No heat issue

[7msupradude]

Today I washed my car, and did not realize until i finished that I had left my climate control on 78 with the engine off for a good 45 minutes (had the key in the on position to stop the beeping with the doors open and have music..) - not sure if this is the culprit, but I now have no heat. I have checked all of my vacuum lines, and all are connected, no visible leaks.

Anybody have any knowlege on what might be wrong?- or if I fried my heater core, maybe even blew a fuse by leaving the climate on...

Thank you.

 

[Kckazdude]

There have been times when I have had to cycle mine all the way through the temps to get heat going again. Turn it all the way up to 85° then go all the way down to 65°. Then set it to desired temp and see if that works. Fan speed and zone selection dont seem to affect it.

 

[Dunckel]

You will know your heater core crapped out if you have coolant leaking onto your passenger side floorboard, or you get an oily film on the inside of your windows.

 

[7msupradude]

Thanks for the input. But after a little more inspection, my heater core is fine, but my vsv is toast. So ill probably bypass it until I can get a new one. Has anyone used the mercedes vsv?

 

[jetjock]

http://tinyurl.com/4y2sm7

The truth is any 12 volt three-way solenoid will work.

I won't bore you with the technical details and I understand it wasn't intentional but it's not a good thing to have the EFI system powered up for a long time without the engine running. ACC is fine but KOEO is not.