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I'm new to the forum. I have recently purchased a 2004 Z4 2.5i model. The top is non-functional. The buttons near the ashtray appear to do nothing. The weird thing, if the top is dropped manually, the top light flashes red and the battery drains to a point where it will not crank the car within 30 minutes. Once the top is placed back in the closed position, the light will eventually quit flashing and the car battery works normally. The electric release for the top doesn't function. Does anyone know what causes the battery drain when the top is open? Does it sound like the hydraulic motor and pump need to be replaced as well as the electric lock motor? Do the buttons sound like they need to be replaced? The car has been sitting outside under an oak tree for the past few years. The top condition overall is acceptable along with the interior liner. The previous owner just said the hydraulic motor had failed. Any help in troubleshooting or where to start would be appreciated.
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