Rear screen misting up on the inside.

[S80T60James]

For the last three days each time I've got in the car to start it I've found the rear screen is all misted up in the inside. I clear it with the rear windscreen heater but can I do anything to avoid it happening?

[Brendan W]

Emmm yes and no. The temperature of your back window is falling below the dew point of the air inside the car , hence condensation. When you leave the car the air inside is generally warmer and has absorbed ' excess' water which drops out when its cools below it's dew point.
There are many ways to stop it of varying degrees of impracticality.All have the same general thrust - keep the window temp up or the cabin air dew point ( wetness) down.
Keep it clean - dirt/dust nucleates condensation.
Check the car for leaks , wet carpet, coolant smell etc.
Don't leave wet gear in the car.
Empty the hot air as you park up - door open for a bit.
Leave a window/ sunroof cracked open.
Park the back up against a poorly insulated wall of a house ( keeps frost away as well)
Put a blanket on it.
Stick in in the garage.
Park back to the sun - front will probably mist up instead.
Run a dehumidifier in the car.
Wait 'til summer - my favourite , works every year.
Buy a soft top.

Generally this only lasts a few days when we have high humidity and low overnight temperatures. You won't cure it - Mother Nature wins everytime.

[S80T60James]

Cheers for that. I've checked for leaks and thankfully found none! Will leave doors open for a little while longer after journeys.

[chiptivo]

dead body in the boot?

no seriously, damp stuff in the boot?

[S80T60James]

Dead body?! My wife does annoy me from time to time but that would be a little drastic!

[xc70jason]

Hi,have you got climate control?That'll clear it on a nice little run.Regard's Jason