Last coupe of days my rdx steering wheel has become stiff turning. Around 40mph the steering wheel gets very Stiff. Has this happened to anyone.

 

Should be normal with electric power steering. They tend to tighten at higher speeds. What drive mode do you use, sport, comfort etc. check the fluid. Has it been really cold last few days. Or did you whack a pothole etc

 

comfort

 

What fluid? It's an electrical system with torque sensors and drive actuators. No hydraulic fluid.

Most of these new PS systems provide less assist at higher speeds and more assist at lower speeds. That's to give you a better sense of road feel and feedback. There's also less assist in Sport and Sport +. But it's still basically a drive-by-wire system. I don't think there's a direct mechanical connection.

If you've noticed a significant change over a matter of days, there may be something wrong. Take it in and have it checked.