Having a functioning windshield washer is one of the things you shouldn’t do without. First of all, we think of driving comfort, but it is necessary to know that this also implies your safety at the wheel because of the importance of visibility when driving your Mercury Grand Marquis.
In this article we will clarify step by step how to recognize the fault and solve it in order to have an effective windscreen washer.
Identify the failure of the windscreen washer of your Mercury Grand Marquis:
First thing to watch out for before handling, have you filled up your cleaning fluid? If so, let’s see what motives prevent your equipment from working properly.


Causes for wipers that no longer work on your Mercury Grand Marquis

Very often, your equipment is blocked by accumulated dirt or limescale. This is the main cause that may prevent your equipment from working. To stop this, try to unclog your sprinklers. These holes allow the solution to be propelled onto your Mercury Grand Marquis’s windshield. It is very likely that they are clogged, by accumulation of limestone, or various types of dirt. To do this, you can get started with by trying to blow, yourself or with some powerful equipment, such as a bicycle pump or ideally the tire inflator at your gas station.

How to fix wipers that no longer work

If nothing can be done, try to get yourself a thin, durable thing, such as a paper clip, that will enable you to access the interior without losing a piece. We advise that you also employ a mixture of vinegar and hot water to optimize your results.
Repeat the test, if it still doesn’t work, maybe it’s blocked at a deeper place, at the connection pipe. This is the link between the pump and the nozzle in your Mercury Grand Marquis.
To reach it, you will have to open your cover:
You should find the two hoses specific to each nozzle. Try to tidy them and obviously make sure they are properly connected. Use the same cleaning procedures explained above. When they are cleaned, you should be capable to circulate water through them without any problems. Then plug them back in correctly, and repeat the test on your Mercury Grand Marquis. If it still doesn’t work, you now understand that it doesn’t come from the sprinklers or the pipes.
After that, you should then check the pump. It is the one who starts the product launch.
You will find it near the cleaning fluid reservoir under your Mercury Grand Marquis’s hood.
First test to ascertain if it works, when you turn on the washer, you are meant to hear a noise when the pump is activated. In the absence of noise, this suggests that that it does not work. It will then have to be replaced.
It is a very basic thing to do . First, do away with the two screws that enable it to be fixed on your Mercury Grand Marquis.
Then, you must find two power wires. They are mainly black and red. They have to be disconnected, but be careful, they must be reconnected in the right direction afterwards, or you would create a short circuit on your Mercury Grand Marquis. A little tip to bear in mind: the red wire is a symbol of the + terminal. For example, put a piece of red tape on it to make sure you can find it. Do the same with the black tape on the bollard – . Thanks to this, you should be able to reconnect the wire of the right color without any problem later on.
Once completed, you can dispose of the old pump and insert the new pump on your Mercury Grand Marquis. Reconnect the cables correctly using the tip, then just screw the two retaining screws back on.
Now run a test again.
Everything should be back to normal by now.

To find more tips on the Mercury Grand Marquis, take a look at the Mercury Grand Marquis category.