Question about 2003 BMW 330

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330ci BMW hydraulic leak in automatic convertible top. Drivers side. Fluid leaked out and top no longer will go up or down.

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  • BMW Master
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Well, replace the offending unit, then bleed the air out of the system...Sometimes you have to remove components and invert them to get all of the air out.

Posted on Apr 28, 2010

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Posted on Jan 02, 2017

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Tried to lift the roof on convertable XK8 and hydraulic oil started to leak from the ceiling arounf the light cluster. How do I get at it to fix the leak/problem


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1996 audi cabriolet 2.8 V6 convertible top motor needs fluid how do i add the fluid to the convertible top motor?! and what type of fluid does it need?


Almost all power convertible tops are electric over hydraulic. The ecectric motor runs a hydraulic pump. The pump pushes fluid to the cylinders that work the top. Most are located behind the rear seat backrest. Either remove the rear backrest or access the motor/pump from the trunl. It will be shaped like a cylinder. At one is the electric motor, at the other end is the hydraulic reservoir. At the end of the reservoir is a rubber plug. With the top down, remove the plug and fill it with tran fluid till it over flows. replace the plug and cycle the top up and down as far as it will go. Repeat the process till it will take no more fluid. A turkey baster with a piece of vacuum line makes a good filler tool. With that said, you must find the leak. You may have a leaking pump, hydraulic line or cylinder. RNever replace one line. Do them all. Always replace cylinders in pairs.

Good luck, Karl at aoksales.com

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2002 BMW 325 will not drive in any gear


Hi well this could be a few things, is it auto? or manual? if it is manual then this could be the clutch is warn and needs replacing, or, you have a problem with the hydraulic clutch system ie a leak, or low fluid levels, to check low fluid levels, check the brake fluid reservoir as this also supply's the clutch top up if required, also check the prop shaft under the vehicle make sure the "doughnut" ( its a big rubber ring in the middle of the shaft) has not broken separating the 2 parts of the prop, to also check the clutch master and slave cylinder pump the clutch rapidly and see if it gets harder and then put in gear and see if it will drive , if it does then you might have air in the clutch system maybe a leaking cylinder, to check this, look under the dashboard where the clutch peddle is and see if it is damp on the carpet, this will be a leaking master cylinder and will need to be replaced, for the slave cylinder just check under the vehicle to see if either side of the gearbox is wet, this will be a leaking slave cylinder and will need to be replaced, ok that's for the manual type...for the auto type, you may have a torque converter fault it might be leaking and you have lost the oil in the transmission, there is no dip stick to see if it is low, any automatic transmission fault really should be checked by a BMW garage or main dealer..hope this helps please comment and vote thanks

Jan 14, 2011 | 2001 BMW 325

1 Answer

Hydraulic oil leaking from top of drivers side windshield in frame. Now top will not go up or down


in side the roof some hydraulic cylinders for operating your soft top now one cylinder leaking that's why oil leaking need to be replace new hydraulic cylinder is this information helped you?

May 15, 2010 | 1995 Mercedes-Benz SL-Class

1 Answer

Convertible top will no longer go up or down but the light stays on, so I think its the motor but am praying its less expensive than that


The most common reason for this is low hydraulic fluid. The noise is probably the pump running while empty. When fluid id present it dampens that noise. Behind the rear seat is the combination motor/pump/reservoir. With the top in the DOWN position, fill the reservoir with ATF and cycle the system a few times as far as it will go. Repeat until the reservoir will take no more fluid. If that works, it is only a patch fix. You must now inspect the lines, motor and cylinders for leaks. The fluid does not evaporate. If it is low, you have a leak. Karl at topgunwon.com

Nov 11, 2009 | 1999 BMW 328 Series

1 Answer

Green hydralic liquid coming from convertible top saab 2004 9-3


You are probably leaking hydraulic (ATF) fluid.
Check the lines and cylinders for leaks. Replace any leaking lines or cylinders. Always replace them in pairs.
When the leak is fixed...
Behind the rear seat is the motor/pump/reservoir.
With the top down, fill the reservoir with ATF.
Cycle the system a few times.
Repeat till the reservoir will accept no more fluid.
You can change it to a manual top by removing the bolt at the top of the cylinders and lowering the both shafts down into the cylinders.

Karl at topgunwon.com

Jun 22, 2009 | 2001 Saab 9-3

1 Answer

Convertible top


they are runon hydraulics you may have a leak in the hose but yes u can disconnect the motor and raise and lower it maunally

Jul 14, 2008 | 1998 BMW Z3 Roadster

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