Automatic Transmission Gear Indicator problems of the 2011 Volkswagen Jetta

I have a 2011 Jetta se 2. 5l auto pzev and when I turned on the car outside from my house, the check engine light turned on with no reason. I passed the scanner and threw the code p0106. The car would drive well, but when I release the brake and press gas, the car wouldn't react right away, it would accelerate slowly and kick-in I second gear. Then the gears indicator (prnd123) disappears. I changed the map sensor and works good for 3 or 4 day. After this the problem returns. I saw a technical bulletin from Volkswagen company and this bulletin says that the car needs an update programming. I called to my concessionary and they says that I must to pay, first for the diagnosis, and second for this update. I have been investigating about this trouble and too many owners of Volkswagen vehicles presents this fault, including USA and mexico. I guess that Volkswagen must correct this problem with no charge. Attached the technical bulletin 2034012 from Volkswagen.