The method of doing this is to keep the windshield wet in the course of the process for the purpose of avoiding harm to the windshield or extreme bending of the wipers. Start by activate the switch for the windshield wiper, give the wiper blades an assortment of few cycles by turning the switch on and off this places the wiper arm in the resting position in parallel to the base of the windscreen. Third, you should move the wiper arm out of the windshield, pull the latch besides the wiper spindle, and then retract the wiper arm downwards leaving it a certain distance from the glass. Take the wiper arm by its base to get an easy grip, exert a slight and then twist it off. For installation, where the arm is located back at the post in the parked position make sure it is not too low to crash the lower part of the windshield during operation and ensure the latch fits rightly in the groove of wiper spindle. The parked position is to be used for the rear wiper as well. On the models up to 1997, to remove the wiper arm, you need to pull it upwards in the service position and then 'pop' it off the motor spindle. For the models of 1998 and the following years, pull the regulating cover to unscrew the mounting nut and then the arm. Installation happens in reverse order to guarantee the arm sits right on the motor spindle.