These vehicles take a special mercedes benz rear wiper blade so since you have to go to the dealer to get the part, ask them for the procedure too.
The 2001 Mercedes-Benz ML320 wiper blade sizes are 22" wiper blades on both sides front and a 17" rear wiper. See sources and related links below for more information. Since there are over 22 different wiper arm attachments, do not buy wipers just by length only - be sure to lookup exact wiper blade part numbers by vehicle make, model and year for the brand wiper you decide to purchase. This ensures correct length AND correct attachment.
Take it to autozone, they change it for free. If not you turn the wiper so its perpendicular to the wiper arm and push down.
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You can change the wiper blades by removing the retaining clip to the wiper blade arm. The wiper blade will come off and can be replaced.
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The way to change a rear wiper blade on a kai sedona would be to take the vehicle to an auto mechanic or an auto body shop and let them change the wiper blades on the vehicle.
To change the wiper blade on a Peugeot 306 unclip the old part from the mount. Take the new wiper blade and slide it into place until it clicks.
Remove the wiper arm from the wiper motor. Remove the wiring harness from the wiper motor. Remove the wiper motor retaining bolts. Reverse the process to install the new wiper motor.
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