Grand Cherokee 2WD V8-5.7L VIN 2 (2005)
PROM - Programmable Read Only Memory: Customer Interest
Engine Controls - Oil Pressure Lamp Illuminated
NUMBER: 18-033-05
GROUP: Vehicle Performance
DATE: August 18, 2005
THE StarSCAN(R) FLASH FILES FOR THIS BULLETIN ARE AVAILABLE VIA THE INTERNET.
THE FLASH FILE WILL BE AVAILABLE ON THE NEXT StarSCAN(R) UPDATE CD RECEIVED AFTER CD 6.01.
SUBJECT:
Flash: 5.7L Oil Pressure Warning Light May Illuminate
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2005
(WK/WH) Grand Cherokee
NOTE:
This bulletin applies to all WK vehicles equipped with a 5.7L engine (sales code EZB). For WH (Graz built) vehicles equipped with a 5.7L engine
(sales code EZB), this bulletin applies to vehicles built prior to June 17, 2005 (MDH 0617XX).
SYMPTOM/CONDITION:
The following enhancements are included with this software:
^
Correction to engine oil pressure monitor when decelerating.
The vehicle operator may experience a momentary illumination of the instrument cluster oil pressure warning light. The oil pressure warning light
illuminations will occur when the vehicle service brake is applied during a high (rapid) deceleration driving maneuver. When the instrument cluster oil
pressure warning light illuminates, a warning chime will also occur.
DIAGNOSIS:
Using a Scan Tool (StarSCAN(R)) with the appropriate Diagnostic Procedures Manual, verify all engine systems are functioning as designed. If DTCs
are present record them on the repair order and repair as necessary before proceeding further with this bulletin.
If a vehicle is in for service perform the Repair Procedure.
NOTE:
There are two methods to download flash files to StarSCAN(R). The first (preferred) method is to download the flash files to the StarSCAN(R)
from the internet. The second method is to download the flash files from the StarSCAN(R) Software Update CD.
PARTS REQUIRED
