The last year that Volkswagen manufactured the Beetle was 2003. The New Beetle premiered in 1998 and replaced the original Beetle. When you need to replace the battery, it is important to properly disconnect and reconnect the cables to avoid possible damage to the electrical system. Buy a replacement battery for your Beetle from a Volkswagen dealer or auto parts store and change the battery yourself.
Park your Beetle and turn off all of the accessories. Turn off the ignition and remove the key.
Open the bonnet. Look for the battery on the passenger side of the engine compartment near the front. Pry the plastic cover off the top of the battery compartment with a flat-bladed screwdriver or other flat tool.
Disconnect the negative cable with a wrench. Repeat the process for the positive cable. Remove the bolt from the bottom of the retaining strap with an extension attached to a socket and ratchet. Lift the retaining strap off of the battery.
Remove the battery from the tray. You may need to wiggle the battery to get it past the power-steering fluid reservoir. Insert the new battery into the tray.
Attach the retaining strap and tighten the mounting bolt. Connect the positive cable. Tighten it with a wrench. Repeat this for the negative cable. Snap the cover back over the battery compartment. Push firmly and the cover will lock into place. Close the bonnet.