Open full view…

Air conditioning air distribution

[email protected]
Sat, 22 Apr 2023 20:01:14 GMT

I have a 1997 SL320 - no matter what button I push I can't get air to come out of the two center vents in the middle of the dashboard. This has also stumped "A Better Wrench" a top rated shop in Chapel Hill,, N.C. that specializes in Mercedes. I would appreciate any suggestions. Thank You [email protected]

Tue, 25 Apr 2023 15:38:03 GMT

Does your owners manual shed any light on A/C airflow?

Wed, 26 Apr 2023 19:18:37 GMT

Air distribution is controlled by a complicated system of vacuum valves and actuators. I would look first for a large vacuum leak such as a hose displaced or rotted out. If DIY, and all easily seen underhood hose connections are secure, it will then require removing the underdash panel and some gymnastics to inspect the hases and valves in the dash area. A pro would use a smoke generator to zero in on the problrem. Good luck and please let us know the resolution.

Alex Admin
Wed, 21 Jun 2023 00:34:50 GMT

In some older M-B models the center vents provide hot air only and no A/C air comes out of them.