Watch for these warning signs that tell you your vehicle may need Transmission service:
"Check Engine" or "Service Engine" light
O/D Light On or Flashes
Winding Sound
Hard Shifts
Slipping
Load Noises
Neutralizes
Lack of Power
Fluid is Discolored
The old-fashioned diagnistics used to be done "by ear," but this isn't possible with computer-controlled transmissions. There are many sensors in your car. A complete diagnostic check, followed by a professional service, should be performed at recommended intervals or when ever your car shows any of the above warning signs.
To illustrate the complexity and importance of computers, consider that a Lexus LS 400 has 14 on-board computers. There are 8 computers on-board in the average new car. In fact, a new car today has more computer power than the "Eagle" that landed on the moon 28 years ago.
