Optima V6-2.7L (2003)
Technical Service Bulletin # 3EN012
Date: 030501
Charging System - High Temperature Battery Discharge
VOLUME
3
GROUP
Engine
NUMBER
012
MODEL
Optima
DATE
May, 2003
SUBJECT
Optima Charging System - V-6 Engine
This bulletin provides information related to charging system changes in 2003MY Optima models with V-6 engine to improve alternator output in high
ambient temperature severe operating conditions.
Some 2001-2003MY Optima V-6 models built before 6/3/03 may experience battery discharge when operated in high ambient temperatures for extended
periods of time at low speeds or at idle with A/C, headlamps and other accessories on. Typically this results in customers reporting an inability to restart
vehicle. To reduce incidence of battery discharge complaints, the following changes were made:
^
Battery heat cover added - 12/20/02 production
^
ECM software revised - 11/20/02 production
^
Alternator pulley diameter reduced to 58 mm - 6/3/03 production
For 2001-2003 Optima V-6 complaint vehicles produced before 6/3/03, the revised parts and ECM logic software has been made available for use as a
field fix.
BATTERY TEST
