3
questions

its takes about 2-4 seconds it makes a sound like its struggling to turn on..

Batteries are good.

When I start the car the only button that show signs of life is Aux which you can only press one time (right after starting up car, On position wont work). The hazards are flashings and the doors lock-unlock once (I guess this is the programming mode).

The receiver behind my rear view mirror doesn't flash anymore (Usually Pulse Blue Light).
By the way I noticed that my horn would honk by itself sometimes while driving.

I'm not sure about the name of the system (Installed at the dealership in 2006 Quebec,Canada), But on the sticker you can read "P5U Rev 1.14A".

Fuse (15) is good.

Thanks for you help!

Every morning when I first put the car in reverse it starts vibrating very loud, usually when I hit the brakes. It also vibrates when I push on the gas in drive...