Steering wheel vibration

2007 SR5 has recently been having a mild vibration when turning. I filled the power steering fluid to factory specs, but still happening. Any clues?

 

Do a tire rotation and wheel balance. Most shimmy felt in the wheel is wheel balance related. Start there.

 

Thank you for your response, but this vibration only occurs when I'm turning at slow speeds. I was concerned something was wrong with the power steering or traction control/ABS. If this has happened to anyone before please let me know what to look for.

 

You get new tires recently? I can feel the tread of my Toyota AT3's on slow turns.

 

No, I don't believe it is a tire issue. It is a very mild vibration only when turning. I will go through my steering and suspension, but I think this may be from ABS