The "computer" in your car doesn't have a screen, keyboard or disk drives. But it does have a lot of connections.
Your car's on-board computer doesn't look anything like the kind that's used on a desktop. The "computer" is a small box called an ECU (Electronic Control Unit), often mounted under the seats or in the kick panel. The ECU controls all the essentials of engine operation: spark timing, fuel delivery, emissions, and in some cases even the air conditioning or the automatic transmission. Keeping all these systems in tip-top shape is no simple job; it requires complex test equipment and advanced diagnostic skills.
Some Transmission Warning Signs
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.
"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.
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