* Automatic Transmission: The transmission fluid dipstick is usually located on the passenger side of the engine bay, near the transmission. It's often a long, thin dipstick with markings for checking fluid level. The fill location is typically the same as the dipstick.
* Manual Transmission: Manual transmissions on the 2003 Ford Focus generally do not have a dipstick. They are typically filled through a specific fill plug on the transmission case itself. You'll need a shop manual or a reliable online resource (like a forum dedicated to Ford Focuses) with diagrams to locate this fill plug. Adding fluid to a manual transmission is generally only done by a mechanic because it requires knowing the correct amount and method. Overfilling can cause serious damage.
Important Note: Before attempting any fluid checks or additions, consult your owner's manual. It will have the precise location and instructions specific to your vehicle's transmission type. Improperly adding transmission fluid can damage your transmission. If you're not comfortable performing this task yourself, take your vehicle to a qualified mechanic.
