What Is Wrong With My Porsche Rear Shield Wiper?
Most drivers give very little thought to vehicle wipers, until they fail. In order to ensure your safety when driving, you need to keep your windshield clear always. The rear shield needs to be clear as well. In order to keep the rear shield clear your wiper needs to be working properly. Read on to find out probable causes of rear shield wiper failure and what to do about it.
Torn Wiper Blades
The efficiency of your rear shield wiper is highly dependent on the condition of the wiper blades. This is because it is the rubber edge of the wiper blades that comes into contact with the rear shield. If the wiper blades are torn, the contact will not be proper enough to clear moisture and other particles away. In addition to this, torn wiper blades may collect dirt in the gaps where pieces of rubber are missing. This dirt ends up scratching your rear shield glass.
Wet Snow
Your Porsche rear shield wiper is designed to clear away small amounts of snow. Therefore in the case of wet snow, you may need to use a snow brush to clean the rear shield. This is because wet snow is very heavy making it difficult for your rear shield wiper to work properly. The wet snow may bend your wiper blades or make the strip at the pivots. It may also cause damages to the wiper motor. Therefore if you live in an area that experiences heavy snowfall it is important to install winter wiper blades on your Porsche.
Faulty Wiper Motor
The rear shield wiper motor just like any other electrical part of your car is subject to shorting out. When this happens your wipers will not work at all. Your visibility will be decreased tremendously and driving will be very difficult. In this case you should have your rear shield wiper motor replaced immediately.
Burnt Out Wiper Fuse
The wiper fuse is the weakest spot in the wiper circuit. It acts as a circuit breaker in the event that the wiper motor is overloaded. It does this by burning out. In this way it helps in protecting the wiper motor from damage. If your rear shield wiper is not working, it may be due to a burnt out wiper fuse. A common cause of wiper motor overloading is wet snow as explained above. If you notice that you have a burnt out wiper fuse, you should clear the obstacle from the rear shield before replacing the wiper fuse.
Loose Wiper Pivot Nuts
The wiper arms are joined to the wiper transmission by a pivot. This pivot is fastened by nuts so as to hold the wiper arm tightly. Sometimes the nut gets loose thus leading to rear shield wiper failure. The wiper motor may turn the pivot but the wiper arm does not move. In some instances the wiper may move a little but not enough to wipe the rear shield. You may solve this by simply tightening the pivot nuts and your Porsche rear shield wiper will be back on in no time.