Incorrect Air Delivery and/or Temperature From Climate Control System on Mercedes-Benz C43 AMG

The vacuum manifold for the climate control actuator may develop a leak, This can cause poor or no operation of the air delivery and temperature control flaps.

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Average mileage: 20,000 (20,000–20,000)
3 model years affected: 1998, 1999, 2000
4 people reported this problem
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1999 Mercedes-Benz C43 AMG 20,000 mi,
No AC air coming out of vent. Repaired under warranty. Dealer fixed vacuum hose.