In case the battery is removed, a number of systems will have to be re-learned before they can run to perfection. Start with unplugging the cable of the negative terminal of the battery. Then take off the clutch pedal assembly. To US models, remove the clutch pedal switch, push in the sides of the three retainers connecting the master cylinder with the brake pedal assembly, and remove the mounting pin, and then pull the master cylinder assembly out of the brake pedal assembly. In the case of Jetta models, you should disconnect the clip tabs to each side of the peddle that hold the clutch master cylinder push rod to the peddle, and a spacer of about 1-1/2 inches (40 mm) long should be inserted between the clutch peddle and the stop of the peddle. Disconnect the clutch master cylinder to the clutch pedal assembly, counterclockwise rotate the clutch master cylinder and take it out of the pedal bracket. To install into Golf models, remove and reverse the installation order and install a new part instead of the mounting pin. In Jetta, delete the spacer, and install the clutch master cylinder in the pedal bracket followed by installing the clip on the end of the pushrod. Install the spacer again between the clutch pedal and the clutch pedal stop, insert the master cylinder into the clutch pedal bracket and twist it clockwise and fix it in place. Lastly, press the master cylinder push rod into the pedal until the clip on the end of the pushrod snaps into place in the pedal. To fit all models, fit up the clutch pedal assembly, tighten up all fasteners to the required torque values, bleed the clutch hydraulic system, and check the brake fluid level in the reservoir, adding as required to reach the required level.