Coolant leaks coming from the underbody on vehicles equipped with rear heat/AC are common. The underbody hoses should be inspected as part of regular maintenance. If you drive on roads where salt is prevalent the problem is generally more severe. Some 2005 models are involved in a special service action, no government recall was issued.
Car Problem Reports
Chrysler Town & Country Underbody Coolant Leaks From Rear Heat/AC Are Common
Chrysler Town & Country Problem
Average Mileage: 99,714 mi (53,000 mi - 170,000 mi)
Metallic Coolant hoses are made of cheap white metal, that rapidly corrodes. Fix, replace all metal hoses before you wind up broken down on the road.
Visitor, 2000 Chrysler Town & Country, 170,000 mi
A/C was working for a week or two then would lose coldness. Noticed antifreeze on ground on driveway. finally figured out that connection between metal tube and rubber hose was bad due to corrosion from road salt.
Visitor, 2006 Chrysler Town & Country, 53,000 mi
Bought car in Feb.2011 and in June A/C stopped working. Called Chrysler and they told me this wasn't a problem, however that was not true. Now because it has corrosion in the compressor my warranty won't cover the repair costs. Cost to repair is a whooping $1200. I do live in the Midwest where we have snow and they salt the roads, but really were they not expecting anyone who gets snow to buy their vehicles! This should be a recall!!!
Visitor, 2005 Chrysler Town & Country, 117,000 mi
Noticed coolant drops in snow after running vehicle in driveway to warm up. Bad hose / hose clamps. small leak.