I had and have the same issue.......
My problem is the air suspension system. When the spyder first went for repair they couldn't find a problem. On the second trip in they found a pin hole leak in the bladder. It was replaced but the air loss problem still persists. It has been an on going problem since the spyder was new and now BRP is telling my dealer it's out of their hands because the warrantee is up. Someone else here on this site solved their problem buy installing a cut out switch on the purge valve under the seat. They installed a small switch in the ground line that would interrupt the function of the system and stop the air from being released. This would work if your problem is behind the purge valve i.e. compressor or ride height sensor. As far as being a known issue, yep it's a known issue. Good luck.
2012 and 2014 RT Pump issues
I purchased my first 2012 RT with 12,000 miles on it last year. I put another 13,000 on it. I didn't know how the compressor system worked. Turned out it was bad when I bought it. After continually filling the air bag manually I finally discovered that the fill valve was loose. Still kept leaking. I thought that perhaps that made the pump burn out because of the leak. So I decided to replace the compressor and air bag with a used ones. Much cheaper. $120 vs $350 just for the pump.
After getting it apart I found that the motor ran fine but the crank shaft set screw had come loose and the cranks shaft and piston were just lying in the housing. I replaced it anyway with the 'new' 'used' one. The air bag was fine but replaced it also. Now I have an extra set to sell or for back up.
Feb. 2018 I acquired a 2014 RT with 9500 miles on it from a guy in Connecticut and had it shipped to Colorado. It had an extended warranty till April 2018. Very grateful for that!!!
Pump seemed seemed to work okay.. at first. After riding a while, I tried to adjust the suspension and I got the manual warning on the dash. I tried it several times and sometimes worked sometimes not. Into shop it went.
They found that the brass check valve in the air line had a crack in it. Factory over tightened it and didn't do a pressure test. Pump was overheating trying to keep up and then would shut off. Would cool down and then worked till overheated... etc. It certainly had a lot of extra wear on it and may or may not have worked so dealer replaced it under the extended warranty.
Second issue: Handle bars had play in them. Dealer found out that the lower steering column u joint had 8 mm of play in them. Spec was 2 mm. Again, this had to have come from the factory that way. They replaced that under the Extended Warranty also.. again so glad it has it.
All this should have been covered even with out the Extension but... time for original factory warranty was out so I seriously doubt that BRP would have taken care of it.
I have to say their quality control seems to be seriously lacking and would have cost me about $550 in parts and a $1000 in labor for the lack of responsibility.
Even with the problems, I do love the 2012 RT and the 2014 I love even more. Just want to get the BajaRon sway bar and I'm all set.
One question remains???? Do I spend another $600 to extend the warranty again or take a chance??? Any thought about that would be appreciated.
William