I have a 2007 acura mdx and yesterday on the freeway it gave me a transmission warning and the D for drive was blinking. It will shift 1st-3rd just fine but will not go above 3rd even if i try with the sport shifter... where do i start???

 

Check your fluid level

 

thats good, first thing i checked.

 

Check with your dealer? There aren't enough things you can check to diagnose a possible electronic issue..

 

Transmission range sensor video: