My 2005 Prius windshield fogs when it rains and it won't stay clear no matter what I do

Asked by Jun 01, 2017 at 08:54 PM about the 2005 Toyota Prius

Question type: General

My windshield fogs and streaks when it rains. we have tried new wipers and
cleaning the glass and using the defrost with the air on. nothing helps. It is hard
to see.

4 Answers


Is the condensation inside the car or outside? Inside, there is too much humidity in the car. I suspect you have a leak somewhere and the carpet and or floor mats are wet.

1 of 1 people found this helpful.

I use the air conditioning setting all year long. So anytime the outside temperature is above 35°F the a/c compressor is running. This dehumidifies the air coming into the passenger's compartment and prevents window fogging. When using the defroster to defog the windshield the temperature setting needs to be on hot. Are you losing coolant? If so, I'd suspect a leaking heater core. As far as wipers go, get original equipment ones from the dealer. Yes, they're more expensive but they're also much better and last a lot longer. HTH. -Jim


set to lever to fresh air from the outside on the outside try cleaning well with rubbing alcohol


Crack a window.

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