I need some help. Got a 2006 magnum with a 3.5. My tranny would sometimes shift fine but other times it would not go into overdrive or won't shift back down. If I was to put it in paddle shift mode I can shift it thru the gears. The check engine light came on yesterday. Any help would be great.

 

Do you have a fluid leak?

 

Non that I can see its a sealed system so I do not know but the pan is dry

 

Took the car to a shop they ran their scanner and told me that my lead plate that has the input speed sensor built into it was bad, very expensive too.

 

The Lead Frame yep. The valve body has to come out to change it. The Input, Ouput speed sensors, solenoid actuator terminals and the trans temp sensor are all part of that piece. It a Mercedes transmission. NAG-1

 

Yea it's a Mercedes trans found a lead plate for $211 online from dealership in nc. Dealerships around here want $417 for them