (19 kmh) to 15mph
(24 kmh). The customer may also experience a harsh engagement or buck/jerking feeling during highway cruise control operation from 65 mph (105
kmh) to 75 mph (121 kmh). These conditions are caused by excessive MDS transitions.
The MDS low speed engagement point has been changed to 21 mph (34 kmh). In addition to the MDS low speed engagement change, enhancements
from V8 to V4 and V4 to V8 in all ambient temperatures and operating ranges have been made to make all the transition less noticeable to the customer.
DIAGNOSIS:
Using a Scan Tool (wiTECH(TM) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as
designed. If DTC's are present record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the above condition is present, perform the Repair Procedure.
