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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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Mercedes benz Sl600: I have a 1997 Mercedes sl600. The center

Customer Question

I have a 1997 Mercedes sl600. The center vents and floor vents don't work. Side and defrost work fine. Air conditioner and heat work. I've replaced the vacuum distribution block under the hood, the climate control unit(it failed a while back) and the center vent nozzle. What else can I look for? Climate control diagnostic codes only go up to 54 when I access them. They are supposed to go to 64. Thanks.
Submitted: 7 months ago.
Category: Mercedes
Expert:  Lou P. master tech replied 7 months ago.
Hello Dave, you say the side and defrost work fine, does that mean the air is constantly coming out of the side vents and the defrost?