We purchased a 10 year permit for our Terry 5th wheel in 2008. After our 2nd trip to Mexico in 2009 we sold the trailer and kept the uncancelled permit and hologram which was on the windshield of our truck. On our 3rd trip in 2010 we took the permit paperwork and hologram with us to see if we could cancel it at the border on our way out of Mexico. (The new trailer is in my wife’s name so no issues there.) We “lost” the paperwork and hologram.
I began the quest to cancel the permit April 2nd 2011 with an e-mail to the banjercito asking how to proceed. After a couple of e-mails back and forth they did send me a pdf of the permit. I then e-mailed Aduana with my request. I was required to send several documents to prove the trailer was in Canada by regular mail in late April. In late July I received a registered letter from Aduana asking for a report from our police, above the local level. Fortunately the local RCMP were willing to help. I sent a registered letter to Mexico in late November and finally received the cancellation of the permit April 19th 2012. A long slow process but finally done.
This year we cancelled both the truck permit and the trailer 10 year permit when we left Mexico even though we are planning on returning with the same set up for 2013. Our refund this year for the truck took only 1 day. We are looking forward to next season already.
We never leave anything hanging when we leave. Things can change quickly and dump you into a problem as you describe. The amont of money involved can't begin to pay for the hassle that may result ! RYV
We'll use ours one more time, making our cost for 6 Mexican RV winters the original cost only for the 10-year decal which was $55 or about $9 per year. For six trips in, each repeating the hassel of the process, it will cost about $330 provided the price of the ten yer permit has remained static.
As slowlyiturn has layed out in his post though, there is something to be said for turnng it in - as we plan to do ourselves next year.