"Definition of warranty
: a usually written guarantee of the integrity of a product and of the maker's responsibility for the repair or replacement of defective parts"
Source: Merriam-Webster dictionary.
The RV is a 2006 model year. It is 13 years old. By any reasonable expectation a warranty - even an extended one - is no longer applicable. Anything that breaks at this point is simply worn out, it is not defective as produced by the manufacturer.
What the OP should probably look for is some sort of service, repair, and maintenance contract - although I do not know if such a thing exists for RV's.
-Eric