Please fill out the following to ask a question. MAKE:BMW MODEL:323 ci YEAR:98 MILES:92000 ENGINE:2.5 DESCRIBE ISSUE....When heater is on floor and dash vents work great, if you select dash vents you hear a door close and only get cold air. The climate control has 3 buttons that you can select 1, 2, or all. Like I said it works great until you select the dash vents. Any ideas.