* Automatic Transmission: The transmission fluid fill point is usually on the side of the transmission itself. You'll likely need to access it from underneath the car. It's often a small plug or bolt with a specific size and shape. You should consult your owner's manual for the precise location and procedure. Filling an automatic transmission incorrectly can cause serious damage. It's often recommended to have this service done by a professional.
* Manual Transmission: Manual transmissions on the 2005 Ford Focus typically don't require regular fluid changes unless there's a problem. The fluid is generally considered "lifetime" fluid. Again, consult your owner's manual before attempting any maintenance. If you need to add fluid (which is unusual), you might find a fill plug on the transmission. However, getting the level correct is crucial, and a mechanic is best-suited to this task.
In short: Check your owner's manual for the exact location and proper procedure. Improper filling can damage your transmission, making a repair expensive.
