Question: how do you know when your transmission needs to be serviced?
Answer: 1) Your Transmission is Slipping. ... 
2) Your Transmission is Leaking Fluid. ... 
3) Your Transmission Emits an Unusual Odor. ... 
4) Your Transmission Causes Rough Idling. ... 
5) Your Transmission Shifts Poorly. ... 
6) Your Vehicle Accelerates Poorly. ... 
7) Your Check Engine or Transmission Warning Light is On.