Having trouble with the climate control system on my '87 560SEL, All pushbutton settings result in the exact same airflow pattern. 90% of all airflow is directed to the windshield and side window outlets, 10% to the foot wells. Whether air conditioning or heat the air flow pattern never changes. Anyone have any idea what the heck is going on here?

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jcciem
'94 SL5000 60,000
'91 350SDL 545,000
'91 350SD 197,000
'00 E55 AMG 77,000