Hey everyone.. I just got and installed my blowermotor/regulator today and its working great. The cool air comes out of all 4 vents just fine but when I switch it to heat, it is only coming out of the side vents (not the central vents)...??? Does anyone know whats wrong? Oh also the heating comes out of the front near the front window as well (for the antifog during rain/cold days)...

Check the manual. Those red and blue buttons on the center vent might have something to do with it. Meaning I read the manual but I don't remember what it said.

Sixto
95 S420
91 300SE
87 300SDL
83 300SD

Hehe. I tried every button but I'll look into it.

Thanks. I have to find my manual though.

Heat never comes out of the center vents, only cool air.

No floor air is a bad vac servo, can't tell you where it is, though.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!

I am pretty sure heat should come out of central vents. I mean thats where the majority of the heat comes out of but for some reason it isn't when I try in my car...

I don't think so. I have had 4 MB and none of them have had heat in the central vents. That's the way they are built.

One of the things MB 'fixed' with the W140.

Sixto
95 S420
91 300SE
87 300SDL
83 300SD

haha.. I knew it. I was like what are they talking about. It was a while since I had heat running so I forgot but was 99% sure it used to blow very hot air during the cold times

Ill check the manual and see..thanks sixto.

Yeah I think you have to hit the red button for heat to come out and the blue button for cold to come out. It's weird I know.

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1985 500SEL 124k miles
2001 Honda Civic EX