Jeep TSB #P73
2009 Jeep Grand Cherokee
Affected Component: AIR BAGS
- Summary
- Customer Satisfaction Notification P73 Reprogram Final Drive Control Module The Final Drive Control Module (FDCM) software on about 295,600 of the above vehicles may cause the ?Service 4WD? light to come on and an inability to switch 4WD mode when trying to shift out of the current selected mode. The Final Drive Control Module (FDCM) must be reprogrammed with new software.