Most people simply leave the overdrive function "on" all the time. However, you may want to dis-engage it if operating under rough terrain conditions or in rough weather (ice & snow) conditions, or when pulling or towing something. Some people leave it dis-engaged if they do a lot of constant driving in the 35 to 45 mph range to keep it from "hunting" back and forth between high gear and overdrive.
The 2003 Honda Insight has front wheel drive.
The 2003 Honda Civic has front wheel drive.
The 2003 Honda Pilot has all wheel drive.
The 2003 Honda Odyssey has front wheel drive.
The 2003 Honda Accord has front wheel drive.
The 2003 Honda CR-V has front wheel drive.
Yes
Drive it. Honda doesn't make plug-in hybrids.
Transmission problem
Yes, they are identical.
You have to replace the whole drive shaft.
No...from 2003 to 2005, the Pilot was strictly four-wheel drive. From 2005 onwards, they offered both a front-wheel drive and four-wheel drive.