Hit up Walmart, Walgreens, etc and get a bottle of Isopropyl Alcohol in the highest percentage you can. Dump it in and it'll defrost on its own.

 

I'd love to add Isopropyl but its corrosive to my Benz aluminum windshield wiper lines.

 

Mine has been frozen the last couple days too. Most likely your fluid has lost its potency over time.

Step 1: Thaw it out, as in park it in the sun (even at 0 F. the sun will probably do the job) or get it into a garage. My unheated garage warms up into the 20s with a couple warm vehicles parked inside. Unless you're running straight water in your w/s/w, getting even close to 32F should get things thawed.

Step 2: I'm with festerw above. However, alcohol will keep things from freezing, but won't thaw anything until it gets into the lines.

I can't imagine its going to corrode your lines. W/s/w fluid has alcohol in it normally. I'd be more concerned about it affecting the paint. Fortunately alcohol evaporates quickly.

 

Women's hair dryer on the tank and lines will do the job quickly.

 

Mine was frozen this morning. If you're driving, the heat from the engine will unfreeze the little hoses (and the nozzles) if not right away then after you stop.
I'm guilty of being lazy and just adding water in the summertime, usually I add a cheap version of window cleaner with the water.

Mine started working within 20 minutes after I started the car today.

 

Funny thing. Mine froze up on Sunday. I first noticed the rear w/s/w wasn't working, then discovered the front wasn't either. After being parked in the sun while I was in church, I tried the rear again and the fronts dribbled a little spray, even though I was pressing the rear. Once it was thoroughly thawed it worked fine. I never put water in mine; usually the dealer tops it off when they do an oil change. Maybe they aren't using the best stuff?

 

No my Benz uses aluminum lines hence the corrosion, my Jeep uses plastic lines.
I may dump a bottle of alcohol in the Jeep tho just for good measure

 

Update guys:

We got nice 50 degrees weather yesterday and It worked fine this morning. Now I am just using my wiper fluid as much as possible to empty what the dealer put in and replace it with the good stuff.

Thanks for everyone's input.

 

Also, Methyl hydrate works well, and is cheaper than Isopropyl alcohol.
It is the same ingredient used in the winter windshield washer fluid you buy in the stores, so it won't hurt the vehicle.
Vodka works in a pinch....>

 

When I lived in CA, they weren't allowed to sell windshield washer fluid with anti-freeze--it's the VOCs, you know. And how many middle-aged folks looked at what they had, exclaimed that their fluid protected to +32, and isn't that enough? Yeah, this engineer said, sure, just like tap water---Now, here in WA state, no problem getting -40 washer fluid! Which I will use year around!

 

VOCs in w/s/w fluid? What if you live in the mountains? It must get cold in some places in California. Of was that just a city or county ordinance?
Then again my first car (1960 Ford) wasn't even equipped with a w/s/washer; and yes, it was a problem in winter driving. If I ran the wipers long enough I could usually rub most of the scum off. Either that or I'd get out and throw some snow on the windshield. Having a w/s/w is much handier.

 

This stuff is pretty popular here:
Reflex -49°C Windshield Washer Fluid, 3.78 L | Canadian Tire

Doesn't freeze till -56F. Any colder than that, we stay home anyway....

 

Yup That phucker that's the good stuff!