Forrest Gump 9

Well, it's a palmy 55 degree this morning so I turn the heater on for the first time this year. Suprise, only cold air coming out. I even crank all four zones to 90 and still only cold air coming out.

Anyone had this problem? Is this something I can tinker with or I have to visit the dealer? Thanks

CLKCLK

Do you have KC on your car?

Forrest Gump 9

Yes, does that affect the heater?

Black_55AMG

I have the same problem. My MB tech friend said he will fix it for me.

Forrest Gump 9

Can you ask him what's the fault?

berti_00

its your Heater Control Valve buddy... happened to me i changed it my self and back to bushiness...

https://mbworld.org/forums/e-class-w...rol-valve.html

good luck